Company lists · Data refreshed September 2026
Top 25 Environmental research and advocacy organizations based in Washington, United States
RevenueBase identified 118 company matches for environmental research and advocacy organizations associated with Washington, United States as of September 2026 and tracks 5,244 professional contacts across them, including 1,808 with verified work emails. Across the United States, Washington is the largest hub for this category.
This list covers company matches for environmental research and advocacy organizations associated with Washington, United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 19, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest environmental research and advocacy organizations based in Washington, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,359 contacts → | ||||
Exact match “WRI works to improve people’s lives, protect and restore nature and stabilize the climate.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 2 | 366 contacts → | ||||
Exact match “Since our founding during the campaign to pass the landmark Clean Water Act in 1972, Clean Water Action has worked to win strong health and environmental protections by bringing…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 3 | 218 contacts → | ||||
Exact match “LCV believes our earth is worth fighting for because everyone has a right to clean air, water, and a safe, healthy community.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 4 | 202 contacts → | ||||
Exact match “Defenders of Wildlife is dedicated to the protection of all native animals and plants in their natural communities.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 5 | 199 contacts → | ||||
Exact match “The Wilderness Society (TWS) is the leading conservation organization working to protect America’s wild places and public lands for the health of local communities, wildlife, and…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 6 | 196 contacts → | ||||
Exact match “The International Council on Clean Transportation is an independent nonprofit organization founded to provide first-rate, unbiased research and technical and scientific analysis…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 7 | 147 contacts → | ||||
Exact match “American Rivers protects wild rivers, restores damaged rivers, and conserves clean water for people and nature.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 8 | 144 contacts → | ||||
Exact match “EARTHDAY.ORG’s mission is to diversify, educate and activate the environmental movement worldwide.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 9 | 136 contacts → | ||||
Exact match “Founded in 1875, American Forests is the oldest national nonprofit conservation organization in the U.S.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 10 | 135 contacts → | ||||
Exact match “Resources for the Future improves environmental, energy, and natural resource decisions through impartial economic research and policy engagement.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 11 | 126 contacts → | ||||
Exact match “EARTHWORKS is a nonprofit organization dedicated to protecting communities and the environment from the impacts of irresponsible mineral and energy development while seeking…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 12 | 120 contacts → | ||||
Exact match “The Environmental Working Group is a non-profit, non-partisan organization dedicated to protecting human health and the environment.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 13 | 102 contacts → | ||||
Exact match “The Environmental Law Institute (ELI) makes law work for people, places, and the planet.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 14 | 97 contacts → | ||||
Exact match “Founded in 1971, Greenpeace began when a small group of activists sailed from Vancouver to protest nuclear testing at Amchitka, Alaska.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 15 | 82 contacts → | ||||
Exact match “EarthRights International is a nongovernmental, nonprofit organization that combines the power of law and the power of people in defense of earth rights.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 16 | 76 contacts → | ||||
Exact match “Forest Trends works to conserve forests and other ecosystems through the creation and wide adoption of a range of environmental finance, market, and other payment and incentive…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 17 | 74 contacts → | ||||
Exact match “The Center for International Environmental Law (CIEL) uses the power of the law to protect the environment, promote human health, and ensure a just and sustainable society.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 18 | 53 contacts → | ||||
Exact match “ecoAmerica grows the base of popular support for climate solutions in America with research-driven marketing, partnerships, and national programs that connect with Americans' core…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 19 | 51 contacts → | ||||
Exact match “Friends of the Earth is a bold and fearless voice for justice and the planet.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 20 | 47 contacts → | ||||
Exact match “Oil Change International is a research, communication, and advocacy organization focused on exposing the true costs of fossil fuels and facilitating the coming transition towards…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 21 | 46 contacts → | ||||
Exact match “The Institute for Local Self-Reliance (ILSR) is a nonprofit research and educational organization that provides technical assistance and information on sustainable development…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 22 | 44 contacts → | ||||
Exact match “Mighty Earth is a global environmental organization that works to make a lasting difference for the planet and its people with a focus on forests, sustainable agriculture, and…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 23 | 40 contacts → | ||||
Exact match “EIP combines research, reporting, and media outreach to spotlight illegal pollution, expose political intimidation of enforcement staff, and encourage federal and state agencies…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 24 | 39 contacts → | ||||
Exact match “Planet Forward is a project of The George Washington University School of Media & Public Affairs.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 25 | 39 contacts → | ||||
Exact match “In the fight to save endangered animals and the planet, we need every smart voice and solution at the table.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “environmental research and advocacy organizations”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 118 environmental research and advocacy organizations based in Washington, United States
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Environmental research and advocacy organizations based in Washington, United States at a glance
As of Sep 19, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than for Washington, so it is reported there. Company counts and contact totals on this page are exact for Washington, over 118 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with Washington, United States whose business descriptions match “environmental research and advocacy organizations” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 1,808 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 19, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Environmental research and advocacy organizations by metro in the United States
- Environmental research and advocacy organizations in New York67
- Environmental research and advocacy organizations in San Francisco42
- Environmental research and advocacy organizations in Seattle39
- Environmental research and advocacy organizations in Los Angeles37
- Environmental research and advocacy organizations in Portland35
- Environmental research and advocacy organizations in Boston28
- Environmental research and advocacy organizations in Denver27
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “environmental research and advocacy organizations”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many environmental research and advocacy organizations are there based in Washington, United States?
RevenueBase identified 118 company matches for environmental research and advocacy organizations associated with Washington, United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
World Resources Institute tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city in the United States has the most environmental research and advocacy organizations?
Washington leads the United States with 118 company records, followed by New York (67) and San Francisco (42).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,808 professional contacts with verified work emails tracked across these 118 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 2026.
Ready to reach these companies? Verified emails and direct dials for all 118 environmental research and advocacy organizations based in Washington, United States. Start with a free account, no credit card.
Download this list →Related lists
Environmental research and advocacy organizations by geography
- Environmental research and advocacy organizations based in Mumbai, India
- Environmental research and advocacy organizations based in New Delhi, India
- Environmental research and advocacy organizations based in Boston, United States
- Environmental research and advocacy organizations based in Denver, United States
- Environmental research and advocacy organizations based in Los Angeles, United States
- Environmental research and advocacy organizations based in New York, United States
- Environmental research and advocacy organizations based in Portland, United States
- Environmental research and advocacy organizations based in San Francisco, United States
- Environmental research and advocacy organizations based in Seattle, United States
- Environmental research and advocacy organizations based in Argentina
- Environmental research and advocacy organizations based in Australia
- Environmental research and advocacy organizations based in Belgium
About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Environmental research and advocacy organizations based in Mumbai, India
- Environmental research and advocacy organizations based in New Delhi, India
- Environmental research and advocacy organizations based in Boston, United States
- Environmental research and advocacy organizations based in Denver, United States
- Environmental research and advocacy organizations based in Los Angeles, United States
- Environmental research and advocacy organizations based in New York, United States
Company intelligence · public preview
Top 25 environmental research and advocacy organizations based in Washington, United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 118 matching company records for environmental research and advocacy organizations based in Washington, United States, with 5,244 tracked contacts and 1,808 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 19, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 environmental research and advocacy organizations based in Washington, United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | World Resources Institutewri.org HQ: Washington, DC, United StatesReported employees: 1,001-5,000 | Washington, DC, United States | 1,001-5,000 | Exact match | 1,359 contacts → |
“WRI works to improve people’s lives, protect and restore nature and stabilize the climate.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Clean Water Actioncleanwater.org HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 366 contacts → |
“Since our founding during the campaign to pass the landmark Clean Water Act in 1972, Clean Water Action has worked to win strong health and environmental protections by bringing…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 218 contacts → |
“LCV believes our earth is worth fighting for because everyone has a right to clean air, water, and a safe, healthy community.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Defenders Of Wildlifedefenders.orgHQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 202 contacts → |
“Defenders of Wildlife is dedicated to the protection of all native animals and plants in their natural communities.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | The Wilderness Societywilderness.org HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 199 contacts → |
“The Wilderness Society (TWS) is the leading conservation organization working to protect America’s wild places and public lands for the health of local communities, wildlife, and…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 196 contacts → |
“The International Council on Clean Transportation is an independent nonprofit organization founded to provide first-rate, unbiased research and technical and scientific analysis…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  American Riversamericanrivers.orgHQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 147 contacts → |
“American Rivers protects wild rivers, restores damaged rivers, and conserves clean water for people and nature.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | earthday.orgearthday.org HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 144 contacts → |
“EARTHDAY.ORG’s mission is to diversify, educate and activate the environmental movement worldwide.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  American Forestsamericanforests.orgHQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 136 contacts → |
“Founded in 1875, American Forests is the oldest national nonprofit conservation organization in the U.S.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Resources For The Futurerff.org HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 135 contacts → |
“Resources for the Future improves environmental, energy, and natural resource decisions through impartial economic research and policy engagement.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Earthworksearthworks.org HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 126 contacts → |
“EARTHWORKS is a nonprofit organization dedicated to protecting communities and the environment from the impacts of irresponsible mineral and energy development while seeking…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Environmental Working Groupewg.org HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 120 contacts → |
“The Environmental Working Group is a non-profit, non-partisan organization dedicated to protecting human health and the environment.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Environmental LAW Instituteeli.org HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 102 contacts → |
“The Environmental Law Institute (ELI) makes law work for people, places, and the planet.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Greenpeace USAgreenpeace.org HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 97 contacts → |
“Founded in 1971, Greenpeace began when a small group of activists sailed from Vancouver to protest nuclear testing at Amchitka, Alaska.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Earthrights Internationalearthrights.org HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 82 contacts → |
“EarthRights International is a nongovernmental, nonprofit organization that combines the power of law and the power of people in defense of earth rights.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Forest Trends Associationforest-trends.org HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 76 contacts → |
“Forest Trends works to conserve forests and other ecosystems through the creation and wide adoption of a range of environmental finance, market, and other payment and incentive…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 74 contacts → |
“The Center for International Environmental Law (CIEL) uses the power of the law to protect the environment, promote human health, and ensure a just and sustainable society.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Ecoamericaecoamerica.org HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 53 contacts → |
“ecoAmerica grows the base of popular support for climate solutions in America with research-driven marketing, partnerships, and national programs that connect with Americans' core…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Friends Of The Earth U.Sfoe.org HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 51 contacts → |
“Friends of the Earth is a bold and fearless voice for justice and the planet.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | OIL Change Internationaloilchange.org HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 47 contacts → |
“Oil Change International is a research, communication, and advocacy organization focused on exposing the true costs of fossil fuels and facilitating the coming transition towards…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 46 contacts → |
“The Institute for Local Self-Reliance (ILSR) is a nonprofit research and educational organization that provides technical assistance and information on sustainable development…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Mighty Earthmightyearth.org HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 44 contacts → |
“Mighty Earth is a global environmental organization that works to make a lasting difference for the planet and its people with a focus on forests, sustainable agriculture, and…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Environmental Integrity Projectenvironmentalintegrity.org HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 40 contacts → |
“EIP combines research, reporting, and media outreach to spotlight illegal pollution, expose political intimidation of enforcement staff, and encourage federal and state agencies…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Planet Forwardplanetforward.org HQ: Washington, DC, United StatesReported employees: Not recorded | Washington, DC, United States | Not recorded | Exact match | 39 contacts → |
“Planet Forward is a project of The George Washington University School of Media & Public Affairs.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Conservation Nationconservationnation.org HQ: Washington, DC, United StatesReported employees: Not recorded | Washington, DC, United States | Not recorded | Exact match | 39 contacts → |
“In the fight to save endangered animals and the planet, we need every smart voice and solution at the table.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 118 company matches
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Environmental research and advocacy organizations: dataset insights
September 19, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
118 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole United States list rather than for Washington, so it is reported there. Company counts and contact totals on this page are exact for Washington, over 118 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 19, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Environmental research and advocacy organizations by metro in the United States
- Environmental research and advocacy organizations in New York67
- Environmental research and advocacy organizations in San Francisco42
- Environmental research and advocacy organizations in Seattle39
- Environmental research and advocacy organizations in Los Angeles37
- Environmental research and advocacy organizations in Portland35
- Environmental research and advocacy organizations in Boston28
- Environmental research and advocacy organizations in Denver27
Questions about this company list
What does Exact match mean for environmental research and advocacy organizations?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many environmental research and advocacy organizations did RevenueBase find based in Washington, United States?
The saved snapshot records 118 matching company records, 5,244 tracked contacts and 1,808 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 19, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Environmental research and advocacy organizations by geography
- Environmental research and advocacy organizations based in Mumbai, India
- Environmental research and advocacy organizations based in New Delhi, India
- Environmental research and advocacy organizations based in Boston, United States
- Environmental research and advocacy organizations based in Denver, United States
- Environmental research and advocacy organizations based in Los Angeles, United States
- Environmental research and advocacy organizations based in New York, United States
- Environmental research and advocacy organizations based in Portland, United States
- Environmental research and advocacy organizations based in San Francisco, United States
- Environmental research and advocacy organizations based in Seattle, United States
- Environmental research and advocacy organizations based in Argentina
- Environmental research and advocacy organizations based in Australia
- Environmental research and advocacy organizations based in Belgium
Cite this list
RevenueBase Data Team. Top 25 environmental research and advocacy organizations based in Washington, United States. Snapshot: September 19, 2026. https://revenuebase.ai/companies/environmental-research-and-advocacy-organizations/united-states/washington.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Environmental research and advocacy organizations based in Mumbai, India
- Environmental research and advocacy organizations based in New Delhi, India
- Environmental research and advocacy organizations based in Boston, United States
- Environmental research and advocacy organizations based in Denver, United States
- Environmental research and advocacy organizations based in Los Angeles, United States
- Environmental research and advocacy organizations based in New York, United States
Company intelligence · public preview
Top 25 environmental research and advocacy organizations based in Washington, United States
RevenueBase records 118 matching company records for environmental research and advocacy organizations based in Washington, United States, with 5,244 tracked contacts and 1,808 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 19, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 environmental research and advocacy organizations based in Washington, United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | World Resources Institutewri.org HQ: Washington, DC, United StatesReported employees: 1,001-5,000 | Washington, DC, United States | 1,001-5,000 | Exact match | 1,359 contacts → |
“WRI works to improve people’s lives, protect and restore nature and stabilize the climate.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Clean Water Actioncleanwater.org HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 366 contacts → |
“Since our founding during the campaign to pass the landmark Clean Water Act in 1972, Clean Water Action has worked to win strong health and environmental protections by bringing…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 218 contacts → |
“LCV believes our earth is worth fighting for because everyone has a right to clean air, water, and a safe, healthy community.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Defenders Of Wildlifedefenders.org HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 202 contacts → |
“Defenders of Wildlife is dedicated to the protection of all native animals and plants in their natural communities.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | The Wilderness Societywilderness.org HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 199 contacts → |
“The Wilderness Society (TWS) is the leading conservation organization working to protect America’s wild places and public lands for the health of local communities, wildlife, and…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 196 contacts → |
“The International Council on Clean Transportation is an independent nonprofit organization founded to provide first-rate, unbiased research and technical and scientific analysis…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | American Riversamericanrivers.org HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 147 contacts → |
“American Rivers protects wild rivers, restores damaged rivers, and conserves clean water for people and nature.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | earthday.orgearthday.org HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 144 contacts → |
“EARTHDAY.ORG’s mission is to diversify, educate and activate the environmental movement worldwide.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | American Forestsamericanforests.org HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 136 contacts → |
“Founded in 1875, American Forests is the oldest national nonprofit conservation organization in the U.S.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Resources For The Futurerff.org HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 135 contacts → |
“Resources for the Future improves environmental, energy, and natural resource decisions through impartial economic research and policy engagement.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Earthworksearthworks.org HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 126 contacts → |
“EARTHWORKS is a nonprofit organization dedicated to protecting communities and the environment from the impacts of irresponsible mineral and energy development while seeking…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Environmental Working Groupewg.org HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 120 contacts → |
“The Environmental Working Group is a non-profit, non-partisan organization dedicated to protecting human health and the environment.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Environmental LAW Instituteeli.org HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 102 contacts → |
“The Environmental Law Institute (ELI) makes law work for people, places, and the planet.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Greenpeace USAgreenpeace.org HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 97 contacts → |
“Founded in 1971, Greenpeace began when a small group of activists sailed from Vancouver to protest nuclear testing at Amchitka, Alaska.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Earthrights Internationalearthrights.org HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 82 contacts → |
“EarthRights International is a nongovernmental, nonprofit organization that combines the power of law and the power of people in defense of earth rights.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Forest Trends Associationforest-trends.org HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 76 contacts → |
“Forest Trends works to conserve forests and other ecosystems through the creation and wide adoption of a range of environmental finance, market, and other payment and incentive…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 74 contacts → |
“The Center for International Environmental Law (CIEL) uses the power of the law to protect the environment, promote human health, and ensure a just and sustainable society.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Ecoamericaecoamerica.org HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 53 contacts → |
“ecoAmerica grows the base of popular support for climate solutions in America with research-driven marketing, partnerships, and national programs that connect with Americans' core…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Friends Of The Earth U.Sfoe.org HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 51 contacts → |
“Friends of the Earth is a bold and fearless voice for justice and the planet.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | OIL Change Internationaloilchange.org HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 47 contacts → |
“Oil Change International is a research, communication, and advocacy organization focused on exposing the true costs of fossil fuels and facilitating the coming transition towards…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 46 contacts → |
“The Institute for Local Self-Reliance (ILSR) is a nonprofit research and educational organization that provides technical assistance and information on sustainable development…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Mighty Earthmightyearth.org HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 44 contacts → |
“Mighty Earth is a global environmental organization that works to make a lasting difference for the planet and its people with a focus on forests, sustainable agriculture, and…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Environmental Integrity Projectenvironmentalintegrity.org HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 40 contacts → |
“EIP combines research, reporting, and media outreach to spotlight illegal pollution, expose political intimidation of enforcement staff, and encourage federal and state agencies…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Planet Forwardplanetforward.org HQ: Washington, DC, United StatesReported employees: Not recorded | Washington, DC, United States | Not recorded | Exact match | 39 contacts → |
“Planet Forward is a project of The George Washington University School of Media & Public Affairs.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Conservation Nationconservationnation.org HQ: Washington, DC, United StatesReported employees: Not recorded | Washington, DC, United States | Not recorded | Exact match | 39 contacts → |
“In the fight to save endangered animals and the planet, we need every smart voice and solution at the table.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 118 company matches
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Environmental research and advocacy organizations: dataset insights
September 19, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
118 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole United States list rather than for Washington, so it is reported there. Company counts and contact totals on this page are exact for Washington, over 118 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 19, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Environmental research and advocacy organizations by metro in the United States
- Environmental research and advocacy organizations in New York67
- Environmental research and advocacy organizations in San Francisco42
- Environmental research and advocacy organizations in Seattle39
- Environmental research and advocacy organizations in Los Angeles37
- Environmental research and advocacy organizations in Portland35
- Environmental research and advocacy organizations in Boston28
- Environmental research and advocacy organizations in Denver27
Questions about this company list
What does Exact match mean for environmental research and advocacy organizations?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many environmental research and advocacy organizations did RevenueBase find based in Washington, United States?
The saved snapshot records 118 matching company records, 5,244 tracked contacts and 1,808 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 19, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Environmental research and advocacy organizations by geography
- Environmental research and advocacy organizations based in Mumbai, India
- Environmental research and advocacy organizations based in New Delhi, India
- Environmental research and advocacy organizations based in Boston, United States
- Environmental research and advocacy organizations based in Denver, United States
- Environmental research and advocacy organizations based in Los Angeles, United States
- Environmental research and advocacy organizations based in New York, United States
- Environmental research and advocacy organizations based in Portland, United States
- Environmental research and advocacy organizations based in San Francisco, United States
- Environmental research and advocacy organizations based in Seattle, United States
- Environmental research and advocacy organizations based in Argentina
- Environmental research and advocacy organizations based in Australia
- Environmental research and advocacy organizations based in Belgium
Cite this list
RevenueBase Data Team. Top 25 environmental research and advocacy organizations based in Washington, United States. Snapshot: September 19, 2026. https://revenuebase.ai/companies/environmental-research-and-advocacy-organizations/united-states/washington.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
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- Environmental research and advocacy organizations based in Mumbai, India
- Environmental research and advocacy organizations based in New Delhi, India
- Environmental research and advocacy organizations based in Boston, United States
- Environmental research and advocacy organizations based in Denver, United States
- Environmental research and advocacy organizations based in Los Angeles, United States
- Environmental research and advocacy organizations based in New York, United States