Company lists · Data refreshed November 2026
Top 20 Environmental science nonprofits based in Seattle, United States
RevenueBase identified 35 company matches for environmental science nonprofits associated with Seattle, United States as of November 2026 and tracks 1,398 professional contacts across them, including 372 with verified work emails. Across the United States, Washington is the largest hub for this category (87 companies); Seattle has 35.
This list covers company matches for environmental science nonprofits associated with Seattle, 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 November 6, 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 20 largest environmental science nonprofits based in Seattle, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 96 contacts → | ||||
Exact match “EarthCorps cultivates leaders and community partnerships to advance environmental justice.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 57 contacts → | ||||
Exact match “Washington Conservation Action’s mission is to strengthen our democracy, elect champions, and mobilize the public for environmental progress and justice in the Pacific Northwest.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 27 contacts → | ||||
Exact match “Mission: ECOSS is devoted to promoting environmental justice and sustainability in an effort to build immigrant and refugee communities that can shape their environmental futures.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 24 contacts → | ||||
Exact match “Toxic-Free Future is a national leader in environmental health research and advocacy.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 22 contacts → | ||||
Exact match “Birds Connect Seattle advocates and organizes for cities where people and birds thrive.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 17 contacts → | ||||
Exact match “DRCC has never delved into the delineation between Superfund site and affected community-in our view, environmental justice concerns inextricably link harmful pollutant practices…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 15 contacts → | ||||
Exact match “Since 1980, Raedeke (RAD-ĭ-kee) Associates, Inc.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 14 contacts → | ||||
Exact match “We are realistic optimists - activists who see tremendous challenges AND believe we can do something about them.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 10 contacts → | ||||
Exact match “How do we build resilience in frontline communities most affected by the environmental crisis?” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 9 contacts → | ||||
Exact match “Washington Wild protects and restores wild lands and waters in Washington State through advocacy, education, and civic engagement.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 9 contacts → | ||||
Exact match “Green Earth Operations is an environmental science and engineering firm providing objective analysis and environmentally responsible solutions to meet the needs of our clients.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 9 contacts → | ||||
Exact match “Read our December 2023 welcome to new Board Members: https://conta.cc/3t6WFGX Learn about our 2023 accomplishments and how you can support our work: https://conta.cc/4asyyDB…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 8 contacts → | ||||
Exact match “BAN's mission is to champion global environmental health and justice by ending toxic trade, catalyzing a toxics-free future, and campaigning for everyone’s right to a clean…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 5 contacts → | ||||
Exact match “Global Ocean Health (GOH) is a U.S.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 5 contacts → | ||||
Exact match “Outreach, education, advocacy, and campaign design & implementation on environmental issues.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 5 contacts → | ||||
Exact match “EarthTalk is a 501(c)3 non-profit launched in 2018 to leverage the power of the media to help everyday people understand complex environmental issues and become more responsible…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 4 contacts → | ||||
Exact match “Our mission is to inspire value and appreciation of the outdoors by expanding public access to parks, wilderness, and open space worldwide.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 3 contacts → | ||||
Exact match “We are a Seattle based nonprofit focused on all 3 pillars of sustainability - Environment, Society and Economics.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 2 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 1 contacts → | ||||
Exact match “Why?” Recorded in the RevenueBase company graph · Nov 6, 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 science nonprofits”. 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 20 of 35 environmental science nonprofits based in Seattle, United States
See the full list, filter by size, metro and specialty, and access 372 tracked professional contacts with verified work emails. Direct dials are available where recorded.
Free signup · no credit card
Environmental science nonprofits based in Seattle, United States at a glance
As of Nov 6, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than for Seattle, so it is reported there. Company counts and contact totals on this page are exact for Seattle, over 35 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 Seattle, United States whose business descriptions match “environmental science nonprofits” 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 372 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 November 6, 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 science nonprofits by metro in the United States
- Environmental science nonprofits in Washington87
- Environmental science nonprofits in New York84
- Environmental science nonprofits in San Francisco45
- Environmental science nonprofits in Portland43
- Environmental science nonprofits in Los Angeles40
- Environmental science nonprofits in San Diego29
- Environmental science nonprofits in Atlanta28
- Environmental science nonprofits in Denver25
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 science nonprofits”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many environmental science nonprofits are there based in Seattle, United States?
RevenueBase identified 35 company matches for environmental science nonprofits associated with Seattle, United States as of November 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?
Earthcorps 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 science nonprofits?
Washington leads the United States with 87 company records, followed by New York (84) and San Francisco (45). Seattle has 35.
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 372 professional contacts with verified work emails tracked across these 35 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 November 6, 2026.
Ready to reach these companies? Verified emails and direct dials for all 35 environmental science nonprofits based in Seattle, United States. Start with a free account, no credit card.
Download this list →Related lists
Environmental science nonprofits by geography
- Environmental science nonprofits based in Sydney, Australia
- Environmental science nonprofits based in Sao Paulo, Brazil
- Environmental science nonprofits based in Montreal, Canada
- Environmental science nonprofits based in Toronto, Canada
- Environmental science nonprofits based in Vancouver, Canada
- Environmental science nonprofits based in Paris, France
- Environmental science nonprofits based in Berlin, Germany
- Environmental science nonprofits based in Bangalore, India
- Environmental science nonprofits based in New Delhi, India
- Environmental science nonprofits based in Madrid, Spain
- Environmental science nonprofits based in London, United Kingdom
- Environmental science nonprofits based in Atlanta, United States
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 science nonprofits based in Sydney, Australia
- Environmental science nonprofits based in Sao Paulo, Brazil
- Environmental science nonprofits based in Montreal, Canada
- Environmental science nonprofits based in Toronto, Canada
- Environmental science nonprofits based in Vancouver, Canada
- Environmental science nonprofits based in Paris, France
Company intelligence · public preview
Top 20 environmental science nonprofits based in Seattle, 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 35 matching company records for environmental science nonprofits based in Seattle, United States, with 1,398 tracked contacts and 372 verified work emails.
This public preview shows 20 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 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 20 environmental science nonprofits based in Seattle, 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 |  Earthcorpsearthcorps.orgHQ: Seattle, WA, United StatesReported employees: 11-50 | Seattle, WA, United States | 11-50 | Exact match | 96 contacts → |
“EarthCorps cultivates leaders and community partnerships to advance environmental justice.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Washington Conservation Actionwaconservationaction.orgHQ: Seattle, WA, United StatesReported employees: 11-50 | Seattle, WA, United States | 11-50 | Exact match | 57 contacts → |
“Washington Conservation Action’s mission is to strengthen our democracy, elect champions, and mobilize the public for environmental progress and justice in the Pacific Northwest.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  ECOSSecoss.orgHQ: Seattle, WA, United StatesReported employees: 11-50 | Seattle, WA, United States | 11-50 | Exact match | 27 contacts → |
“Mission: ECOSS is devoted to promoting environmental justice and sustainability in an effort to build immigrant and refugee communities that can shape their environmental futures.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Toxic-Free Futuretoxicfreefuture.orgHQ: Seattle, WA, United StatesReported employees: 11-50 | Seattle, WA, United States | 11-50 | Exact match | 24 contacts → |
“Toxic-Free Future is a national leader in environmental health research and advocacy.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Birds Connect Seattlebirdsconnectsea.orgHQ: Seattle, WA, United StatesReported employees: 11-50 | Seattle, WA, United States | 11-50 | Exact match | 22 contacts → |
“Birds Connect Seattle advocates and organizes for cities where people and birds thrive.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Duwamish River Community Coalitionduwamishcleanup.orgHQ: Seattle, WA, United StatesReported employees: 1-10 | Seattle, WA, United States | 1-10 | Exact match | 17 contacts → |
“DRCC has never delved into the delineation between Superfund site and affected community-in our view, environmental justice concerns inextricably link harmful pollutant practices…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Raedeke Associates, INCraedeke.comHQ: Seattle, WA, United StatesReported employees: 11-50 | Seattle, WA, United States | 11-50 | Exact match | 15 contacts → |
“Since 1980, Raedeke (RAD-ĭ-kee) Associates, Inc.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Feel Good Actionfeelgoodaction.orgHQ: Seattle, United StatesReported employees: 11-50 | Seattle, United States | 11-50 | Exact match | 14 contacts → |
“We are realistic optimists - activists who see tremendous challenges AND believe we can do something about them.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Basilica BIObasilicabio.orgHQ: Seattle, WA, United StatesReported employees: 1-10 | Seattle, WA, United States | 1-10 | Exact match | 10 contacts → |
“How do we build resilience in frontline communities most affected by the environmental crisis?” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Washington Wildwawild.orgHQ: Seattle, WA, United StatesReported employees: 1-10 | Seattle, WA, United States | 1-10 | Exact match | 9 contacts → |
“Washington Wild protects and restores wild lands and waters in Washington State through advocacy, education, and civic engagement.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Green Earth Operations, INCgreenearthops.comHQ: Seattle, WA, United StatesReported employees: 11-50 | Seattle, WA, United States | 11-50 | Exact match | 9 contacts → |
“Green Earth Operations is an environmental science and engineering firm providing objective analysis and environmentally responsible solutions to meet the needs of our clients.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Sustainable Seattle S2sustainableseattle.orgHQ: Seattle, WA, United StatesReported employees: 1-10 | Seattle, WA, United States | 1-10 | Exact match | 9 contacts → |
“Read our December 2023 welcome to new Board Members: https://conta.cc/3t6WFGX Learn about our 2023 accomplishments and how you can support our work: https://conta.cc/4asyyDB…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Basel Action Networkban.orgHQ: Seattle, WA, United StatesReported employees: 1-10 | Seattle, WA, United States | 1-10 | Exact match | 8 contacts → |
“BAN's mission is to champion global environmental health and justice by ending toxic trade, catalyzing a toxics-free future, and campaigning for everyone’s right to a clean…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Global Ocean Healthglobaloceanhealth.orgHQ: Seattle, WA, United StatesReported employees: 1-10 | Seattle, WA, United States | 1-10 | Exact match | 5 contacts → |
“Global Ocean Health (GOH) is a U.S.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Sierra Club Washington Statesierraclub.orgHQ: Seattle, WA, United StatesReported employees: 1-10 | Seattle, WA, United States | 1-10 | Exact match | 5 contacts → |
“Outreach, education, advocacy, and campaign design & implementation on environmental issues.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Earthtalkearthtalk.orgHQ: Seattle, WA, United StatesReported employees: 1-10 | Seattle, WA, United States | 1-10 | Exact match | 5 contacts → |
“EarthTalk is a 501(c)3 non-profit launched in 2018 to leverage the power of the media to help everyday people understand complex environmental issues and become more responsible…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Totagoturnofftheapp.comHQ: Seattle, WA, United StatesReported employees: 1-10 | Seattle, WA, United States | 1-10 | Exact match | 4 contacts → |
“Our mission is to inspire value and appreciation of the outdoors by expanding public access to parks, wilderness, and open space worldwide.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Phoenix Reclamation Projectphoenixreclamationproject.orgHQ: Seattle, WA, United StatesReported employees: 1-10 | Seattle, WA, United States | 1-10 | Exact match | 3 contacts → |
“We are a Seattle based nonprofit focused on all 3 pillars of sustainability - Environment, Society and Economics.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Kampmeier & Knutsen Pllckampmeierknutsen.com HQ: Seattle, WA, United StatesReported employees: 1-10 | Seattle, WA, United States | 1-10 | Exact match | 2 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 20 |  Shelterwood Consultingshelterwoodconsulting.comHQ: Seattle, United StatesReported employees: 1-10 | Seattle, United States | 1-10 | Exact match | 1 contacts → |
“Why?” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 20 of 35 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Environmental science nonprofits: dataset insights
November 6, 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
35 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 Seattle, so it is reported there. Company counts and contact totals on this page are exact for Seattle, over 35 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: November 6, 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 science nonprofits by metro in the United States
- Environmental science nonprofits in Washington87
- Environmental science nonprofits in New York84
- Environmental science nonprofits in San Francisco45
- Environmental science nonprofits in Portland43
- Environmental science nonprofits in Los Angeles40
- Environmental science nonprofits in San Diego29
- Environmental science nonprofits in Atlanta28
- Environmental science nonprofits in Denver25
Questions about this company list
What does Exact match mean for environmental science nonprofits?
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 science nonprofits did RevenueBase find based in Seattle, United States?
The saved snapshot records 35 matching company records, 1,398 tracked contacts and 372 verified emails. The public preview displays 20 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: November 6, 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 science nonprofits by geography
- Environmental science nonprofits based in Sydney, Australia
- Environmental science nonprofits based in Sao Paulo, Brazil
- Environmental science nonprofits based in Montreal, Canada
- Environmental science nonprofits based in Toronto, Canada
- Environmental science nonprofits based in Vancouver, Canada
- Environmental science nonprofits based in Paris, France
- Environmental science nonprofits based in Berlin, Germany
- Environmental science nonprofits based in Bangalore, India
- Environmental science nonprofits based in New Delhi, India
- Environmental science nonprofits based in Madrid, Spain
- Environmental science nonprofits based in London, United Kingdom
- Environmental science nonprofits based in Atlanta, United States
Cite this list
RevenueBase Data Team. Top 20 environmental science nonprofits based in Seattle, United States. Snapshot: November 6, 2026. https://revenuebase.ai/companies/environmental-science-nonprofits/united-states/seattle.
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 science nonprofits based in Sydney, Australia
- Environmental science nonprofits based in Sao Paulo, Brazil
- Environmental science nonprofits based in Montreal, Canada
- Environmental science nonprofits based in Toronto, Canada
- Environmental science nonprofits based in Vancouver, Canada
- Environmental science nonprofits based in Paris, France
Company intelligence · public preview
Top 20 environmental science nonprofits based in Seattle, United States
RevenueBase records 35 matching company records for environmental science nonprofits based in Seattle, United States, with 1,398 tracked contacts and 372 verified work emails.
This public preview shows 20 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 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 20 environmental science nonprofits based in Seattle, 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 | Earthcorpsearthcorps.org HQ: Seattle, WA, United StatesReported employees: 11-50 | Seattle, WA, United States | 11-50 | Exact match | 96 contacts → |
“EarthCorps cultivates leaders and community partnerships to advance environmental justice.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Washington Conservation Actionwaconservationaction.org HQ: Seattle, WA, United StatesReported employees: 11-50 | Seattle, WA, United States | 11-50 | Exact match | 57 contacts → |
“Washington Conservation Action’s mission is to strengthen our democracy, elect champions, and mobilize the public for environmental progress and justice in the Pacific Northwest.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | ECOSSecoss.org HQ: Seattle, WA, United StatesReported employees: 11-50 | Seattle, WA, United States | 11-50 | Exact match | 27 contacts → |
“Mission: ECOSS is devoted to promoting environmental justice and sustainability in an effort to build immigrant and refugee communities that can shape their environmental futures.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Toxic-Free Futuretoxicfreefuture.org HQ: Seattle, WA, United StatesReported employees: 11-50 | Seattle, WA, United States | 11-50 | Exact match | 24 contacts → |
“Toxic-Free Future is a national leader in environmental health research and advocacy.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Birds Connect Seattlebirdsconnectsea.org HQ: Seattle, WA, United StatesReported employees: 11-50 | Seattle, WA, United States | 11-50 | Exact match | 22 contacts → |
“Birds Connect Seattle advocates and organizes for cities where people and birds thrive.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Duwamish River Community Coalitionduwamishcleanup.org HQ: Seattle, WA, United StatesReported employees: 1-10 | Seattle, WA, United States | 1-10 | Exact match | 17 contacts → |
“DRCC has never delved into the delineation between Superfund site and affected community-in our view, environmental justice concerns inextricably link harmful pollutant practices…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Raedeke Associates, INCraedeke.com HQ: Seattle, WA, United StatesReported employees: 11-50 | Seattle, WA, United States | 11-50 | Exact match | 15 contacts → |
“Since 1980, Raedeke (RAD-ĭ-kee) Associates, Inc.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Feel Good Actionfeelgoodaction.org HQ: Seattle, United StatesReported employees: 11-50 | Seattle, United States | 11-50 | Exact match | 14 contacts → |
“We are realistic optimists - activists who see tremendous challenges AND believe we can do something about them.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Basilica BIObasilicabio.org HQ: Seattle, WA, United StatesReported employees: 1-10 | Seattle, WA, United States | 1-10 | Exact match | 10 contacts → |
“How do we build resilience in frontline communities most affected by the environmental crisis?” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Washington Wildwawild.org HQ: Seattle, WA, United StatesReported employees: 1-10 | Seattle, WA, United States | 1-10 | Exact match | 9 contacts → |
“Washington Wild protects and restores wild lands and waters in Washington State through advocacy, education, and civic engagement.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Green Earth Operations, INCgreenearthops.com HQ: Seattle, WA, United StatesReported employees: 11-50 | Seattle, WA, United States | 11-50 | Exact match | 9 contacts → |
“Green Earth Operations is an environmental science and engineering firm providing objective analysis and environmentally responsible solutions to meet the needs of our clients.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Sustainable Seattle S2sustainableseattle.org HQ: Seattle, WA, United StatesReported employees: 1-10 | Seattle, WA, United States | 1-10 | Exact match | 9 contacts → |
“Read our December 2023 welcome to new Board Members: https://conta.cc/3t6WFGX Learn about our 2023 accomplishments and how you can support our work: https://conta.cc/4asyyDB…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Basel Action Networkban.org HQ: Seattle, WA, United StatesReported employees: 1-10 | Seattle, WA, United States | 1-10 | Exact match | 8 contacts → |
“BAN's mission is to champion global environmental health and justice by ending toxic trade, catalyzing a toxics-free future, and campaigning for everyone’s right to a clean…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Global Ocean Healthglobaloceanhealth.org HQ: Seattle, WA, United StatesReported employees: 1-10 | Seattle, WA, United States | 1-10 | Exact match | 5 contacts → |
“Global Ocean Health (GOH) is a U.S.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Sierra Club Washington Statesierraclub.org HQ: Seattle, WA, United StatesReported employees: 1-10 | Seattle, WA, United States | 1-10 | Exact match | 5 contacts → |
“Outreach, education, advocacy, and campaign design & implementation on environmental issues.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Earthtalkearthtalk.org HQ: Seattle, WA, United StatesReported employees: 1-10 | Seattle, WA, United States | 1-10 | Exact match | 5 contacts → |
“EarthTalk is a 501(c)3 non-profit launched in 2018 to leverage the power of the media to help everyday people understand complex environmental issues and become more responsible…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Totagoturnofftheapp.com HQ: Seattle, WA, United StatesReported employees: 1-10 | Seattle, WA, United States | 1-10 | Exact match | 4 contacts → |
“Our mission is to inspire value and appreciation of the outdoors by expanding public access to parks, wilderness, and open space worldwide.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Phoenix Reclamation Projectphoenixreclamationproject.org HQ: Seattle, WA, United StatesReported employees: 1-10 | Seattle, WA, United States | 1-10 | Exact match | 3 contacts → |
“We are a Seattle based nonprofit focused on all 3 pillars of sustainability - Environment, Society and Economics.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Kampmeier & Knutsen Pllckampmeierknutsen.com HQ: Seattle, WA, United StatesReported employees: 1-10 | Seattle, WA, United States | 1-10 | Exact match | 2 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 20 | Shelterwood Consultingshelterwoodconsulting.com HQ: Seattle, United StatesReported employees: 1-10 | Seattle, United States | 1-10 | Exact match | 1 contacts → |
“Why?” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 20 of 35 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Environmental science nonprofits: dataset insights
November 6, 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
35 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 Seattle, so it is reported there. Company counts and contact totals on this page are exact for Seattle, over 35 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: November 6, 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 science nonprofits by metro in the United States
- Environmental science nonprofits in Washington87
- Environmental science nonprofits in New York84
- Environmental science nonprofits in San Francisco45
- Environmental science nonprofits in Portland43
- Environmental science nonprofits in Los Angeles40
- Environmental science nonprofits in San Diego29
- Environmental science nonprofits in Atlanta28
- Environmental science nonprofits in Denver25
Questions about this company list
What does Exact match mean for environmental science nonprofits?
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 science nonprofits did RevenueBase find based in Seattle, United States?
The saved snapshot records 35 matching company records, 1,398 tracked contacts and 372 verified emails. The public preview displays 20 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: November 6, 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 science nonprofits by geography
- Environmental science nonprofits based in Sydney, Australia
- Environmental science nonprofits based in Sao Paulo, Brazil
- Environmental science nonprofits based in Montreal, Canada
- Environmental science nonprofits based in Toronto, Canada
- Environmental science nonprofits based in Vancouver, Canada
- Environmental science nonprofits based in Paris, France
- Environmental science nonprofits based in Berlin, Germany
- Environmental science nonprofits based in Bangalore, India
- Environmental science nonprofits based in New Delhi, India
- Environmental science nonprofits based in Madrid, Spain
- Environmental science nonprofits based in London, United Kingdom
- Environmental science nonprofits based in Atlanta, United States
Cite this list
RevenueBase Data Team. Top 20 environmental science nonprofits based in Seattle, United States. Snapshot: November 6, 2026. https://revenuebase.ai/companies/environmental-science-nonprofits/united-states/seattle.
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 science nonprofits based in Sydney, Australia
- Environmental science nonprofits based in Sao Paulo, Brazil
- Environmental science nonprofits based in Montreal, Canada
- Environmental science nonprofits based in Toronto, Canada
- Environmental science nonprofits based in Vancouver, Canada
- Environmental science nonprofits based in Paris, France