Company lists · Data refreshed September 2026

Top 25 Civic environmental organizations based in the United States

Name: Civic environmental organizations based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 977 companies tracked

RevenueBase identified 977 company matches for civic environmental organizations associated with the United States as of September 2026 and tracks 16,693 professional contacts across them, including 6,052 with verified work emails. New York is the largest hub.

This list covers company matches for civic environmental organizations associated with the 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 19, 2026 How this list was built

977Companies

16,693Contacts tracked

6,052Verified emails

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The 25 largest civic environmental organizations based in the United States

Ranked by team size

Top 25 of 977 company matches for civic environmental organizations based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Environmental Defense Fund	Exact match	New York, NY, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,352 contacts →
	Exact match “We are Environmental Defense Fund, a leading environmental nonprofit focused on stabilizing the climate while helping build strong and healthy communities.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
2	Casa Familiar	Exact match	Albuquerque, NM, United StatesHQ recorded Sep 19, 2026	n/a	1,132 contacts →
	Exact match “Casa Familiar is a primary/secondary education company based out of 501 Atrisco Dr Sw, Albuquerque, New Mexico, United States.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3	Natural Resources Defense Council Nrdc	Exact match	New York, NY, United StatesHQ recorded Sep 19, 2026	501-1,000	942 contacts →
	Exact match “NRDC is the nation's most effective environmental action organization.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4	The Providencia Group	Exact match	Ashburn, VA, United StatesHQ recorded Sep 19, 2026	201-500	444 contacts →
	Exact match “At Providencia we are focused on positively impacting the communities where we operate, the lives of vulnerable and underserved populations around the world, and the health of our…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5	RARE	Exact match	Arlington, VA, United StatesHQ recorded Sep 19, 2026	51-200	368 contacts →
	Exact match “Rare is a global leader in driving social change for people and nature.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
6	Union Of Concerned Scientists	Exact match	Cambridge, MA, United StatesHQ recorded Sep 19, 2026	201-500	254 contacts →
	Exact match “Our mission is to use rigorous, independent science to solve our planet's most pressing problems.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7	Better Earth	Exact match	Tampa, FL, United StatesHQ recorded Sep 19, 2026	201-500	244 contacts →
	Exact match “We are creating a more sustainable and better earth through solar energy.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8	Ceres, INC	Exact match	Boston, MA, United StatesHQ recorded Sep 19, 2026	51-200	241 contacts →
	Exact match “Ceres is a nonprofit advocacy organization working to accelerate the transition to a cleaner, more just, and resilient world.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9	Seaside Sustainability	Exact match	Gloucester, MA, United StatesHQ recorded Sep 19, 2026	51-200	240 contacts →
	Exact match “Seaside Sustainability is a nationally recognized, award-winning 501(c)3 charitable organization dedicated to community engagement, education and environmental conservation.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10	The Conservation Fund	Exact match	Arlington, VA, United StatesHQ recorded Sep 19, 2026	201-500	224 contacts →
	Exact match “We are in the business of conservation, creating innovative solutions that drive nature-based action for climate protection, sustainable economies and vibrant communities.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11	League Of Conservation Voters	Exact match	Washington, DC, United StatesHQ recorded Sep 19, 2026	51-200	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
12	Conservation Corps Minnesota & Iowa	Exact match	St. Paul, MN, United StatesHQ recorded Sep 19, 2026	201-500	207 contacts →
	Exact match “At Conservation Corps Minnesota & Iowa, youth and young adults grow as environmental stewards and leaders while giving back to the community through meaningful service.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13	Grownyc	Exact match	New York, NY, United StatesHQ recorded Sep 19, 2026	51-200	185 contacts →
	Exact match “GrowNYC is a hands-on non-profit with a mission to empower all New Yorkers with equitable access to fresh, locally grown food and neighborhood green spaces, reduce waste, and care…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14	Conservation LAW Foundation	Exact match	Boston, MA, United StatesHQ recorded Sep 19, 2026	51-200	174 contacts →
	Exact match “Since 1966, CLF has taken on powerful opponents who would pollute our air and water and squander our resources.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15	Goodwill Of The Finger Lakes	Exact match	Rochester, NY, United StatesHQ recorded Sep 19, 2026	501-1,000	154 contacts →
	Exact match “Elevating people, community, and planet for a good today and better tomorrow.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
16	earthday.org	Exact match	Washington, DC, United StatesHQ recorded Sep 19, 2026	11-50	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
17	Ecology Action	Exact match	Santa Cruz, CA, United StatesHQ recorded Sep 19, 2026	51-200	140 contacts →
	Exact match “Ecology Action is an award-winning California 501(c)(3) non-profit that’s been inspiring sustainable community actions since 1970.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18	Treepeople	Exact match	Beverly Hills, CA, United StatesHQ recorded Sep 19, 2026	51-200	136 contacts →
	Exact match “As the Los Angeles region faces severe impacts from climate change, TreePeople unites the power of trees, people and nature-based solutions to grow a more climate-ready city.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19	Environmental LAW Institute	Exact match	Washington, DC, United StatesHQ recorded Sep 19, 2026	11-50	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
20	Solar ONE	Exact match	Long Island City, NY, United StatesHQ recorded Sep 19, 2026	51-200	99 contacts →
	Exact match “Solar One is a non-profit, environmental education organization that fosters sustainable practices and environmental equity across New York City.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21	Leroy Springs & Company	Exact match	Fort Mill, United StatesHQ recorded Sep 19, 2026	201-500	98 contacts →
	Exact match “Leroy Springs & Co.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
22	Ecotrust	Exact match	Portland, OR, United StatesHQ recorded Sep 19, 2026	51-200	97 contacts →
	Exact match “Ecotrust's mission is to inspire fresh thinking that creates economic opportunity, social equity, and environmental well-being.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
23	Urban Ecology Center	Exact match	Milwaukee, WI, United StatesHQ recorded Sep 19, 2026	51-200	93 contacts →
	Exact match “Our vision is to inspire generations to build environmental curiosity, understanding, and respect.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
24	Environment America	Exact match	Denver, CO, United StatesHQ recorded Sep 19, 2026	51-200	93 contacts →
	Exact match “Every day, we see more heartbreaking evidence of the damage being done to our planet: climate change, plastic pollution, wildlife disappearing forever.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
25	The Water Institute	Exact match	Baton Rouge, LA, United StatesHQ recorded Sep 19, 2026	51-200	92 contacts →
	Exact match “The Water Institute is an independent, non-profit, applied research institution advancing science and developing integrated methods to solve complex environmental and societal…” 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 “civic environmental 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 977 civic environmental organizations based in the United States

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Civic environmental organizations based in the United States at a glance

As of Sep 19, 2026

36.3%Verified-email coverage

17.1Average contacts per company

1-10Median size (employees)

3.8%Largest-city concentration · New York

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

659

11-50

242

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 977 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 the United States whose business descriptions match “civic environmental 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 6,052 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.

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 “civic environmental organizations”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many civic environmental organizations are there based in the United States?

RevenueBase identified 977 company matches for civic environmental organizations associated with the 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?

Environmental Defense Fund tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most civic environmental organizations?

New York leads with 37 company records, followed by Washington (28) and Los Angeles (22).

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 6,052 professional contacts with verified work emails tracked across these 977 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.

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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.