Company lists · Data refreshed September 2026

Top 25 Environmental organizations based in San Francisco, United States

Name: Environmental organizations based in San Francisco, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 128 companies tracked

RevenueBase identified 128 environmental organizations headquartered in San Francisco, United States as of September 2026 and tracks 3,440 professional contacts across them, including 1,940 with verified work emails. Washington is the largest hub.

This list covers environmental organizations headquartered in San Francisco, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 19, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 19, 2026 86% judged on-target in blind review

128Companies

3,440Contacts tracked

1,940Verified emails

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The 25 largest environmental organizations based in San Francisco, United States

Ranked by team size

Top 25 of 128 environmental organizations based in San Francisco, United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to environmental organizations: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Environmental Science Associates	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	501-1,000	732 contacts →
	Strong evidence “ESA is a 100% employee-owned environmental consulting firm.” Source: RevenueBase Database · checked Sep 19, 2026
2	Earthjustice	Indirect evidence	San Francisco, United StatesHQ checked Sep 19, 2026	501-1,000	672 contacts →
	Indirect evidence “Earthjustice is a non-profit public interest law organization dedicated to protecting the magnificent places, natural resources, and wildlife of this earth, and to defending the…” Source: RevenueBase Database · checked Sep 19, 2026
3	Trust For Public Land	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	201-500	531 contacts →
	Indirect evidence “Trust for Public Land (TPL) is a national nonprofit that works to connect everyone to the benefits and joys of the outdoors.” Source: RevenueBase Database · checked Sep 19, 2026
4	Global Exchange	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	11-50	111 contacts →
	Strong evidence “Global Exchange is an international human rights organization dedicated to promoting social, economic and environmental justice since 1988.” Source: RevenueBase Database · checked Sep 19, 2026
5	SAN Francisco Environment Department	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	51-200	111 contacts →
	Strong evidence “The San Francisco Environment Department makes it easy for everyone in San Francisco to take care of their environment, their communities and ultimately, the planet.” Source: RevenueBase Database · checked Sep 19, 2026
6	EHDD	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	51-200	86 contacts →
	Indirect evidence “We create transformative places of belonging and impact.” Source: RevenueBase Database · checked Sep 19, 2026
7	California Trout	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	51-200	75 contacts →
	Indirect evidence “California Trout is a non-profit conservation organization that strives to solve complex resource issues while balancing the needs of wild fish and people through science-based…” Source: RevenueBase Database · checked Sep 19, 2026
8	Rainforest Action Network	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	51-200	74 contacts →
	Indirect evidence “Rainforest Action Network preserves forests, protects the climate and upholds human rights by challenging corporate power and systemic injustice through frontline partnerships and…” Source: RevenueBase Database · checked Sep 19, 2026
9	stand.earth	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	11-50	71 contacts →
	Strong evidence “Stand.earth challenges corporations and governments to treat people and the environment with respect, because our lives depend on it.” Source: RevenueBase Database · checked Sep 19, 2026
10	Wildlife Conservation Network	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	11-50	68 contacts →
	Indirect evidence “Founded in 2002, Wildlife Conservation Network (WCN) is dedicated to protecting endangered species and preserving their natural habitats.” Source: RevenueBase Database · checked Sep 19, 2026
11	Pacific Environment	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	51-200	65 contacts →
	Strong evidence “Pacific Environment confronts our most urgent environmental issues by connecting local and global movements, catalyzing policy change, and inspiring action for the benefit of…” Source: RevenueBase Database · checked Sep 19, 2026
12	TEN Strands	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	n/a	52 contacts →
	Strong evidence “Our mission is to strengthen the partnerships, strategies, and systems that advance environmental literacy, ensuring all California TK–12 students thrive in sustainable, resilient…” Source: RevenueBase Database · checked Sep 19, 2026
13	Sustainable Conservation	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	11-50	42 contacts →
	Indirect evidence “Sustainable Conservation helps California thrive by uniting people to solve the toughest challenges facing our land, air and water.” Source: RevenueBase Database · checked Sep 19, 2026
14	CEA Consulting	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	11-50	41 contacts →
	Strong evidence “CEA Consulting supports a wide range of philanthropies, nonprofits, businesses, and government agencies in effectively tackling urgent environmental challenges-from climate change…” Source: RevenueBase Database · checked Sep 19, 2026
15	Center For Resource Solutions	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	11-50	38 contacts →
	Strong evidence “Center for Resource Solutions (CRS) is an environmental nonprofit that creates policy and market solutions to advance sustainable energy.” Source: RevenueBase Database · checked Sep 19, 2026
16	Breast Cancer Prevention Partners Bcpp	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	11-50	38 contacts →
	Indirect evidence “For over 30 years, we have been the leading science-based policy and advocacy organization working to prevent breast cancer by eliminating our exposure to toxic chemicals.” Source: RevenueBase Database · checked Sep 19, 2026
17	Sher Edling LLP	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	11-50	36 contacts →
	Strong evidence “Sher Edling LLP represents states, tribes, water providers, public agencies, and businesses in high-impact, high-value environmental cases.” Source: RevenueBase Database · checked Sep 19, 2026
18	Green Jobs Network	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	n/a	33 contacts →
	Strong evidence “Founded in 2008, Green Jobs Network is dedicated to helping job seekers who are interested in environmental or social responsibility to find jobs, career resources, and build…” Source: RevenueBase Database · checked Sep 19, 2026
19	Deeproot Green Infrastructure, LLC	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	11-50	25 contacts →
	Strong evidence “Our mission is to create a more livable built environment, providing a high level of ecosystem services, by using green infrastructure like trees, soil, and on-site stormwater…” Source: RevenueBase Database · checked Sep 19, 2026
20	The Redford Center	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	1-10	24 contacts →
	Strong evidence “Co-founded in 2005 by activists and filmmakers Robert Redford and James Redford, The Redford Center is a nonprofit that advances environmental solutions through the power of…” Source: RevenueBase Database · checked Sep 19, 2026
21	Biomaas INC	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	11-50	20 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
22	Earth Force Technologies	Indirect evidence	San Francisco, United StatesHQ checked Sep 19, 2026	11-50	18 contacts →
	Indirect evidence “The Earth is in crisis.” Source: RevenueBase Database · checked Sep 19, 2026
23	Literacy For Environmental Justice	Indirect evidence	San Francisco, United StatesHQ checked Sep 19, 2026	1-10	17 contacts →
	Indirect evidence “Founded in 1998 by a coalition of youth, educators, and community leaders, LEJ addresses the ecological and health concerns of Bayview Hunters Point and the surrounding…” Source: RevenueBase Database · checked Sep 19, 2026
24	Brightline Defense	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	1-10	16 contacts →
	Strong evidence “Brightline is an environmental justice nonprofit that empowers communities and creates sustainable environments.” Source: RevenueBase Database · checked Sep 19, 2026
25	Pisces Foundation	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	11-50	15 contacts →
	Indirect evidence “At the Pisces Foundation, we believe if we act now and boldly, we can quickly accelerate to a world where people and nature thrive together.” Source: RevenueBase Database · checked Sep 19, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: environmental organizations. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names environmental organizations.
Partial evidence: Its own public description names part of environmental organizations, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name environmental organizations. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 128 environmental organizations based in San Francisco, United States

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Environmental organizations based in San Francisco, United States at a glance

As of Sep 19, 2026

56.4%Verified-email coverage

26.9Average contacts per company

1-10Median size (employees)

163.3%Largest-city concentration · Washington

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured across the whole United States list rather than for San Francisco, so it is reported there. Company counts and contact totals on this page are exact for San Francisco, over 128 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among environmental organizations, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in San Francisco, United States whose own description of what they do matches “environmental organizations”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names environmental organizations), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among environmental organizations, and records with no verified work email. Companies headquartered outside San Francisco are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 1,940 across the full list. 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.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Environmental organizations by metro in the United States

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names environmental organizations, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many environmental organizations are there based in San Francisco, United States?

RevenueBase identified 128 environmental organizations headquartered in San Francisco, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Environmental Science Associates, headquartered in San Francisco, tops this list with the largest team on record.

Which city has the most environmental organizations?

Washington leads with 209 headquartered companies, followed by New York (204) and Los Angeles (133).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,940 verified decision-maker contacts tracked across these 128 companies.

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 Smart Search, 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.