Company lists · Data refreshed September 2026

Top 21 Environmental organizations based in Berkeley, United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 36 companies tracked

RevenueBase identified 36 environmental organizations headquartered in Berkeley, United States as of September 2026 and tracks 550 professional contacts across them, including 246 with verified work emails. Washington is the largest hub.

This list covers environmental organizations headquartered in Berkeley, 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

36Companies

550Contacts tracked

246Verified emails

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The 21 largest environmental organizations based in Berkeley, United States

Ranked by team size

Top 21 of 36 environmental organizations based in Berkeley, 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	Earth Island Institute	Strong evidence	Berkeley, CA, United StatesHQ checked Sep 19, 2026	51-200	64 contacts →
	Strong evidence “Earth Island Institute is a nonprofit environmental organization and fiscal sponsor to more than seventy-five projects working in the areas of conservation, climate change…” Source: RevenueBase Database · checked Sep 19, 2026
2	Ecology Center, Berkeley	Strong evidence	Berkeley, CA, United StatesHQ checked Sep 19, 2026	11-50	48 contacts →
	Strong evidence “Founded in 1969, the Ecology Center is a nonprofit organization, located in Berkeley, California, that focuses on the environmental impacts of urban residents.” Source: RevenueBase Database · checked Sep 19, 2026
3	Plastic Pollution Coalition	Indirect evidence	Berkeley, CA, United StatesHQ checked Sep 19, 2026	n/a	39 contacts →
	Indirect evidence “The Plastic Pollution Coalition is a global, strategic alliance of individuals, organizations, and businesses working together to end plastic pollution and its toxic impacts on…” Source: RevenueBase Database · checked Sep 19, 2026
4	Earthteam	Strong evidence	Berkeley, United StatesHQ checked Sep 19, 2026	n/a	37 contacts →
	Strong evidence “Earth Team’s mission is to create a new generation of environmental leaders by introducing, into the classroom and the community, environmental experiences that are so active…” Source: RevenueBase Database · checked Sep 19, 2026
5	Earth Innovation Institute	Indirect evidence	Berkeley, CA, United StatesHQ checked Sep 19, 2026	11-50	35 contacts →
	Indirect evidence “At Earth Innovation Institute, we foster the transition to low-emission rural development – a shift to economic growth that keeps forests and fisheries intact and rewards farmers…” Source: RevenueBase Database · checked Sep 19, 2026
6	The Breakthrough Institute	Strong evidence	Berkeley, CA, United StatesHQ checked Sep 19, 2026	11-50	27 contacts →
	Strong evidence “The Breakthrough Institute is a paradigm-shifting think tank committed to modernizing environmentalism for the 21st century.” Source: RevenueBase Database · checked Sep 19, 2026
7	Seacology	Strong evidence	Berkeley, CA, United StatesHQ checked Sep 19, 2026	1-10	25 contacts →
	Strong evidence “Seacology is an international environmental nonprofit organization that focuses on saving endangered species, habitats and cultures of islands throughout the world.” Source: RevenueBase Database · checked Sep 19, 2026
8	The Story Of Stuff Project	Indirect evidence	Berkeley, CA, United StatesHQ checked Sep 19, 2026	11-50	15 contacts →
	Indirect evidence “We have a problem with Stuff: we have too much of it, too much of it is toxic, and we don’t share it very well.” Source: RevenueBase Database · checked Sep 19, 2026
9	Kids For The BAY	Strong evidence	Berkeley, CA, United StatesHQ checked Sep 19, 2026	1-10	14 contacts →
	Strong evidence “KIDS for the BAY provides vital environmental education programs to elementary schools throughout the East San Francisco Bay Area.” Source: RevenueBase Database · checked Sep 19, 2026
10	David Brower Center	Strong evidence	Berkeley, CA, United StatesHQ checked Sep 19, 2026	11-50	13 contacts →
	Strong evidence “The David Brower Center provides a home for the environmental movement by advocating for the beauty, diversity, and ecological integrity of Earth.” Source: RevenueBase Database · checked Sep 19, 2026
11	Coastal Quest	Strong evidence	Berkeley, CA, United StatesHQ checked Sep 19, 2026	1-10	12 contacts →
	Strong evidence “Our mission is to create lasting solutions to protect, sustain, reduce threats to, and enhance the natural and cultural heritage of our coastal environments for present and future…” Source: RevenueBase Database · checked Sep 19, 2026
12	350 BAY Area	Indirect evidence	Berkeley, CA, United StatesHQ checked Sep 19, 2026	1-10	11 contacts →
	Indirect evidence “Mission - We are building a grassroots climate movement in the Bay Area and beyond to eliminate carbon pollution and achieve a clean energy future with racial, economic, and…” Source: RevenueBase Database · checked Sep 19, 2026
13	Greenfire Law, PC	Strong evidence	Berkeley, CA, United StatesHQ checked Sep 19, 2026	1-10	10 contacts →
	Strong evidence “Greenfire Law, PC is a public interest environmental and animal law firm located in Berkeley, CA.” Source: RevenueBase Database · checked Sep 19, 2026
14	Association For Environmental And Outdoor Education Aeoe	Strong evidence	Berkeley, CA, United StatesHQ checked Sep 19, 2026	1-10	9 contacts →
	Strong evidence “The Association for Environmental and Outdoor Education (AEOE) strengthens environmental education in California by connecting providers, building professional expertise, and…” Source: RevenueBase Database · checked Sep 19, 2026
15	Global Student Embassy	Strong evidence	Berkeley, CA, United StatesHQ checked Sep 19, 2026	1-10	6 contacts →
	Strong evidence “Global Student Embassy (GSE) develops community leaders through action oriented environmental education.” Source: RevenueBase Database · checked Sep 19, 2026
16	Climate Rights International	Indirect evidence	Berkeley, United StatesHQ checked Sep 19, 2026	11-50	6 contacts →
	Indirect evidence “CRI is a new international climate and human rights monitoring and advocacy organization dedicated to preventing and addressing climate-change related human rights abuses; holding…” Source: RevenueBase Database · checked Sep 19, 2026
17	Ethical Traveler	Indirect evidence	Berkeley, CA, United StatesHQ checked Sep 19, 2026	11-50	5 contacts →
	Indirect evidence “Ethical Traveler is an international alliance of travelers who believe that travel is a powerful tool for international goodwill and cultural understanding.” Source: RevenueBase Database · checked Sep 19, 2026
18	Berkeley Earth	Strong evidence	Berkeley, CA, United StatesHQ checked Sep 19, 2026	11-50	5 contacts →
	Strong evidence “As the world’s only independent, non-governmental source of comprehensive environmental data and analysis, our impact is fundamental: Our global warming and air pollution data…” Source: RevenueBase Database · checked Sep 19, 2026
19	Invested In Climate	Indirect evidence	Berkeley, CA, United StatesHQ checked Sep 19, 2026	1-10	2 contacts →
	Indirect evidence “We all want to do more for the planet.” Source: RevenueBase Database · checked Sep 19, 2026
20	Regen360	Indirect evidence	Berkeley, CA, United StatesHQ checked Sep 19, 2026	1-10	1 contacts →
	Indirect evidence “Time is short.” Source: RevenueBase Database · checked Sep 19, 2026
21	Wild Heritage	Indirect evidence	Berkeley, CA, United StatesHQ checked Sep 19, 2026	1-10	1 contacts →
	Indirect evidence 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 21 of 36 environmental organizations based in Berkeley, United States

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Environmental organizations based in Berkeley, United States at a glance

As of Sep 19, 2026

44.7%Verified-email coverage

15.3Average contacts per company

11-50Median size (employees)

580.6%Largest-city concentration · Washington

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

Email recency for this list is measured across the whole United States list rather than for Berkeley, so it is reported there. Company counts and contact totals on this page are exact for Berkeley, over 36 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 Berkeley, 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 Berkeley 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, 246 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 Berkeley, United States?

RevenueBase identified 36 environmental organizations headquartered in Berkeley, 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?

Earth Island Institute, headquartered in Berkeley, 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 246 verified decision-maker contacts tracked across these 36 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.