Company lists · Data refreshed September 2026

Top 25 Environmental organizations based in Boston, United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 65 companies tracked

RevenueBase identified 65 company matches for environmental organizations associated with Boston, United States as of September 2026 and tracks 2,411 professional contacts across them, including 1,154 with verified work emails. Across the United States, Washington is the largest hub for this category (209 companies); Boston has 65.

This list covers company matches for environmental organizations associated with Boston, 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

65Companies

2,411Contacts tracked

1,154Verified emails

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The 25 largest environmental organizations based in Boston, United States

Ranked by team size

Top 25 of 65 company matches for environmental organizations based in Boston, 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	Appalachian Mountain Club	Exact match	Boston, MA, United StatesHQ recorded Sep 19, 2026	201-500	378 contacts →
	Exact match “The mission of the Appalachian Mountain Club is to foster the protection, enjoyment, and understanding of the outdoors.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
2	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
3	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
4	Earthwatch Institute	Exact match	Boston, MA, United StatesHQ recorded Sep 19, 2026	n/a	100 contacts →
	Exact match “Earthwatch Institute is focused on expanding access to hands-on science education.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5	Allonnia	Exact match	Boston, MA, United StatesHQ recorded Sep 19, 2026	11-50	69 contacts →
	Exact match “Allonnia develops sustainable solutions to address some of the world’s most complex environmental challenges.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
6	Corporate Accountability	Exact match	Boston, MA, United StatesHQ recorded Sep 19, 2026	11-50	47 contacts →
	Exact match “Corporate Accountability stops transnational corporations from devastating democracy, trampling human rights, and destroying our planet.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7	Environmental League Of Massachusetts ELM	Exact match	Boston, MA, United StatesHQ recorded Sep 19, 2026	11-50	38 contacts →
	Exact match “The Environmental League of Massachusetts advocates for policy that meets the scale and urgency of our environmental challenges.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8	Save The Harbor Save The BAY	Exact match	Boston, MA, United StatesHQ recorded Sep 19, 2026	n/a	36 contacts →
	Exact match “Save the Harbor/Save the Bay is a non-profit, public interest, environmental advocacy organization made up of thousands of citizens, as well as scientists and civic, corporate…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9	Alternatives For Community And Environment	Exact match	Boston, MA, United StatesHQ recorded Sep 19, 2026	1-10	23 contacts →
	Exact match “ACE builds the power of communities of color and low income communities in Massachusetts to eradicate environmental racism and classism, create healthy sustainable communities…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10	Environmental Voter Project	Exact match	Boston, MA, United StatesHQ recorded Sep 19, 2026	1-10	20 contacts →
	Exact match “The Environmental Voter Project is a non-partisan nonprofit with a laser focus on getting environmentalists to vote.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11	Living On Earth	Exact match	Boston, MA, United StatesHQ recorded Sep 19, 2026	11-50	17 contacts →
	Exact match “As the planet we call home faces a climate emergency, Living on Earth is your go-to source for the latest coverage of climate change, ecology, and human health.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
12	Green Restaurant Association	Exact match	Boston, MA, United StatesHQ recorded Sep 19, 2026	1-10	14 contacts →
	Exact match “The Green Restaurant Association is a national non-profit organization that provides the only official Certified Green Restaurants® mark in the country.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13	Applied Economics Clinic	Exact match	Boston, MA, United StatesHQ recorded Sep 19, 2026	1-10	13 contacts →
	Exact match “Based in Massachusetts, the Applied Economics Clinic (AEC) is a mission-based non-profit consulting group that offers expert services in the areas of energy, environment, consumer…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14	Massrecycle	Exact match	Boston, MA, United StatesHQ recorded Sep 19, 2026	1-10	13 contacts →
	Exact match “MassRecycle is a 501(c)3 nonprofit organization dedicated to promoting and realizing the vital environmental, social and economic benefits created by reducing, reusing, and…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15	The Isosceles Group	Exact match	Boston, MA, United StatesHQ recorded Sep 19, 2026	11-50	12 contacts →
	Exact match “The Isosceles Group provides environmental management and occupational health and safety services to industry and governments worldwide.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
16	The Grantham Foundation For The Protection Of The Environment	Exact match	Boston, MA, United StatesHQ recorded Sep 19, 2026	11-50	11 contacts →
	Exact match “The Grantham Foundation seeks to protect and improve the health of the global environment.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17	Frontier Group Non-Profit Think Tank	Exact match	Boston, MA, United StatesHQ recorded Sep 19, 2026	1-10	9 contacts →
	Exact match “Frontier Group provides information and ideas to build a healthier, more sustainable America.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18	Newmoa	Exact match	Boston, MA, United StatesHQ recorded Sep 19, 2026	1-10	8 contacts →
	Exact match “Leading the Northeast to a sustainable, waste-free future NEWMOA is a non-profit, non-partisan, interstate association whose membership is composed of the state environment agency…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19	Community Action Works	Exact match	Boston, MA, United StatesHQ recorded Sep 19, 2026	1-10	8 contacts →
	Exact match “At Community Action Works, we believe that environmental threats are big, but the power of well-organized community groups is bigger.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20	National Environmental LAW Center	Exact match	Boston, MA, United StatesHQ recorded Sep 19, 2026	1-10	7 contacts →
	Exact match “The National Environmental Law Center (NELC) is a non-profit public interest litigation center founded in 1990 to enforce anti-pollution laws and promote long-term solutions to…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21	Digital Emissions	Exact match	Boston, MA, United StatesHQ recorded Sep 19, 2026	11-50	7 contacts →
	Exact match “A non-profit working towards a Digital and Sustainable future.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
22	E INC	Exact match	Boston, MA, United StatesHQ recorded Sep 19, 2026	1-10	7 contacts →
	Exact match “e" inc.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
23	Healthy Ocean Coalition	Exact match	Boston, MA, United StatesHQ recorded Sep 19, 2026	1-10	6 contacts →
	Exact match “Our Mission We are a national network of ocean lovers – a free-to-join coalition of the willing - dedicated to preventing the exploitation, destruction, and neglect of our ocean…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
24	Reciclajes Tepuy	Exact match	Boston, United StatesHQ recorded Sep 19, 2026	11-50	6 contacts →
	Exact match “Con más de 13 años de trayectoria, Reciclajes Tepuy es más que una empresa de reciclaje: somos una organización que busca impactar de forma positiva el medio ambiente a través de…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
25	Sierra Club Massachusetts Chapter	Exact match	Boston, MA, United StatesHQ recorded Sep 19, 2026	1-10	5 contacts →
	Exact match “Massachusetts Sierra Club is the state chapter of the largest, oldest, and most influential environmental grassroots organization in the country.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “environmental 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 65 environmental organizations based in Boston, United States

See the full list, filter by size, metro and specialty, and access 1,154 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Environmental organizations based in Boston, United States at a glance

As of Sep 19, 2026

47.9%Verified-email coverage

37.1Average contacts per company

1-10Median size (employees)

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured across the whole United States list rather than for Boston, so it is reported there. Company counts and contact totals on this page are exact for Boston, over 65 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 Boston, United States whose business descriptions match “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 1,154 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 19, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Environmental organizations by metro in the United States

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

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

RevenueBase identified 65 company matches for environmental organizations associated with Boston, 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?

Appalachian Mountain Club 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 organizations?

Washington leads the United States with 209 company records, followed by New York (204) and Los Angeles (133). Boston has 65.

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,154 professional contacts with verified work emails tracked across these 65 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.