Company lists · Data refreshed September 2026

Top 25 Habitat restoration nonprofits based in the United States

Name: Habitat restoration nonprofits based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 1,122 companies tracked

RevenueBase identified 1,122 habitat restoration nonprofits headquartered in the United States as of September 2026 and tracks 24,248 professional contacts across them, including 8,819 with verified work emails. Portland is the largest hub.

This list covers habitat restoration nonprofits headquartered in the 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 20, 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 20, 2026 86% judged on-target in blind review

1,122Companies

24,248Contacts tracked

8,819Verified emails

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The 25 largest habitat restoration nonprofits based in the United States

Ranked by team size

Top 25 of 1,122 habitat restoration nonprofits based in the United States, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to habitat restoration nonprofits: 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	The Nature Conservancy	Indirect evidence	Arlington, VA, United StatesHQ checked Sep 20, 2026	5,001-10,000	6,526 contacts →
	Indirect evidence “Air, water, food, shelter, income: nature sustains every aspect of our lives.” Source: RevenueBase Database · checked Sep 20, 2026
2	Conservation International	Indirect evidence	Arlington, VA, United StatesHQ checked Sep 20, 2026	501-1,000	1,560 contacts →
	Indirect evidence “Since 1987, Conservation International has worked to spotlight and secure the critical benefits that nature provides to humanity.” Source: RevenueBase Database · checked Sep 20, 2026
3	Student Conservation Association	Indirect evidence	Arlington, VA, United StatesHQ checked Sep 20, 2026	201-500	795 contacts →
	Indirect evidence “The Student Conservation Association (SCA) is the largest provider of hands-on environmental conservation programs for youth and adults.” Source: RevenueBase Database · checked Sep 20, 2026
4	National Wildlife Federation	Indirect evidence	Reston, VA, United StatesHQ checked Sep 20, 2026	201-500	585 contacts →
	Indirect evidence “As America's largest non-profit conservation organization, the National Wildlife Federation works closely with those who span the social and political spectrum, but who are…” Source: RevenueBase Database · checked Sep 20, 2026
5	Mass Audubon	Indirect evidence	Lincoln, MA, United StatesHQ checked Sep 20, 2026	201-500	554 contacts →
	Indirect evidence “Mass Audubon is the largest nature-based conservation organization in New England.” Source: RevenueBase Database · checked Sep 20, 2026
6	RARE	Indirect evidence	Arlington, VA, United StatesHQ checked Sep 20, 2026	51-200	368 contacts →
	Indirect evidence “Rare is a global leader in driving social change for people and nature.” Source: RevenueBase Database · checked Sep 20, 2026
7	Seaside Sustainability	Indirect evidence	Gloucester, MA, United StatesHQ checked Sep 20, 2026	51-200	240 contacts →
	Indirect evidence “Seaside Sustainability is a nationally recognized, award-winning 501(c)3 charitable organization dedicated to community engagement, education and environmental conservation.” Source: RevenueBase Database · checked Sep 20, 2026
8	The Conservation Fund	Indirect evidence	Arlington, VA, United StatesHQ checked Sep 20, 2026	201-500	224 contacts →
	Indirect evidence “We are in the business of conservation, creating innovative solutions that drive nature-based action for climate protection, sustainable economies and vibrant communities.” Source: RevenueBase Database · checked Sep 20, 2026
9	Center For Biological Diversity	Indirect evidence	Tucson, AZ, United StatesHQ checked Sep 20, 2026	51-200	219 contacts →
	Indirect evidence “At the Center for Biological Diversity, we believe that the welfare of human beings is deeply linked to nature, to the existence in our world of a vast diversity of wild animals…” Source: RevenueBase Database · checked Sep 20, 2026
10	Conservation Corps Minnesota & Iowa	Indirect evidence	St. Paul, MN, United StatesHQ checked Sep 20, 2026	201-500	207 contacts →
	Indirect evidence “At Conservation Corps Minnesota & Iowa, youth and young adults grow as environmental stewards and leaders while giving back to the community through meaningful service.” Source: RevenueBase Database · checked Sep 20, 2026
11	Defenders Of Wildlife	Indirect evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	51-200	202 contacts →
	Indirect evidence “Defenders of Wildlife is dedicated to the protection of all native animals and plants in their natural communities.” Source: RevenueBase Database · checked Sep 20, 2026
12	National Forest Foundation	Partial evidence	Missoula, MT, United StatesHQ checked Sep 20, 2026	51-200	171 contacts →
	Partial evidence “The NFF works with communities and organizations to conserve and enhance the watersheds, wildlife habitat and wild places across our 193-million-acre National Forest System.” Source: RevenueBase Database · checked Sep 20, 2026
13	Point Blue Conservation Science	Partial evidence	Petaluma, CA, United StatesHQ checked Sep 20, 2026	51-200	160 contacts →
	Partial evidence “Point Blue Conservation Science (Point Blue) is dedicated to conserving birds, other wildlife, and ecosystems through innovative scientific research, restoration, outreach and…” Source: RevenueBase Database · checked Sep 20, 2026
14	Ecology Action	Indirect evidence	Santa Cruz, CA, United StatesHQ checked Sep 20, 2026	51-200	140 contacts →
	Indirect evidence “Ecology Action is an award-winning California 501(c)(3) non-profit that’s been inspiring sustainable community actions since 1970.” Source: RevenueBase Database · checked Sep 20, 2026
15	American Forests	Partial evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	51-200	136 contacts →
	Partial evidence “Founded in 1875, American Forests is the oldest national nonprofit conservation organization in the U.S.” Source: RevenueBase Database · checked Sep 20, 2026
16	Treepeople	Indirect evidence	Beverly Hills, CA, United StatesHQ checked Sep 20, 2026	51-200	136 contacts →
	Indirect evidence “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.” Source: RevenueBase Database · checked Sep 20, 2026
17	Eden People Planet	Strong evidence	Murrieta, CA, United StatesHQ checked Sep 20, 2026	11-50	131 contacts →
	Strong evidence “Eden: People+Planet is a global 501(c)(3) nonprofit organization focused on landscape restoration and conservation through community partnerships.” Source: RevenueBase Database · checked Sep 20, 2026
18	Trees Atlanta	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 20, 2026	11-50	111 contacts →
	Indirect evidence “Founded in 1985 by Central Atlanta Progress, the Junior League of Atlanta, Inc.” Source: RevenueBase Database · checked Sep 20, 2026
19	Ecology Project International	Indirect evidence	Missoula, MT, United StatesHQ checked Sep 20, 2026	51-200	105 contacts →
	Indirect evidence “EPI is a non-profit organization dedicated to developing place-based, ecological education partnerships between local experts and high school students to address critical…” Source: RevenueBase Database · checked Sep 20, 2026
20	Terraformation	Indirect evidence	Waimea, United StatesHQ checked Sep 20, 2026	51-200	101 contacts →
	Indirect evidence “Restoring the world's native forests to address climate change, renew biodiverse ecosystems, and support thriving communities.” Source: RevenueBase Database · checked Sep 20, 2026
21	Environmental Quality Resources, LLC	Partial evidence	Millersville, MD, United StatesHQ checked Sep 20, 2026	201-500	101 contacts →
	Partial evidence “Our mission is to be the keystone species in the restoration of the Chesapeake Bay.” Source: RevenueBase Database · checked Sep 20, 2026
22	ONE Tree Planted	Indirect evidence	Shelburne, VT, United StatesHQ checked Sep 20, 2026	51-200	97 contacts →
	Indirect evidence “Since 2014, One Tree Planted has been dedicated to global reforestation.” Source: RevenueBase Database · checked Sep 20, 2026
23	Save The Redwoods League	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 20, 2026	51-200	95 contacts →
	Indirect evidence “Save the Redwoods is helping shape the future of California’s redwood forests.” Source: RevenueBase Database · checked Sep 20, 2026
24	Urban Ecology Center	Indirect evidence	Milwaukee, WI, United StatesHQ checked Sep 20, 2026	51-200	93 contacts →
	Indirect evidence “Our vision is to inspire generations to build environmental curiosity, understanding, and respect.” Source: RevenueBase Database · checked Sep 20, 2026
25	Earthcorps	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 20, 2026	11-50	83 contacts →
	Indirect evidence “EarthCorps cultivates leaders and community partnerships to advance environmental justice.” Source: RevenueBase Database · checked Sep 20, 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: habitat restoration nonprofits. 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 habitat restoration nonprofits.
Partial evidence: Its own public description names part of habitat restoration nonprofits, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name habitat restoration nonprofits. 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 1,122 habitat restoration nonprofits based in the United States

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Habitat restoration nonprofits based in the United States at a glance

As of Sep 20, 2026

36.4%Verified-email coverage

21.6Average contacts per company

1-10Median size (employees)

1.5%Largest-city concentration · Portland

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

768

11-50

269

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 1,122 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 habitat restoration nonprofits, 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 the United States whose own description of what they do matches “habitat restoration nonprofits”. 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 habitat restoration nonprofits), 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 habitat restoration nonprofits, and records with no verified work email. Companies headquartered outside United States 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, 8,819 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 20, 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.

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 habitat restoration nonprofits, 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 habitat restoration nonprofits are there based in the United States?

RevenueBase identified 1,122 habitat restoration nonprofits headquartered in the 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?

The Nature Conservancy, headquartered in Arlington, tops this list with the largest team on record.

Which city has the most habitat restoration nonprofits?

Portland leads with 17 headquartered companies, followed by New York (16) and Atlanta (15).

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 8,819 verified decision-maker contacts tracked across these 1,122 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 20, 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.