Company lists · Data refreshed September 2026

Top 25 Biodiversity conservation organizations based in the United States

RevenueBase identified 482 company matches for biodiversity conservation organizations associated with the United States as of September 2026 and tracks 22,373 professional contacts across them, including 7,343 with verified work emails. Washington is the largest hub.

This list covers company matches for biodiversity conservation 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
482Companies
22,373Contacts tracked
7,343Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest biodiversity conservation organizations based in the United States

Ranked by team size
Top 25 of 482 company matches for biodiversity conservation 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchArlington, VA, United StatesHQ recorded Sep 19, 20265,001-10,0006,526 contacts →

Exact match

“Air, water, food, shelter, income: nature sustains every aspect of our lives.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
2Exact matchBronx, NY, United StatesHQ recorded Sep 19, 20261,001-5,0003,663 contacts →

Exact match

“WCS stands for wildlife and wild places.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3Exact matchArlington, VA, United StatesHQ recorded Sep 19, 2026501-1,0001,560 contacts →

Exact match

“Since 1987, Conservation International has worked to spotlight and secure the critical benefits that nature provides to humanity.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4Exact matchWashington, DC, United StatesHQ recorded Sep 19, 20261,001-5,0001,290 contacts →

Exact match

“Our planet faces many big conservation challenges.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5Exact matchReston, VA, United StatesHQ recorded Sep 19, 2026201-500585 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
6Exact matchLincoln, MA, United StatesHQ recorded Sep 19, 2026201-500554 contacts →

Exact match

“Mass Audubon is the largest nature-based conservation organization in New England.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7Exact matchWashington, DC, United StatesHQ recorded Sep 19, 202651-200252 contacts →

Exact match

“The National Fish and Wildlife Foundation (NFWF) works with partners to foster sustainable and impactful conservation solutions so that people and nature thrive together.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8Exact matchArlington, VA, United StatesHQ recorded Sep 19, 2026201-500224 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
9Exact matchTucson, AZ, United StatesHQ recorded Sep 19, 202651-200219 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10Exact matchWashington, DC, United StatesHQ recorded Sep 19, 202651-200202 contacts →

Exact match

“Defenders of Wildlife is dedicated to the protection of all native animals and plants in their natural communities.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11Exact matchMill Valley, CA, United StatesHQ recorded Sep 19, 2026201-500188 contacts →

Exact match

“Wildlife Works is a community-centered wildlife conservation company that implements market-based initiatives to protect the planet’s threatened wilderness and endangered wildlife.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
12Exact matchPetaluma, CA, United StatesHQ recorded Sep 19, 202651-200160 contacts →

Exact match

“Point Blue Conservation Science (Point Blue) is dedicated to conserving birds, other wildlife, and ecosystems through innovative scientific research, restoration, outreach and…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13Exact matchMenlo Park, CA, United StatesHQ recorded Sep 19, 202651-200152 contacts →

Exact match

“Mongabay.com publishes news and information on tropical forests and related topics.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14Exact matchThe Plains, VA, United StatesHQ recorded Sep 19, 202651-200120 contacts →

Exact match

“American Bird Conservancy (ABC) takes bold action to conserve wild birds and their habitats throughout the Americas.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15Exact matchMissoula, MT, United StatesHQ recorded Sep 19, 202651-200105 contacts →

Exact match

“EPI is a non-profit organization dedicated to developing place-based, ecological education partnerships between local experts and high school students to address critical…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
16Exact matchCumberland, OH, United StatesHQ recorded Sep 19, 202651-20088 contacts →

Exact match

“At The Wilds, our mission is simple but powerful: Empowering People.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17Exact matchGlen Ellen, CA, United StatesHQ recorded Sep 19, 202611-5085 contacts →

Exact match

“Marine Conservation Institute is a team of highly-experienced marine scientists and environmental policy advocates dedicated to saving ocean life for us and future generations.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18Exact matchGlen Rose, TX, United StatesHQ recorded Sep 19, 202651-20084 contacts →

Exact match

“Fossil Rim Wildlife Center is dedicated to the conservation of species in peril, conducting scientific research, training of professionals.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19Exact matchMilwaukee, WI, United StatesHQ recorded Sep 19, 202651-20083 contacts →

Exact match

“The Zoological Society of Milwaukee's mission is to conserve wildlife and endangered species, educate people about the importance of wildlife and the environment, and support the…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20Exact matchWashington, DC, United StatesHQ recorded Sep 19, 202611-5076 contacts →

Exact match

“Forest Trends works to conserve forests and other ecosystems through the creation and wide adoption of a range of environmental finance, market, and other payment and incentive…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21Exact matchPortland, OR, United StatesHQ recorded Sep 19, 202651-20074 contacts →

Exact match

“We are an international nonprofit organization established in 1971, based in Portland, Oregon, with staff located in 16 different states.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
22Exact matchWashington, DC, United StatesHQ recorded Sep 19, 202611-5070 contacts →

Exact match

“For almost 35 years, the Society for Conservation Biology (SCB) has proudly served as the premier international organization of professionals and students who dedicate their work…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
23Exact matchDel Mar, CA, United StatesHQ recorded Sep 19, 202651-20070 contacts →

Exact match

“Nature and Culture International conserves biologically diverse landscapes in Latin America, in partnership with local people, for the planet's well-being.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
24Exact matchWashington, DC, United StatesHQ recorded Sep 19, 202611-5069 contacts →

Exact match

“Conservation Strategy Fund (CSF) sustains natural ecosystems and human communities through strategies powered by conservation economics.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
25Exact matchSouthfield, MI, United StatesHQ recorded Sep 19, 2026501-1,00068 contacts →

Exact match

“Akashinga delivers resilient nature conservation programmes of global significance through community-driven partnerships.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase

Showing 25 of 482 biodiversity conservation organizations based in the United States

See the full list, filter by size, metro and specialty, and access 7,343 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Biodiversity conservation organizations based in the United States at a glance

As of Sep 19, 2026
32.8%Verified-email coverage
46.4Average contacts per company
1-10Median size (employees)
5.2%Largest-city concentration · Washington
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
330
11-50
99
51-200
31
201-500
10
501-1,000
3
1,001-5,000
3
5,001-10,000
1
10001+
1

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 482 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 “biodiversity conservation 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 7,343 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 “biodiversity conservation organizations”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many biodiversity conservation organizations are there based in the United States?

RevenueBase identified 482 company matches for biodiversity conservation 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?

The Nature Conservancy tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most biodiversity conservation organizations?

Washington leads with 25 company records, followed by New York (16) and San Francisco (15).

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 7,343 professional contacts with verified work emails tracked across these 482 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.

Ready to reach these companies? Verified emails and direct dials for all 482 biodiversity conservation organizations based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

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.