Company lists · Data refreshed November 2026

Top 25 Conservation education nonprofits based in the United States

RevenueBase identified 1,718 company matches for conservation education nonprofits associated with the United States as of November 2026 and tracks 35,519 professional contacts across them, including 11,651 with verified work emails. New York is the largest hub.

This list covers company matches for conservation education nonprofits 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 November 6, 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 Nov 6, 2026 How this list was built
1,718Companies
35,519Contacts tracked
11,651Verified emails
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The 25 largest conservation education nonprofits based in the United States

Ranked by team size
Top 25 of 1,718 company matches for conservation education nonprofits based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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, NC, United StatesHQ recorded Nov 6, 20265,001-10,0006,991 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchArlington, VA, United StatesHQ recorded Nov 6, 2026501-1,0001,622 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 · Nov 6, 2026 · View company records in RevenueBase
3Exact matchArlington, WA, United StatesHQ recorded Nov 6, 2026201-500880 contacts →

Exact match

“The Student Conservation Association (SCA) is the largest provider of hands-on environmental conservation programs for youth and adults.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchReston, VA, United StatesHQ recorded Nov 6, 2026201-500622 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 · Nov 6, 2026 · View company records in RevenueBase
5Exact matchLincoln, MA, United StatesHQ recorded Nov 6, 2026201-500575 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchFlagstaff, AZ, United StatesHQ recorded Nov 6, 202651-200575 contacts →

Exact match

“American Conservation Experience (ACE) is a national nonprofit conservation corps that recruits, trains, and mobilizes over young adults and emerging professionals annually to…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchNew Orleans, LA, United StatesHQ recorded Nov 6, 2026201-500438 contacts →

Exact match

“Audubon Nature Institute is a unique private, not-for-profit organization with an expansive collection of world-class attractions, conservation programs, facilities and wilderness…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchBoston, MA, United StatesHQ recorded Nov 6, 2026201-500430 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 · Nov 6, 2026 · View company records in RevenueBase
9Exact matchArlington, VA, United StatesHQ recorded Nov 6, 202651-200396 contacts →

Exact match

“Rare is a global leader in driving social change for people and nature.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchRoyal Oak, MI, United StatesHQ recorded Nov 6, 2026201-500389 contacts →

Exact match

“The Detroit Zoological Society (DZS) is a nonprofit organization that operates the Detroit Zoo in Royal Oak, Mich.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchDurango, CO, United StatesHQ recorded Nov 6, 202651-200258 contacts →

Exact match

“Conservation Legacy is a national organization dedicated to supporting locally based conservation service programs.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchBozeman, MT, United StatesHQ recorded Nov 6, 2026n/a244 contacts →

Exact match

“Montana Conservation Corps is a nonprofit organization whose mission is to inspire young people, through hands-on conservation service to be leaders, stewards of the land, and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchArlington, VA, United StatesHQ recorded Nov 6, 2026201-500238 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 · Nov 6, 2026 · View company records in RevenueBase
14Exact matchGloucester, MA, United StatesHQ recorded Nov 6, 202651-200237 contacts →

Exact match

“Seaside Sustainability is a nationally recognized, award-winning 501(c)3 charitable organization dedicated to community engagement, education and environmental conservation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchSt. Paul, IA, United StatesHQ recorded Nov 6, 2026201-500218 contacts →

Exact match

“At Conservation Corps Minnesota & Iowa, youth and young adults grow as environmental stewards and leaders while giving back to the community through meaningful service.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchSausalito, CA, United StatesHQ recorded Nov 6, 2026201-500186 contacts →

Exact match

“Environmental science in nature’s classroom NatureBridge provides hands-on environmental science programs for young people.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchGrand Rapids, MI, United StatesHQ recorded Nov 6, 202651-200178 contacts →

Exact match

“John Ball Zoo is a 501(c)(3) nonprofit corporation committed to the advancement of public education on the need for wildlife conservation and preservation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchKirtland, OH, United StatesHQ recorded Nov 6, 202651-200168 contacts →

Exact match

“Holden Forests & Gardens is made up of two of Northeast Ohio’s most important environmental and cultural institutions, the Holden Arboretum and Cleveland Botanical Garden, whose…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchWashington, DC, United StatesHQ recorded Nov 6, 202651-200162 contacts →

Exact match

“The National Park Foundation works to protect wildlife and park lands, preserve history and culture, educate and engage youth, and connect people everywhere to the wonder of parks.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchBeverly, MA, United StatesHQ recorded Nov 6, 202651-200145 contacts →

Exact match

“The School for Field Studies (SFS) is a unique 501c3 nonprofit academic institution headquartered in Beverly, MA.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchLos Angeles, CA, United StatesHQ recorded Nov 6, 202651-200140 contacts →

Exact match

“The primary mission of the LA Conservation Corps is to provide at-risk young adults and school-aged youth with opportunities for success by providing them with job skills…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchHonolulu, HI, United StatesHQ recorded Nov 6, 202651-200132 contacts →

Exact match

“Much like the Kupukupu Fern, which is one of the first plants to bring life back to the land after a devastating lava flow, Kupu’s heart is to bring life back to the people, land…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchBainbridge Island, WA, United StatesHQ recorded Nov 6, 202651-200127 contacts →

Exact match

“IslandWood is an environmental education nonprofit.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchDurango, CO, United StatesHQ recorded Nov 6, 202611-50126 contacts →

Exact match

“Empowering individuals to positively impact their lives, their communities and the environment, Southwest Conservation Corps (SCC) operates conservation service programs across…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchJackson, WY, United StatesHQ recorded Nov 6, 202651-200124 contacts →

Exact match

“Teton Science Schools connects people, place, and nature through education.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 1,718 conservation education nonprofits based in the United States

See the full list, filter by size, metro and specialty, and access 11,651 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Conservation education nonprofits based in the United States at a glance

As of Nov 6, 2026
32.8%Verified-email coverage
20.7Average contacts per company
1-10Median size (employees)
2.3%Largest-city concentration · New York
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
1,140
11-50
437
51-200
99
201-500
18
501-1,000
6
1,001-5,000
4
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 1,718 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 “conservation education nonprofits” 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 11,651 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 November 6, 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 “conservation education nonprofits”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many conservation education nonprofits are there based in the United States?

RevenueBase identified 1,718 company matches for conservation education nonprofits associated with the United States as of November 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 conservation education nonprofits?

New York leads with 39 company records, followed by Washington (27) and Los Angeles (24).

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 11,651 professional contacts with verified work emails tracked across these 1,718 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 November 6, 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.