Largest Environment Charities in United States 2026
Discover the the biggest environment organizations by annual revenue in United States.
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Charities in United States
Nature Conservancy
United StatesEIN: 530242652 · Arlington, VA · Environment
$1,290,130,840
Income
$908,626,330 spent
1%
Programs
New Venture Fund
United StatesEIN: 205806345 · Washington, DC · Environment
$662,364,100
Income
$723,042,837 spent
0%
Programs
Center for Sustainable Energy
United StatesEIN: 330936366 · San Diego, CA · Environment
$502,947,923
Income
$500,921,594 spent
Calstart Inc
United StatesEIN: 954375022 · Pasadena, CA · Environment
$396,843,381
Income
$396,633,689 spent
World Wildlife Fund Inc
United StatesEIN: 521693387 · Washington, DC · Environment
$374,807,108
Income
$361,352,195 spent
1%
Programs
The Conservation Fund a Nonprofit Corporation
United StatesEIN: 521388917 · Reg: 52-1388917 · Arlington, VA · Environment
$373,233,308
Income
$356,216,753 spent
0%
Programs
Conservation International Foundation
United StatesEIN: 521497470 · Arlington, VA · Environment
$308,673,004
Income
$316,690,413 spent
0%
Programs
Windward Fund
United StatesEIN: 473522162 · Washington, DC · Environment
$308,245,754
Income
$251,319,552 spent
Environmental Defense Fund Incorporated
United StatesEIN: 116107128 · New York, NY · Environment
$298,689,286
Income
$295,808,792 spent
0%
Programs
National Park Foundation
United StatesEIN: 521086761 · Washington, DC · Environment
$275,087,903
Income
$136,658,850 spent
1%
Programs
Natural Resources Defense Council Inc
United StatesEIN: 132654926 · New York, NY · Environment
$273,728,385
Income
$182,068,155 spent
1%
Programs
Iso New England Inc
United StatesEIN: 043372500 · Holyoke, MA · Environment
$264,594,190
Income
$264,594,190 spent
Energy Trust of Oregon Inc
United StatesEIN: 931313663 · Portland, OR · Environment
$251,243,122
Income
$288,851,544 spent
Rockefeller Foundation
United StatesEIN: 131659629 · New York, NY · Environment
$238,147,048
Income
$460,190,655 spent
Ducks Unlimited Inc
United StatesEIN: 135643799 · Memphis, TN · Environment
$215,328,335
Income
$220,439,350 spent
0%
Programs
Climate Imperative Foundation
United StatesEIN: 845024713 · San Francisco, CA · Environment
$206,658,028
Income
$271,024,025 spent
Singing River Gulfport
United StatesEIN: 851538878 · Gautier, MS · Environment
$192,836,417
Income
$177,262,422 spent
National Audubon Society Inc
United StatesEIN: 131624102 · New York, NY · Environment
$171,155,404
Income
$123,432,721 spent
2%
Programs
Trust for Public Land
United StatesEIN: 237222333 · San Francisco, CA · Environment
$144,472,811
Income
$117,599,640 spent
1%
Programs
Vermont Energy Investment Corp
United StatesEIN: 030304418 · Winooski, VT · Environment
$130,939,426
Income
$131,141,340 spent
Wetlands America Trust Inc
United StatesEIN: 363330394 · Memphis, TN · Environment
$123,361,647
Income
$105,070,977 spent
Rocky Mountain Institute
United StatesEIN: 742244146 · Boulder, CO · Environment
$115,107,316
Income
$66,413,297 spent
Earthjustice
United StatesEIN: 941730465 · San Francisco, CA · Environment
$114,892,586
Income
$106,826,323 spent
0%
Programs
National Arbor Day Foundation
United StatesEIN: 237169265 · Lincoln, NE · Environment
$111,866,996
Income
$104,506,085 spent
New York Botanical Garden
United StatesEIN: 131693134 · Bronx, NY · Environment
$110,423,117
Income
$102,037,927 spent
0%
Programs
Sierra Club Foundation
United StatesEIN: 946069890 · Oakland, CA · Environment
$108,188,731
Income
$102,142,815 spent
City of Oaks Foundation Inc
United StatesEIN: 274467111 · Raleigh, NC · Environment
$105,214,776
Income
$288,902 spent
Thanksgiving Point Institute Inc
United StatesEIN: 841416158 · Lehi, UT · Environment
$99,872,507
Income
$37,802,487 spent
Social and Environmental Entrepreneurs Inc
United StatesEIN: 954116679 · Calabasas, CA · Environment
$94,599,962
Income
$82,017,260 spent
Urban Land Institute
United StatesEIN: 530159845 · Washington, DC · Environment
$93,109,056
Income
$97,982,052 spent
Environmental Charities
Environmental charities protect natural resources, combat climate change, preserve biodiversity, and promote sustainable practices. These organizations range from local conservation groups to global advocacy networks. Their work includes wildlife protection, ocean conservation, reforestation, clean energy advocacy, and environmental education.
GiveRadar indexes environmental nonprofits globally with financial data and trust scores. Search and filter to discover environmental organizations by country, size, and impact area.