Data / Nonprofits / District of Columbia / Environment
Environment nonprofits in District of Columbia: 375 registered with the IRS
375 environment nonprofits are registered with the IRS in District of Columbia, 327 of them 501(c)(3) charities; the 243 that report revenue took in $3.56 billion. The most are in Washington (372), Washington DC (2), District of Columbia (1). The largest by revenue: New Venture Fund ($662.4 million), World Wildlife Fund Inc ($366.7 million), Windward Fund ($308.2 million).
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Every organization, largest by revenue first
| Organization | City | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|---|
| New Venture Fund | Washington | 501(c)(3) | 2007 | $662.4 million | $624.9 million | 2024-12 |
| World Wildlife Fund Inc | Washington | 501(c)(3) | 1991 | $366.7 million | $777.3 million | 2025-06 |
| Windward Fund | Washington | 501(c)(3) | 2015 | $308.2 million | $432.7 million | 2024-12 |
| Sixteen Thirty Fund | Washington | 501(c)(4) | 2009 | $282.2 million | $106.5 million | 2024-12 |
| Urban Land Institute | Washington | 501(c)(3) | 1941 | $92.3 million | $93.4 million | 2025-06 |
| Climate Power | Washington | 501(c)(4) | 2024 | $79.4 million | $1.4 million | 2024-12 |
| Paintcare Inc | Washington | 501(c)(3) | 2011 | $77.1 million | $90.7 million | 2025-12 |
| League of Conservation Voters Education Fund | Washington | 501(c)(3) | 1985 | $75.2 million | $37.2 million | 2024-12 |
| American Rivers Inc | Washington | 501(c)(3) | 1984 | $53.4 million | $40.1 million | 2025-06 |
| National Parks Conservation Association | Washington | 501(c)(3) | 1959 | $51.6 million | $73.9 million | 2025-06 |
| U S Green Building Council Inc | Washington | 501(c)(3) | 2003 | $50.3 million | $40 million | 2024-12 |
| Ocean Conservancy Inc | Washington | 501(c)(3) | 1972 | $48.8 million | $97.9 million | 2025-06 |
| Great Barrier Reef Foundation USA Inc | Washington | 501(c)(3) | 2019 | $47.8 million | $28.7 million | 2025-06 |
| Bess Rural Energy Cooperative Lca | Washington | 501(c)(12) | 2025 | $43.5 million | $351.6 million | 2025-12 |
| The Recycling Partnership Inc | Washington | 501(c)(3) | 2012 | $41.2 million | $46.1 million | 2024-12 |
| Wilderness Society | Washington | 501(c)(3) | 1942 | $38.3 million | $127.1 million | 2025-09 |
| Rewiring America Inc | Washington | 501(c)(3) | 2024 | $37.6 million | $17.4 million | 2024-12 |
| Earthshare | Washington | 501(c)(3) | 1988 | $37.3 million | $38.9 million | 2025-06 |
| American Forests | Washington | 501(c)(3) | 1943 | $35.6 million | $17 million | 2025-09 |
| Clean Future Forum Inc | Washington | 501(c)(3) | 2020 | $35.4 million | $20 million | 2025-06 |
| Oceana Inc | Washington | 501(c)(3) | 2000 | $34.7 million | $62.2 million | 2024-12 |
| Verra | Washington | 501(c)(3) | 2015 | $30.6 million | $26.8 million | 2025-12 |
| Climate and Clean Energy Equity Fund | Washington | 501(c)(3) | 2022 | $29.5 million | $52.6 million | 2024-12 |
| Partnership Project Inc | Washington | 501(c)(3) | 2000 | $29.2 million | $29.8 million | 2024-12 |
| Clasp | Washington | 501(c)(3) | 2006 | $28.9 million | $23.6 million | 2024-12 |
| Clearpath Inc | Washington | 501(c)(3) | 2018 | $26.6 million | $24.4 million | 2025-12 |
| Greenpeace Fund Inc | Washington | 501(c)(3) | 1979 | $26.3 million | $43 million | 2024-12 |
| Coalition for Green Capital | Washington | 501(c)(3) | 2014 | $24.3 million | $5.02 billion | 2024-12 |
| Land Trust Alliance Incorporated | Washington | 501(c)(3) | 1982 | $22.4 million | $24.7 million | 2024-12 |
| International Council On Clean Transportation | Washington | 501(c)(3) | 2016 | $22.3 million | $25.4 million | 2024-12 |
| The Alliance for Climate Protection | Washington | 501(c)(3) | 2006 | $21.1 million | $19.9 million | 2025-12 |
| Friends of the Earth | Washington | 501(c)(3) | 1974 | $20.4 million | $24.1 million | 2025-06 |
| American Forest Foundation | Washington | 501(c)(3) | 1994 | $20.3 million | $157.8 million | 2024-12 |
| Clean Future Action Fund | Washington | 501(c)(4) | 2020 | $20.2 million | $6.7 million | 2025-06 |
| Smart Electric Power Alliance | Washington | 501(c)(3) | 2007 | $19.9 million | $39.5 million | 2024-12 |
| National Association of Conservation Districts Inc | Washington | 501(c)(3) | 1950 | $19.3 million | $4.5 million | 2025-09 |
| Global Fishing Watch Inc | Washington | 501(c)(3) | 2017 | $19.1 million | $64.1 million | 2025-12 |
| Center for Climate and Energy Solutions Inc | Washington | 501(c)(3) | 1998 | $18.7 million | $29.7 million | 2025-03 |
| American Council for An Energy Efficient Economy | Washington | 501(c)(3) | 1981 | $17.3 million | $21.8 million | 2025-12 |
| Environmental Working Group | Washington | 501(c)(3) | 1999 | $16.4 million | $23.7 million | 2025-12 |
| Resources for the Future Inc | Washington | 501(c)(3) | 1984 | $15.5 million | $81.1 million | 2025-09 |
| Clean Economy Project Inc | Washington | 501(c)(4) | 2026 | $15.3 million | $7.9 million | 2025-12 |
| Alliance for Tribal Clean Energy Inc | Washington | 501(c)(3) | 2023 | $15.2 million | $14.5 million | 2025-06 |
| Efi Foundation | Washington | 501(c)(3) | 2022 | $14 million | $5.2 million | 2024-12 |
| Solar United Neighbors | Washington | 501(c)(3) | 2014 | $13.7 million | $11.7 million | 2024-12 |
| Ocean Risk and Resilience Action Alliance Inc | Washington | 501(c)(3) | 2019 | $13.6 million | $6 million | 2025-12 |
| Sustainable Forestry Initiative Inc | Washington | 501(c)(3) | 2018 | $13.5 million | $12.9 million | 2024-12 |
| Friends of the Osa | Washington | 501(c)(3) | 2003 | $13.4 million | $25.6 million | 2024-12 |
| Rails To Trails Conservancy | Washington | 501(c)(3) | 1986 | $13.3 million | $23 million | 2025-09 |
| Ocean Foundation | Washington | 501(c)(3) | 2002 | $13.2 million | $17.7 million | 2025-06 |
| Climate Equity Action Fund | Washington | 501(c)(4) | 2024 | $11.6 million | $4.3 million | 2024-12 |
| Climate Power Education Fund | Washington | 501(c)(3) | 2023 | $11.5 million | $537,391 | 2024-12 |
| Casey Trees | Washington | 501(c)(3) | 2004 | $11 million | $208 million | 2025-06 |
| Regulatory Assistance Project | Washington | 501(c)(3) | 1992 | $10 million | $10.8 million | 2024-12 |
| Center for Climate Integrity | Washington | 501(c)(3) | 2017 | $9.9 million | $9.1 million | 2025-12 |
| Mobilizegreen Inc | Washington | 501(c)(3) | 2013 | $9.9 million | $3 million | 2024-12 |
| Mission Possible Partnership USA Inc | Washington | 501(c)(3) | 2022 | $9.7 million | $4.8 million | 2025-06 |
| Advanced Energy Institute | Washington | 501(c)(3) | 2009 | $8.6 million | $17 million | 2024-12 |
| Groundswell Inc | Washington | 501(c)(3) | 2010 | $8.6 million | $6.1 million | 2024-12 |
| Natural State LTD | Washington | 501(c)(3) | 2025 | $8.2 million | $8.3 million | 2024-12 |
| Restore Americas Estuaries | Washington | 501(c)(3) | 2000 | $8.1 million | $3.1 million | 2024-12 |
| Evergreen Collaborative | Washington | 501(c)(3) | 2021 | $8 million | $6.9 million | 2024-12 |
| Justice Climate Fund Inc | Washington | 501(c)(3) | 2023 | $8 million | $966.5 million | 2025-09 |
| U S Water Alliance | Washington | 501(c)(3) | 2008 | $7.9 million | $6 million | 2025-09 |
| Ce Buyers Institute | Washington | 501(c)(3) | 2020 | $7.9 million | $5.3 million | 2024-12 |
| Ecological Society of America Inc | Washington | 501(c)(3) | 1978 | $7.7 million | $15.6 million | 2025-06 |
| Citizens for Responsible Energy Solutions Forum | Washington | 501(c)(3) | 2015 | $7.6 million | $3.4 million | 2025-06 |
| American Conservation Coalition Inc | Washington | 501(c)(3) | 2018 | $7.4 million | $3.8 million | 2025-12 |
| North American Association for Environmental Education | Washington | 501(c)(3) | 1982 | $7.4 million | $8.7 million | 2024-12 |
| Mighty Earth Inc | Washington | 501(c)(3) | 2020 | $7.3 million | $3.1 million | 2024-12 |
| Smart Growth America | Washington | 501(c)(3) | 2003 | $7.2 million | $8.7 million | 2025-06 |
| Environmental Law Institute Inc | Washington | 501(c)(3) | 1970 | $7.2 million | $10.4 million | 2024-12 |
| Rights and Resources Institute Inc | Washington | 501(c)(3) | 2006 | $7.2 million | $49.5 million | 2024-12 |
| Partnership Project Action Fund | Washington | 501(c)(4) | 2006 | $7.1 million | $13.2 million | 2024-12 |
| Clean Economy Fund | Washington | 501(c)(3) | 2023 | $7 million | $2.8 million | 2025-12 |
| Environmental Integrity Project | Washington | 501(c)(3) | 2005 | $6.9 million | $4.7 million | 2024-12 |
| Coastal States Stewardship Foundation | Washington | 501(c)(3) | 2006 | $6.7 million | $1.7 million | 2024-12 |
| Institute for Market Transformation Inc | Washington | 501(c)(3) | 1998 | $6.5 million | $5.4 million | 2024-12 |
| Citizens for Responsible Energy Solutions Inc | Washington | 501(c)(4) | 2016 | $6.5 million | $6.2 million | 2025-06 |
| Earthjustice Action | Washington | 501(c)(4) | 2018 | $6.4 million | $5.1 million | 2025-06 |
| Clean Water Fund | Washington | 501(c)(3) | 1977 | $6.1 million | $5.7 million | 2024-12 |
| American Flood Coalition Inc | Washington | 501(c)(3) | 2019 | $6 million | $7.9 million | 2024-12 |
| Forest Trends Association | Washington | 501(c)(3) | 1999 | $6 million | $6.9 million | 2025-12 |
| Climate Resilience for All | Washington | 501(c)(3) | 2025 | $5.9 million | $2.8 million | 2025-12 |
| American Biogas Council | Washington | 501(c)(6) | 2012 | $5.9 million | $5.4 million | 2024-12 |
| Zero Emission Transportation Association | Washington | 501(c)(3) | 2021 | $5.6 million | $1.6 million | 2025-06 |
| International Conservation Caucus Foundation | Washington | 501(c)(3) | 2006 | $5.5 million | $2.4 million | 2025-12 |
| Conservation Innovation Fund | Washington | 501(c)(3) | 2020 | $5.3 million | $298,663 | 2025-06 |
| Bureau of Land Management Foundation | Washington | 501(c)(3) | 2023 | $5.1 million | $8.8 million | 2024-12 |
| Rewiring Community Investment Fund Inc | Washington | 501(c)(3) | 2024 | $5 million | $5 million | 2024-12 |
| Amazon Conservation Association | Washington | 501(c)(3) | 2000 | $4.8 million | $4.1 million | 2024-12 |
| Counterspark Inc | Washington | 501(c)(4) | 2009 | $4.7 million | $2.7 million | 2024-12 |
| Food & Water Action Fund | Washington | 501(c)(4) | 2005 | $4.7 million | $2 million | 2025-06 |
| Society for Conservation Biology | Washington | 501(c)(3) | 1992 | $4.2 million | $4.1 million | 2025-12 |
| Alaska Wilderness League | Washington | 501(c)(3) | 1993 | $4 million | $10.7 million | 2025-08 |
| Electrification Coalition Foundation | Washington | 501(c)(3) | 2010 | $4 million | $2.6 million | 2024-12 |
| Climate Leadership Council Inc | Washington | 501(c)(3) | 2016 | $4 million | $7.1 million | 2024-12 |
| Oo Project | Washington | 501(c)(3) | 2020 | $3.9 million | $4.4 million | 2025-06 |
| Environmental Protection Network | Washington | 501(c)(3) | 2017 | $3.8 million | $3.3 million | 2024-12 |
| Renewable Energy Wildlife Institute | Washington | 501(c)(3) | 2009 | $3.8 million | $6.5 million | 2024-12 |
| Delterra Inc | Washington | 501(c)(3) | 2021 | $3.7 million | $8.9 million | 2024-12 |
| Green Seal Inc | Washington | 501(c)(3) | 1991 | $3.7 million | $1.6 million | 2025-09 |
| Sunrise Movement Education Fund | Washington | 501(c)(3) | 2014 | $3.7 million | $10.2 million | 2024-12 |
| Society for Ecological Restoration Inc | Washington | 501(c)(3) | 1993 | $3.5 million | $2.5 million | 2024-12 |
| Center for Carbon Removal | Washington | 501(c)(3) | 2016 | $3.4 million | $17.7 million | 2025-12 |
| The National Environmental Education and Training Foundation | Washington | 501(c)(3) | 1991 | $3.4 million | $858,500 | 2025-09 |
| Earth Day Network Inc | Washington | 501(c)(3) | 1995 | $3.3 million | $13.3 million | 2024-12 |
| Greenlight America | Washington | 501(c)(3) | 2023 | $3.2 million | $1.9 million | 2024-12 |
| Friends of the National Arboretum Inc | Washington | 501(c)(3) | 1982 | $3.1 million | $4.4 million | 2024-12 |
| Inter Union for Conservation of Nature & Natural Resources Utd St | Washington | 501(c)(3) | 1986 | $3.1 million | $2.3 million | 2025-12 |
| Ecoamerica | Washington | 501(c)(3) | 2006 | $3 million | $4.3 million | 2024-12 |
| Waterways Council Inc | Washington | 501(c)(6) | 2005 | $2.9 million | $3.4 million | 2024-12 |
| National Wildlife Federation Action Fund | Washington | 501(c)(4) | 1990 | $2.7 million | $2.1 million | 2025-08 |
| Potomac Riverkeeper Inc | Washington | 501(c)(3) | 2000 | $2.6 million | $2.3 million | 2024-12 |
| Energy for Growth Hub | Washington | 501(c)(3) | 2019 | $2.6 million | $12.5 million | 2024-12 |
| Institute for Energy Research | Washington | 501(c)(3) | 1985 | $2.5 million | $2.9 million | 2025-12 |
| Water Finance Exchange Inc | Washington | 501(c)(3) | 2021 | $2.5 million | $3.8 million | 2025-12 |
| American Conservation Coalition Action Inc | Washington | 501(c)(4) | 2018 | $2.5 million | $2.2 million | 2025-12 |
| Ridgeline Center for Law and Policy | Washington | 501(c)(3) | 2020 | $2.4 million | $4.6 million | 2024-12 |
| Alliance for Just Deliberation On Solar Geoengineering Inc | Washington | 501(c)(3) | 2023 | $2.4 million | $2.8 million | 2025-12 |
| Americans for A Clean Energy Grid | Washington | 501(c)(3) | 2019 | $2.4 million | $1.5 million | 2024-12 |
| Alliance To Save Energy | Washington | 501(c)(3) | 1977 | $2.3 million | $1.4 million | 2024-12 |
| Environmental Research Institute of the States | Washington | 501(c)(3) | 1998 | $2.3 million | $2.1 million | 2025-09 |
| Gorail | Washington | 501(c)(4) | 2004 | $2.3 million | $564,309 | 2025-12 |
| Clean Energy Works | Washington | 501(c)(3) | 2014 | $2.2 million | $4.9 million | 2025-12 |
| Zero Emission Maritime Buyers Alliance | Washington | 501(c)(3) | 2023 | $2.2 million | $0 | 2025-12 |
| Global Sustainable Tourism Council | Washington | 501(c)(3) | 2014 | $2.2 million | $1.4 million | 2025-12 |
| Scenic America | Washington | 501(c)(3) | 1983 | $2.1 million | $2.6 million | 2025-03 |
| Island Press | Washington | 501(c)(3) | 1979 | $2.1 million | $1.5 million | 2025-12 |
| Greenlight Action | Washington | 501(c)(4) | 2024 | $2 million | $1.5 million | 2024-12 |
| Fusion Industry Association | Washington | 501(c)(6) | 2022 | $2 million | $283,450 | 2025-12 |
| Energy and Wildlife Action Coalition | Washington | 501(c)(6) | 2025 | $2 million | $646,847 | 2024-12 |
| Outdoor Alliance | Washington | 501(c)(3) | 2014 | $1.7 million | $1.3 million | 2025-12 |
| The Us Climate Action Network | Washington | 501(c)(3) | 2006 | $1.7 million | $4.3 million | 2025-06 |
| Sustainable Harvest International | Washington | 501(c)(3) | 2003 | $1.6 million | $921,422 | 2025-06 |
| National Association of Clean Air Agencies | Washington | 501(c)(3) | 2006 | $1.5 million | $1.5 million | 2025-09 |
| Solarapp Foundation | Washington | 501(c)(3) | 2022 | $1.5 million | $1.1 million | 2024-12 |
| Solar Electric Light Fund | Washington | 501(c)(3) | 1990 | $1.5 million | $812,912 | 2024-12 |
| Association of Clean Water Administrators | Washington | 501(c)(3) | 1987 | $1.5 million | $2.2 million | 2025-06 |
| Smart Surfaces Coalition | Washington | 501(c)(3) | 2019 | $1.5 million | $932,654 | 2025-12 |
| Land Trust Accreditation Commission | Washington | 501(c)(3) | 2007 | $1.5 million | $2.7 million | 2024-12 |
| Antarctic and Southern Ocean Coalition | Washington | 501(c)(3) | 1986 | $1.5 million | $1.4 million | 2025-06 |
| Conservative Climate Foundation Inc | Washington | 501(c)(3) | 2022 | $1.4 million | $685,814 | 2024-12 |
| Solar and Storage Industries Institute | Washington | 501(c)(3) | 2022 | $1.4 million | $1.6 million | 2024-12 |
| National Audubon Society Action Fund | Washington | 501(c)(4) | 2021 | $1.4 million | $1.8 million | 2025-06 |
| National Association of Railroad Passengers | Washington | 501(c)(3) | 1992 | $1.3 million | $1.3 million | 2025-12 |
| E3g Third Generation Environmentalism Inc | Washington | 501(c)(3) | 2013 | $1.3 million | $153,589 | 2024-12 |
| Pinchot Institute for Conservation | Washington | 501(c)(3) | 1995 | $1.2 million | $234,283 | 2024-12 |
| Beyond Pesticides | Washington | 501(c)(3) | 1985 | $1.2 million | $3.8 million | 2025-12 |
| Center for Progressive Reform Inc | Washington | 501(c)(3) | 2002 | $1.1 million | $993,885 | 2024-12 |
| Center for Clean Air Policy | Washington | 501(c)(3) | 1986 | $1.1 million | $1.9 million | 2025-06 |
| The Organic Center Inc | Washington | 501(c)(3) | 2002 | $1 million | $2.3 million | 2024-12 |
| American Common Ground Council Inc | Washington | 501(c)(3) | 2017 | $1 million | $884,662 | 2025-12 |
| National Bonsai Foundation Incorporated | Washington | 501(c)(3) | 1983 | $1 million | $2.4 million | 2025-12 |
| Clean Energy for America Education Fund | Washington | 501(c)(3) | 2022 | $962,300 | $552,002 | 2025-06 |
| Southern Group of Foresters Inc | Washington | 501(c)(3) | 2003 | $945,595 | $789,456 | 2025-09 |
| Northeast-Midwest State Foresters Alliance | Washington | 501(c)(3) | 2004 | $936,864 | $684,191 | 2025-09 |
| Anacostia Riverkeeper | Washington | 501(c)(3) | 2009 | $896,960 | $999,133 | 2024-12 |
| Energy Innovation Reform Project | Washington | 501(c)(3) | 2015 | $795,594 | $1.1 million | 2024-12 |
| Greater Washington Region Clean Cities Coalition | Washington | 501(c)(3) | 2023 | $795,069 | $92,867 | 2025-09 |
| Electric Drive Transportation Association | Washington | 501(c)(6) | 2002 | $769,710 | $645,457 | 2025-09 |
| National Conservation Foundation | Washington | 501(c)(3) | 2018 | $768,169 | $944,384 | 2025-09 |
| Students for Carbon Dividends Inc | Washington | 501(c)(3) | 2019 | $766,105 | $347,717 | 2024-12 |
| Openaq Inc | Washington | 501(c)(3) | 2018 | $747,665 | $551,035 | 2025-12 |
| Solar United Neighbors Action | Washington | 501(c)(4) | 2022 | $747,500 | $907,214 | 2024-12 |
| Tregaron Conservancy | Washington | 501(c)(3) | 2007 | $731,708 | $4.1 million | 2025-12 |
| Green 2 0 | Washington | 501(c)(3) | 2014 | $666,949 | $1.1 million | 2025-12 |
| Dumbarton Oaks Park Conservancy Inc | Washington | 501(c)(3) | 2011 | $666,137 | $747,591 | 2024-12 |
| Policy Action for A Clean Tomorrow Inc | Washington | 501(c)(3) | 2024 | $645,000 | $645,100 | 2025-06 |
| Ward 8 Woods Conservancy Inc | Washington | 501(c)(3) | 2019 | $620,493 | $277,339 | 2025-12 |
| Earth Conservation Corps | Washington | 501(c)(3) | 1990 | $599,671 | $962,095 | 2025-09 |
| Center for Responsible Travel | Washington | 501(c)(3) | 2007 | $585,466 | $50,092 | 2022-12 |
| Next 100 Syndicate | Washington | 501(c)(3) | 2022 | $570,781 | $1.1 million | 2025-12 |
| Solar Energy Manufacturers for America Coalition Inc | Washington | 501(c)(4) | 2024 | $548,899 | $167,318 | 2025-09 |
| Foundation Earth | Washington | 501(c)(3) | 2012 | $542,500 | $135,001 | 2024-12 |
| Circular Action Alliance | Washington | 501(c)(3) | 2023 | $537,186 | $44.8 million | 2024-12 |
| Forest Service International Foundation | Washington | 501(c)(3) | 2023 | $534,012 | $166,501 | 2024-12 |
| National Energy Assistance Directors Association | Washington | 501(c)(3) | 2003 | $528,238 | $124,191 | 2024-12 |
| Rural Investment To Protect Our Environment | Washington | 501(c)(3) | 2022 | $516,944 | $1.2 million | 2025-12 |
| Clean Hydrogen Future Coalition | Washington | 501(c)(6) | 2022 | $510,000 | $131,531 | 2025-12 |
| Partnership for the National Trails System | Washington | 501(c)(3) | 2003 | $506,575 | $176,551 | 2025-12 |
| Hyo Jeong International Foundation for the Unity of the Sciences | Washington | 501(c)(3) | 2017 | $495,535 | $85,043 | 2024-12 |
| National Energy Resources Organization Inc | Washington | 501(c)(3) | 1976 | $474,508 | $423,283 | 2024-12 |
| Alaska Wilderness League Action Inc | Washington | 501(c)(4) | 2004 | $454,686 | $704,311 | 2025-08 |
| Electrification Coalition Alliance Inc | Washington | 501(c)(4) | 2010 | $421,500 | $769,955 | 2024-12 |
| Efficiency Valuation Organization | Washington | 501(c)(3) | 2001 | $409,971 | $199,641 | 2025-12 |
| Environmental Design Research Association Inc | Washington | 501(c)(3) | 1979 | $409,765 | $896,140 | 2024-12 |
| Alliance for Pulp & Paper Technology Innovation | Washington | 501(c)(3) | 2013 | $399,350 | $577,278 | 2024-12 |
| Center for Climate Strategies | Washington | 501(c)(3) | 1999 | $358,854 | $142,267 | 2024-12 |
| Code4nature Inc | Washington | 501(c)(3) | 2018 | $349,036 | $11,433 | 2024-12 |
| Netcentric Campaigns Inc | Washington | 501(c)(3) | 2003 | $332,950 | $930,711 | 2024-12 |
| Clean Air Institute | Washington | 501(c)(3) | 2023 | $322,593 | $69,631 | 2023-12 |
| National Fish Habitat Fund Inc | Washington | 501(c)(3) | 2015 | $322,190 | $912,356 | 2025-12 |
| Manu | Washington | 501(c)(3) | 2022 | $320,429 | $268,746 | 2025-12 |
| Clean Energy for America Inc | Washington | 501(c)(4) | 2022 | $313,083 | $677,234 | 2025-06 |
| Cleaner Economy Coalition Inc | Washington | 501(c)(4) | 2026 | $300,004 | $228,026 | 2024-12 |
| Marine Debris Foundation | Washington | 501(c)(3) | 2023 | $299,905 | $119,750 | 2025-12 |
| Energy Equipment and Infrastructure Alliance | Washington | 501(c)(6) | 2013 | $290,500 | $104,753 | 2024-12 |
| The National Council for Science and the Environment | Washington | 501(c)(3) | 1991 | $266,252 | $172,398 | 2025-08 |
| Colibri Catalyst Inc | Washington | 501(c)(3) | 2024 | $250,000 | $35,879 | 2024-12 |
| Youth Learning As Citizen Environmental Scientists | Washington | 501(c)(3) | 2014 | $248,216 | $54,550 | 2024-12 |
| District of Columbia Green Spaces Alliance | Washington | 501(c)(3) | 2011 | $222,290 | $247,189 | 2024-12 |
| Sargasso Sea Project Inc | Washington | 501(c)(3) | 2010 | $215,301 | $163,464 | 2024-12 |
| Green Scheme | Washington | 501(c)(3) | 2011 | $212,917 | $20,872 | 2024-12 |
| Asga Fisheries Policy Alliance Inc | Washington | 501(c)(4) | 2021 | $206,330 | $313,515 | 2024-12 |
| National Fund for Us Botanic Garden | Washington | 501(c)(3) | 1991 | $203,285 | $428,729 | 2024-12 |
| Business Council for Sustainable Energy Foundation | Washington | 501(c)(3) | 2017 | $198,250 | $53,018 | 2024-12 |
| Earthshot Foundation | Washington | 501(c)(3) | 2025 | $192,736 | $40,071 | 2024-12 |
| Zenith Community Arts Foundation | Washington | 501(c)(3) | 2000 | $173,996 | $431,500 | 2024-12 |
| District of Columbia Green Spaces Alliance | Washington | 501(c)(3) | 2011 | $152,100 | $111,568 | 2025-12 |
| Earthworks Action Fund | Washington | 501(c)(4) | 2020 | $151,470 | $186,539 | 2025-12 |
| Rosedale Conservancy Inc | Washington | 501(c)(3) | 2002 | $151,217 | $5.8 million | 2025-11 |
| Reserva the Youth Land Trust LLC | Washington | 501(c)(3) | 2021 | $142,097 | $56,939 | 2024-12 |
| Center for Water Security and Cooperation | Washington | 501(c)(3) | 2015 | $135,215 | $88,988 | 2025-06 |
| National Parks Action Fund | Washington | 501(c)(4) | 2016 | $117,550 | $65,468 | 2025-06 |
| Seafood Harvesters of America | Washington | 501(c)(4) | 2014 | $114,570 | $134,683 | 2024-12 |
| Forestplanet Inc | Washington | 501(c)(3) | 2021 | $107,485 | $18,058 | 2024-12 |
| Conservania | Washington | 501(c)(3) | 2024 | $101,397 | $97,710 | 2025-12 |
| Global Carbon Management Foundation | Washington | 501(c)(3) | 2022 | $100,000 | $161,814 | 2025-06 |
| Transcaucasian Trail Association | Washington | 501(c)(3) | 2018 | $91,995 | $9,772 | 2024-12 |
| American Critical Minerals Association | Washington | 501(c)(4) | 2022 | $91,000 | $19,913 | 2025-12 |
| Recycling Research Foundation Inc | Washington | 501(c)(3) | 1984 | $85,763 | $370,367 | 2024-12 |
| Climate Equity Foundation | Washington | 501(c)(3) | 2024 | $79,500 | $1 | 2025-12 |
| National Waterways Foundation | Washington | 501(c)(3) | 1978 | $67,556 | $61,529 | 2024-12 |
| Georgetown Garden Club | Washington | 501(c)(3) | 1986 | $67,230 | $68,140 | 2025-06 |
| DC Natives | Washington | 501(c)(3) | 2017 | $55,104 | $185,570 | 2025-12 |
| Environmental Fund of Washington | Washington | 501(c)(3) | 1987 | $54,981 | $192,620 | 2025-06 |
| Black Landscape Architects Network | Washington | 501(c)(3) | 2021 | $53,502 | $70,733 | 2022-12 |
| National Capital Area Garden Clubs Inc | Washington | 501(c)(3) | 1956 | $52,250 | $1.5 million | 2025-07 |
| The National Association of State Foresters Foundation | Washington | 501(c)(3) | 2020 | $48,126 | $577,578 | 2025-09 |
| Fearless Fund | Washington | 501(c)(3) | 1999 | $40,000 | $198,561 | 2024-12 |
| New Columbia Community Land Trust Inc | Washington | 501(c)(3) | 1991 | $35,350 | $1.8 million | 2024-12 |
| Energy Programs Consortium | Washington | 501(c)(3) | 1999 | $30,005 | $105,356 | 2024-12 |
| Macarthur Beautification Group | Washington | 501(c)(3) | 2003 | $26,376 | $126,360 | 2025-12 |
| St Catherine Island Foundation Inc | Washington | 501(c)(3) | 2022 | $20,200 | $41,254 | 2024-12 |
| Friends of Fletchers Cove | Washington | 501(c)(3) | 2023 | $16,474 | $29,597 | 2025-10 |
| Oil Change USA | Washington | 501(c)(4) | 2017 | $15,369 | $41,715 | 2024-12 |
| Our Climate | Washington | 501(c)(4) | 2016 | $3,756 | $57,062 | 2023-12 |
| Peregrine Project | Washington | 501(c)(3) | 2025 | $3,000 | $3,600 | 2025-12 |
| The House of Green | Washington | 501(c)(3) | 2009 | $2,264 | $622 | 2025-12 |
| Earth Advocacy Institute Inc | Washington | 501(c)(3) | 2024 | $2,026 | $49,809 | 2024-12 |
| Climate Reality Action Fund | Washington | 501(c)(4) | 2009 | $1,355 | $21,374 | 2025-12 |
| Wyss Center for Innovation Inc | Washington | 501(c)(3) | 2014 | $735 | $13,249 | 2025-12 |
| 1 for 1 Foundation | Washington | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Acorn Outdoor Learning | Washington | 501(c)(3) | 2025 | |||
| Ageing in Place Resource Center Inc | Washington | 501(c)(3) | 1993 | $0 | $0 | 2025-12 |
| Alliance for Environmental Markets and Investments | Washington | 501(c)(3) | 2020 | $0 | $0 | 2025-12 |
| American Friends of Green Lebanon C Lub | Washington | 501(c)(3) | 2026 | |||
| American Society for Public Administration | Washington | 501(c)(3) | 1981 | $0 | $0 | 2025-12 |
| Applied Ecology for Tropical Resources Program Inc | Washington | 501(c)(3) | 2008 | $0 | $0 | 2025-12 |
| Atomic Heritage Foundation | Washington | 501(c)(3) | 2002 | $0 | $0 | 2025-12 |
| Bezos Earth Fund Foundation | Washington | 501(c)(3) | 2024 | $223,491 | 2024-12 | |
| Blair Road Community Garden Association | Washington | 501(c)(3) | 2023 | $0 | $0 | 2025-10 |
| Blue Ridge Valley Foundation Inc | Washington | 501(c)(3) | 2026 | |||
| CRT Group Foundation | Washington | 501(c)(3) | 2010 | $0 | $0 | 2025-12 |
| Capitol Hill Community Garden Land Trust | Washington | 501(c)(3) | 2000 | $0 | $0 | 2024-12 |
| Capitol Hill Garden Club Inc | Washington | 501(c)(3) | 2002 | $0 | $0 | 2025-12 |
| Carbon Capture Coalition Inc | Washington | 501(c)(4) | 2024 | $0 | $0 | 2025-12 |
| Carbon Markets Foundation | Washington | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Ccap Action Fund | Washington | 501(c)(4) | 2010 | $0 | $0 | 2025-06 |
| Center for Urban Sustainability Projects | Washington | 501(c)(3) | 2015 | $0 | $0 | 2024-12 |
| Clean Energy and Sustainability Accelerator | Washington | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| Cleanpeace | Washington | 501(c)(3) | 2013 | $0 | $0 | 2024-12 |
| Climate Advisers Trust | Washington | 501(c)(3) | 2020 | $0 | $0 | 2025-12 |
| Climate Classes Inc | Washington | 501(c)(3) | 2022 | $0 | $0 | 2026-02 |
| Climate Inc | Washington | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Climate Institute | Washington | 501(c)(3) | 1987 | $0 | $0 | 2024-12 |
| Climate Leadership Action | Washington | 501(c)(4) | 2026 | |||
| Climate Solutions Fund | Washington | 501(c)(3) | 2025 | |||
| Common Sense Mobility | Washington | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Council for the Advancement of Recycling Education and Sustainabi | Washington | 501(c)(3) | 2010 | |||
| DC Bird Alliance | Washington | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Dcarboniz | Washington | 501(c)(6) | 2025 | $0 | $0 | 2025-12 |
| Delterra International Inc | Washington | 501(c)(3) | 2018 | $58,940 | 2024-12 | |
| Democracyinactionorg Activism Services | Washington | 501(c)(3) | 2005 | |||
| District Coyote Project | Washington | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| District of Columbia Environmental Education Consortium | Washington | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| District of Columbia Green Space Alliance | Washington | 501(c)(3) | 2011 | |||
| District of Columbia Green Spaces Alliance | Washington | 501(c)(3) | 2011 | $0 | $0 | 2025-12 |
| District of Columbia Green Spaces Alliance | Washington | 501(c)(3) | 2011 | $0 | $0 | 2025-12 |
| District of Columbia Green Spaces Alliance | Washington | 501(c)(3) | 2011 | $0 | $0 | 2025-12 |
| District of Columbia Green Spaces Alliance | Washington | 501(c)(3) | 2011 | $0 | $0 | 2025-12 |
| Earth Council Foundation - Us | Washington | 501(c)(3) | 1990 | $0 | $0 | 2025-12 |
| Eco-Lore | Washington | 501(c)(3) | 2022 | $0 | $0 | 2024-12 |
| Ecologic | Washington | 501(c)(3) | 2020 | $0 | $0 | 2025-12 |
| Ecowomen | Washington | 501(c)(3) | 2011 | $0 | $0 | 2025-12 |
| Emeraldplanet International Foundation | Washington | 501(c)(3) | 2012 | $0 | $0 | 2025-12 |
| Endowment for Clean Oceans | Washington | 501(c)(3) | 2017 | $0 | $0 | 2024-12 |
| Energy Democracy Coalition Foundation | Washington | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Envirofest International | Washington | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| Environmental Support Fund | Washington | 501(c)(3) | 2009 | $0 | $1 | 2024-12 |
| Extinction Rebellion DC - | Washington | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| Fort Stevens Community Garden Association | Washington | 501(c)(7) | 2017 | $0 | $0 | 2025-12 |
| Foundation for Biodiversity Inc | Washington | 501(c)(3) | 2026 | |||
| Friends of Fort Stanton Community Garden | Washington | 501(c)(3) | 2025 | |||
| Friends of Kingman and Heritage Islands | Washington | 501(c)(3) | 2018 | $0 | $0 | 2024-12 |
| Friends of Montrose Park | Washington | 501(c)(3) | 2012 | $0 | $0 | 2025-12 |
| Friends of Petworth Park | Washington | 501(c)(3) | 2012 | $0 | $0 | 2024-03 |
| Friends of Theodore Roosevelt Island Inc | Washington | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Friends of the Book Hill Park | Washington | 501(c)(3) | 2001 | $0 | $0 | 2025-12 |
| Friends of the Tenth Street Park | Washington | 501(c)(3) | 2010 | $0 | $0 | 2025-12 |
| Gateway Research Institute | Washington DC | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| Georgetown Reuse | Washington | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Global Coalition for Lake Tana Restoration | Washington | 501(c)(3) | 2020 | $0 | $0 | 2025-12 |
| Goelectricdrive Foundation | Washington | 501(c)(3) | 2013 | $0 | $0 | 2025-09 |
| Greater Brookland Garden Club | Washington | 501(c)(3) | 2008 | $0 | $0 | 2025-12 |
| Green Field Community Garden | Washington | 501(c)(3) | 2025 | $0 | $0 | 2026-01 |
| Greenseed Community Garden Land Trust | Washington | 501(c)(3) | 2013 | $0 | $0 | 2024-12 |
| Greenunity Ukraine | Washington | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Grid Alternatives | Washington | 501(c)(3) | 2014 | 2023-12 | ||
| Guerrilla Gardeners of Washington DC | Washington | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Hill East Community Garden | Washington | 501(c)(3) | 2007 | $0 | $0 | 2025-12 |
| Illumi-Nation Global Inc | Washington | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| International Federation of Landscape Architects Americas Regi | Washington DC | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| International Science Foundation | Washington | 501(c)(3) | 2025 | |||
| Khumbu Research Center Charitable Foundation | Washington | 501(c)(3) | 2020 | $3,615 | 2023-12 | |
| Kingman Park Civic Association Environmental Project Inc | Washington | 501(c)(3) | 1998 | $1,636 | 2025-12 | |
| Laudato Si Movement | Washington | 501(c)(3) | 2018 | |||
| Lighthouse Energy Institute | Washington | 501(c)(3) | 2026 | |||
| Mamie D Lee Garden Association | Washington | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |
| Mycological Association of Washington Inc | Washington | 501(c)(3) | 2001 | $0 | $0 | 2025-12 |
| National Capital Region Section of the American Water Resources Assc | Washington | 501(c)(3) | 2011 | $0 | $0 | 2026-06 |
| National Center for Sustainable Development Inc | Washington | 501(c)(3) | 2001 | $0 | $0 | 2024-12 |
| National Inter-Tribal Energy Council Inc | Washington | 501(c)(6) | 2022 | $0 | $0 | 2025-12 |
| Net Zero | Washington | 501(c)(3) | 2020 | $0 | $0 | 2025-12 |
| Next Chapter Action | Washington | 501(c)(4) | 2014 | $0 | $944 | 2025-12 |
| North Lincoln Park Neighborhood Association | Washington | 501(c)(3) | 2002 | $0 | $0 | 2026-02 |
| Ocean Doctor Inc | Washington | 501(c)(3) | 2017 | $0 | $0 | 2024-09 |
| Ocean Lab Inc | Washington | 501(c)(3) | 2025 | |||
| Oceana Action Inc | Washington | 501(c)(4) | 2001 | $0 | $345,310 | 2024-12 |
| Onred | Washington | 501(c)(3) | 2024 | $0 | $0 | 2024-12 |
| Openvega Foundation | Washington | 501(c)(3) | 2025 | $0 | $0 | 2026-06 |
| Our Wildlife Habitat | Washington | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Pangea Coalition | Washington | 501(c)(3) | 2021 | $0 | $0 | 2024-12 |
| Parents for Nontoxic Alternatives | Washington | 501(c)(3) | 2004 | $0 | $0 | 2025-12 |
| Pathway To Freedom Inc | Washington | 501(c)(3) | 2013 | $0 | $0 | 2025-12 |
| Perennial Garden Club | Washington | 501(c)(3) | 1999 | $0 | $0 | 2025-06 |
| Planet Asap Inc | Washington | 501(c)(3) | 2026 | |||
| Plant Based Products Council Foundation | Washington | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| Plant4life | District of Columbia | 501(c)(3) | 2026 | $0 | $0 | 2021-12 |
| Potomac River Association Inc | Washington | 501(c)(3) | 2019 | $1 | 2025-12 | |
| Proeco Inc | Washington | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Renew Wild Foundation | Washington | 501(c)(3) | 2025 | $1 | 2024-12 | |
| Restore Mass Ave | Washington | 501(c)(3) | 2007 | $0 | $0 | 2025-12 |
| Rfutr Inc | Washington | 501(c)(3) | 2024 | |||
| Rock Creek Glen Community Assoc | Washington | 501(c)(4) | 2005 | $0 | $0 | 2025-12 |
| Runway To Green | Washington | 501(c)(3) | 2012 | $0 | $0 | 2025-12 |
| Save Americas Forests Fund Inc | Washington | 501(c)(3) | 1992 | $0 | $0 | 2023-12 |
| Save Americas Forests Inc | Washington | 501(c)(4) | 1999 | $0 | $0 | 2023-12 |
| Scenic Alabama Inc | Washington | 501(c)(3) | 1998 | $0 | $0 | 2025-12 |
| Scenic Georgia Inc | Washington | 501(c)(3) | 1999 | $0 | $0 | 2025-12 |
| Serova | Washington | 501(c)(3) | 2020 | $0 | $0 | 2024-12 |
| Simply Sustained | Washington | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Skala Financial Limited | Washington | 501(c)(3) | 2025 | |||
| Sovereign Earthworks | Washington | 501(c)(3) | 2024 | $0 | $1 | 2021-12 |
| Sustainable Waterfronts | Washington | 501(c)(3) | 2017 | $0 | $0 | 2024-12 |
| Swimmable Greene Acres | Washington | 501(c)(3) | 2024 | $0 | $0 | 2024-12 |
| Tenleytown Preservation Association | Washington | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| Textile Renewal Alliance | Washington | 501(c)(3) | 2026 | |||
| The Friends of Francis Field | Washington | 501(c)(3) | 2009 | $0 | $0 | 2025-12 |
| The Glover Project | Washington | 501(c)(3) | 2026 | |||
| Trees for Capitol Hill Inc | Washington | 501(c)(3) | 2001 | $0 | $0 | 2026-06 |
| Triangle Community Garden Land Trust | Washington | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Uproar Fund for Nature | Washington | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Us-Africa Agricultural Alliance Inc | Washington | 501(c)(3) | 2020 | $0 | $0 | 2025-12 |
| Verified Donations Inc | Washington | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| West End Dog Park | Washington | 501(c)(3) | 2017 | $0 | $0 | 2024-03 |
| Where Good Things Grow 501C3 Foundation | Washington | 501(c)(3) | 2024 | |||
| Womens Aquatic Network | Washington | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| World Foundation for Environment | Washington | 501(c)(3) | 1992 | |||
| Wrap Americas Inc | Washington | 501(c)(3) | 2024 | $0 | $0 | 2025-03 |
| Young Conservatives for Carbon Dividends Inc | Washington | 501(c)(4) | 2020 | $0 | $0 | 2024-12 |
| Young Professionals in Energy DC | Washington | 501(c)(3) | 2026 | |||
| Youth Arboriculture Career Experience | Washington | 501(c)(3) | 2024 | $1 | 2024-12 | |
| Zero Waste Jobs Inc | Washington | 501(c)(3) | 2021 | $0 | $0 | 2023-09 |
Every nonprofit in District of Columbia
Read from the IRS Exempt Organizations Business Master File, updated by the IRS on October 24, 2026 and rebuilt here every morning. Revenue and assets are from each organization's latest filing as the IRS lists it; the IRS record is the official one. Organizations only: no people are named on these pages.