Data / Nonprofits / Delaware / Environment
Environment nonprofits in Delaware: 149 registered with the IRS
149 environment nonprofits are registered with the IRS in Delaware, 149 of them 501(c)(3) charities; the 51 that report revenue took in $218 million. The most are in Wilmington (45), Dover (30), Newark (14). The largest by revenue: Sunrise Project Inc ($61.1 million), Sustainable Energy Utility Inc ($48.7 million), Climate Arc Inc ($44.4 million).
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Every organization, largest by revenue first
| Organization | City | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|---|
| Sunrise Project Inc | Wilmington | 501(c)(3) | 2022 | $61.1 million | $14 million | 2024-12 |
| Sustainable Energy Utility Inc | Dover | 501(c)(3) | 2009 | $48.7 million | $162.6 million | 2025-06 |
| Climate Arc Inc | Dover | 501(c)(3) | 2024 | $44.4 million | $30.5 million | 2024-12 |
| Building Decarbonization Coalition | Lewes | 501(c)(3) | 2021 | $15 million | $8.9 million | 2024-12 |
| WRLD Foundation | Wilmington | 501(c)(3) | 2022 | $11 million | $2 million | 2024-12 |
| Delaware Association of Conservation Districts | Dover | 501(c)(3) | 1994 | $6.7 million | $214,316 | 2025-12 |
| Partnership for the Delaware Estuary Inc | Wilmington | 501(c)(3) | 1996 | $4.6 million | $3.5 million | 2024-12 |
| Greater Lewes Foundation | Lewes | 501(c)(3) | 2000 | $4.3 million | $4.3 million | 2025-12 |
| Delaware Nature Society Inc | Hockessin | 501(c)(3) | 1965 | $4 million | $51.9 million | 2024-12 |
| American Public Gardens Association | Wilmington | 501(c)(3) | 1971 | $3.8 million | $1.2 million | 2025-12 |
| Center for the Inland Bays Inc | Rehoboth | 501(c)(3) | 1995 | $3.5 million | $2.9 million | 2025-09 |
| Delaware Center for Horticulture Inc | Wilmington | 501(c)(3) | 1980 | $1.4 million | $6.2 million | 2025-09 |
| Delaware Botanic Gardens Inc | Dagsboro | 501(c)(3) | 2012 | $1 million | $7.2 million | 2025-12 |
| Sussex Land Foundation Inc | Lewes | 501(c)(3) | 2018 | $974,175 | $9.8 million | 2025-12 |
| Nanticoke Watershed Alliance Inc | Seaford | 501(c)(3) | 1996 | $942,802 | $583,960 | 2025-12 |
| Community Resource Center Inc | Rehoboth BCH | 501(c)(3) | 2014 | $932,003 | $1.2 million | 2025-06 |
| Climate Catalyst Inc | Wilmington | 501(c)(3) | 2024 | $785,229 | $784,914 | 2024-12 |
| Nature Is Nonpartisan | Wilmington | 501(c)(3) | 2024 | $400,000 | $316,699 | 2024-12 |
| Brights Creek Conservancy Inc | Wilmington | 501(c)(3) | 2021 | $378,645 | $539,804 | 2025-12 |
| Harry C Green Residuary Trust Ua 01271993 | Wilmington | 501(c)(3) | 2008 | $373,338 | $7.9 million | 2025-12 |
| International Association for Vegetation Science Inc | Newark | 501(c)(3) | 2016 | $357,792 | $847,730 | 2025-12 |
| Sussex Health & Environmental Network | Selbyville | 501(c)(3) | 2023 | $314,297 | $91,465 | 2024-12 |
| Eco Plastic Products of Delaware Inc | Wilmington | 501(c)(3) | 2015 | $287,858 | $55,863 | 2025-12 |
| Roatan Marine Park International Inc | Dover | 501(c)(3) | 2015 | $284,234 | $25,240 | 2025-12 |
| Lewes in Bloom Inc | Lewes | 501(c)(3) | 2024 | $234,201 | $502,422 | 2026-06 |
| Integrated Vegetation Management Partners Inc | Newark | 501(c)(3) | 2004 | $212,623 | $13,786 | 2025-12 |
| Kids Saving the Rainforest Inc | Frankford | 501(c)(3) | 2001 | $210,265 | $542,741 | 2023-06 |
| Keep Delaware Beautiful Inc | Newark | 501(c)(3) | 2018 | $205,037 | $443,720 | 2024-12 |
| Delaware Greenways Inc | Wilmington | 501(c)(3) | 1990 | $174,120 | $254,804 | 2024-12 |
| Plastic Free Delaware | Wilmington | 501(c)(3) | 2020 | $156,837 | $52,256 | 2025-12 |
| Newark Bike Project Inc | Newark | 501(c)(3) | 2014 | $152,136 | $6,034 | 2025-12 |
| Friends of Wilmington Parks Inc | Montchanin | 501(c)(3) | 1992 | $127,164 | $387,065 | 2025-06 |
| Earth Hacks Foundation | Claymont | 501(c)(3) | 2019 | $118,851 | $70,876 | 2025-07 |
| Delaware River and Bay Lighthouse Foundation Inc | Lewes | 501(c)(3) | 2000 | $111,433 | $629,282 | 2025-06 |
| Foundation for Renewable Energy and the Environment | Wilmington | 501(c)(3) | 2016 | $91,778 | $382,383 | 2024-12 |
| National Conservation District Employees Association Inc | Dover | 501(c)(3) | 2006 | $80,245 | $186,513 | 2024-12 |
| Garden Club of Wilmington Community Projects Inc | Wilmington | 501(c)(3) | 1983 | $72,885 | $496,936 | 2025-06 |
| Delaware Interfaith Power and Light | Dover | 501(c)(3) | 2012 | $66,863 | $46,124 | 2024-06 |
| Breathe Mongolia - Clean Air Coalition Inc | Wilmington | 501(c)(3) | 2019 | $65,884 | $133,606 | 2024-12 |
| Save Groundwater Foundation | Lewes | 501(c)(3) | 2023 | $63,090 | $52,574 | 2024-12 |
| Conservation Agreement Fund A NJ Nonprofit Corporation | Lewes | 501(c)(3) | 2011 | $62,052 | $930,967 | 2025-12 |
| Nanticoke River Watershed Conservan Cy | Seaford | 501(c)(3) | 1993 | $51,803 | $753,219 | 2024-12 |
| Christina Conservancy Inc | Wilmington | 501(c)(3) | 1983 | $35,292 | $290,029 | 2025-09 |
| Delaware Seashore Preservation Foundation Inc | Ocean View | 501(c)(3) | 1998 | $14,894 | $398,838 | 2025-12 |
| Global Portal Institute | Dover | 501(c)(3) | 2023 | $14,177 | $1,854 | 2025-12 |
| Friends of Forwood Preserve Inc | Wilmington | 501(c)(3) | 2022 | $4,539 | $88,407 | 2025-12 |
| Friends of Brandywine Springs | Wilmington | 501(c)(3) | 1993 | $2,783 | $70,650 | 2025-12 |
| Renew New England Alliance | Dover | 501(c)(3) | 2020 | $2,230 | $8,824 | 2024-12 |
| The Luester T Mertz Legacy Trust for the Joyce Theater Foundation | Wilmington | 501(c)(3) | 2022 | $2,068 | $2.2 million | 2025-12 |
| Rodney Square Conservancy Inc | Wilmington | 501(c)(3) | 2024 | $500 | $104,107 | 2024-12 |
| Aviation Climate Taskforce Inc | Wilmington | 501(c)(3) | 2022 | $496 | $1.1 million | 2024-12 |
| 100 Black Men of Delaware | Wilmington | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Advance America Foundation | Newark | 501(c)(3) | 1991 | $0 | $0 | 2025-12 |
| Al Clinton Charitable Foundation | Wilmington | 501(c)(3) | 2023 | $321,469 | 2024-12 | |
| Alopias Foundation | Camden | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Amitra Vitta Trust | Wilmington | 501(c)(3) | 2024 | |||
| Apis Academy Inc | Newark | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Aquarium Divers for Coral Society | Wilmington | 501(c)(3) | 2020 | $0 | $0 | 2025-12 |
| Arasapha Garden Club Inc | New Castle | 501(c)(3) | 2005 | $0 | $0 | 2025-12 |
| Area Power Alliance for Rural Energy and Agriculture Inc | Wilmington | 501(c)(3) | 2024 | |||
| Atlantic Biodiversity Institute | Wilmington | 501(c)(3) | 2025 | |||
| Ayni Conscious Living Institute | Dover | 501(c)(3) | 2024 | |||
| Bci America Inc | Lewes | 501(c)(3) | 2024 | |||
| Birdsong Gardens Inc | Frankford | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |
| Black Forest Wildlife Preserve | Rehoboth BCH | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Blockchain Institute | Dover | 501(c)(3) | 2024 | |||
| Bloem Circular Fashion Public Benefit Corporation | Lewes | 501(c)(3) | 2024 | |||
| Blueeconomynewsearth Inc | Dover | 501(c)(3) | 2026 | |||
| Brandywine Shad 2020 Inc | Wilmington | 501(c)(3) | 2019 | $344,663 | 2024-12 | |
| Central Atlantic Region of State Garden Clubs | Millsboro | 501(c)(3) | 2016 | $0 | $0 | 2026-05 |
| City Funding Foundation | Dover | 501(c)(3) | 2025 | |||
| Claymont Coalition for Environmental Justice Inc | Wilmington | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Clean Coast Initiative Foundation | Wilmington | 501(c)(3) | 2025 | |||
| Clean Energy Research & Educationinstitute Inc | Dover | 501(c)(3) | 2007 | $0 | $0 | 2024-12 |
| Coastal Gardeners | Ocean View | 501(c)(3) | 2021 | $0 | $0 | 2026-04 |
| College and University Alumni for A Sustainable Planet | Wilmington | 501(c)(3) | 2024 | $0 | $0 | 2026-01 |
| Community Land Foundation | Lewes | 501(c)(3) | 2026 | |||
| Composting for Carbon Inc | Milford | 501(c)(3) | 2024 | $0 | $0 | 2023-12 |
| Congo Conservation Foundation | Wilmington | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Coral Catch Global Foundation | Dover | 501(c)(3) | 2026 | |||
| Countryside Garden Club | Newark | 501(c)(3) | 2024 | $0 | $0 | 2024-09 |
| Deep Roots Community Foundation | Hockessin | 501(c)(3) | 2025 | |||
| Delaware Association for Environmental Education | Dover | 501(c)(3) | 2016 | $0 | $0 | 2024-12 |
| Delaware Environmental Coalition Inc | Rehoboth BCH | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Delaware Federation of Garden Clubs | Middletown | 501(c)(3) | 1960 | $0 | $0 | 2026-04 |
| Delaware Green Recycling Community Outreach | Wilmington | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Delaware Invasive Species Council Inc | Dover | 501(c)(3) | 2002 | $0 | $0 | 2025-12 |
| Delaware Native Plant Society | Dover | 501(c)(3) | 2004 | $0 | $0 | 2025-12 |
| Delaware Onsite Wastewater Association Inc | Dover | 501(c)(3) | 2012 | $0 | $0 | 2025-12 |
| Duck Creek Gardeners | Smyrna | 501(c)(3) | 2017 | $0 | $0 | 2026-05 |
| Ecological Research & Development Group Inc | Dover | 501(c)(3) | 1996 | $0 | $0 | 2025-06 |
| Environmental Justice Foundation Inc | Wilmington | 501(c)(3) | 2023 | $1 | 2024-12 | |
| First State Resource Conservation and Development Council Inc | Dover | 501(c)(3) | 1987 | $0 | $0 | 2025-06 |
| Forest4future Incorporated | Dover | 501(c)(3) | 2026 | |||
| Fossil Free Media Inc | Dover | 501(c)(3) | 2025 | $0 | $0 | 2024-12 |
| Four Seasons Gardeners of Heritage Shores | Bridgeville | 501(c)(3) | 2022 | $0 | $0 | 2024-12 |
| Friends of Coopers Farm Cemetery Association | Clayton | 501(c)(3) | 2022 | $0 | $0 | 2025-04 |
| Friends of Lums Pond Inc | Bear | 501(c)(3) | 2012 | $0 | $0 | 2025-12 |
| Friends of Prime Hook National Wildlife Refuge Inc | Milton | 501(c)(3) | 1999 | $0 | $0 | 2026-06 |
| Friends of White Clay Creek State Park | Newark | 501(c)(3) | 2000 | $0 | $0 | 2025-12 |
| Future Sasquatch LTD | Frederica | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Garden Club Federation of Pennsylvania | Newark | 501(c)(3) | 2004 | $0 | $0 | 2026-04 |
| Garden Club Federation of Pennsylvania | Newark | 501(c)(3) | 2004 | $0 | $0 | 2026-04 |
| Garden Gate Garden Club | Wilmington | 501(c)(3) | 2019 | $0 | $0 | 2026-06 |
| Gardeners By the Sea | Bethany Beach | 501(c)(3) | 2022 | $0 | $0 | 2026-04 |
| Global Empathy Project Inc | Dover | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Greenkwacha Foundation | Wilmington | 501(c)(3) | 2026 | |||
| Grow One Future Inc | Wilmington | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| High Asia Habitat Fund | Dover | 501(c)(3) | 2020 | $0 | $0 | 2024-12 |
| Hospitality for Trees Inc | Wilmington | 501(c)(3) | 2023 | $0 | $0 | 2026-01 |
| Inland Bays Foundation Inc | Lewes | 501(c)(3) | 2012 | $0 | $0 | 2024-12 |
| Kent County Conservancy Inc | Dover | 501(c)(3) | 2015 | $0 | $0 | 2026-06 |
| Last Right Inc | Newark | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Long Life Institute Honey Fund | Milton | 501(c)(3) | 2018 | $0 | $394,830 | 2024-12 |
| Magnolia Mini Farm Foundation | Magnolia | 501(c)(3) | 2026 | |||
| Mango Manor Foundation | Wilmington | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Milford Garden Club | Milford | 501(c)(3) | 2021 | $0 | $0 | 2025-06 |
| Mill Pond Garden | Lewes | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Milton Garden Club Inc | Milton | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Muslim Climate Watch Inc | Dover | 501(c)(3) | 2024 | $0 | $0 | 2024-12 |
| Nanticoke Heritage Byway Inc | Seaford | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| New Earth Foundation Inc | Wilmington | 501(c)(3) | 1998 | $1.5 million | 2024-12 | |
| New Leaf Garden Club | Newark | 501(c)(3) | 2023 | $0 | $0 | 2024-12 |
| Omnicolosx Inc | Middletown | 501(c)(3) | 2022 | $0 | $0 | 2024-06 |
| Outdoorist Foundation | Dover | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Peace Love & Lavender Corp | Milton | 501(c)(3) | 2025 | |||
| Plantation Lakes Garden Club | Millsboro | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |
| Preserve Our Park Coalition Inc | Lewes | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Project Rescue Earth Foundation | New Castle | 501(c)(3) | 2019 | $0 | $0 | 2025-05 |
| Puri-Bawdon Family Foundation | Dover | 501(c)(3) | 2024 | |||
| R G Mendez Foundation | Dover | 501(c)(3) | 2025 | |||
| Redlac Incorporated | Wilmington | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| Rydit Foundation Inc | Middletown | 501(c)(3) | 2025 | |||
| Salt Air Gardeners | Ocean View | 501(c)(3) | 2019 | $0 | $0 | 2026-04 |
| Save Our Lakes Alliance | Rehoboth BCH | 501(c)(3) | 2005 | $0 | $0 | 2025-12 |
| Sea Leg Foundation | Lincoln | 501(c)(3) | 2021 | $0 | $15,511 | 2025-12 |
| Sinkability Inc | Rehoboth BCH | 501(c)(3) | 2024 | |||
| Sky Foundation | Wilmington | 501(c)(3) | 2022 | $10 million | 2024-12 | |
| Soil and Spirit Inc | Middletown | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Sussex Preservation Coalition Society | Rehoboth | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Synq Alliance Foundation Inc | Middletown | 501(c)(3) | 2022 | $0 | $0 | 2024-12 |
| The Research Foundation for the Innovation of Eco-Education | Wilmington | 501(c)(3) | 2020 | $0 | $0 | 2025-12 |
| Towle Ocean Conservation Foundation | Wilmington | 501(c)(3) | 2016 | $1 million | 2024-12 | |
| Tree Is Life Foundation LLC | Newark | 501(c)(3) | 2024 | |||
| Turn the Tide Foundation Inc | Dover | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| Twin Fins Alliance Inc | Newark | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| United States of America Preservati On and Beautification Foundation | Wilmington | 501(c)(3) | 2026 | |||
| Whitehall Community Garden Association | Middletown | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Wild Wonderment Foundation | Ellendale | 501(c)(3) | 2024 | $0 | $0 | 2025-08 |
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.