Data / Nonprofits / Indiana / Indianapolis / Environment
Environment nonprofits in Indianapolis, IN: 86 registered with the IRS
86 environment nonprofits are registered with the IRS in Indianapolis, IN, 66 of them 501(c)(3) charities; the 30 that report revenue took in $32.7 million. The largest by revenue: Keep Indianapolis Beautiful Inc ($8.4 million), Central Indiana Land Trust Incorporated ($7.2 million), The Hoosier Environmental Council Inc ($3 million).
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Every organization, largest by revenue first
| Organization | Type | Since | Revenue | Assets | Filing |
|---|
| Keep Indianapolis Beautiful Inc | 501(c)(3) | 1981 | $8.4 million | $17.6 million | 2025-12 |
| Central Indiana Land Trust Incorporated | 501(c)(3) | 1991 | $7.2 million | $36.4 million | 2024-12 |
| The Hoosier Environmental Council Inc | 501(c)(3) | 1985 | $3 million | $4.5 million | 2025-06 |
| Holliday Park Foundation Inc | 501(c)(3) | 1991 | $2.6 million | $8.2 million | 2025-06 |
| Indiana Association of Soil & Water | 501(c)(3) | 1970 | $2.6 million | $1.6 million | 2025-09 |
| Mud Creek Conservancy Inc | 501(c)(3) | 1995 | $1.8 million | $2.9 million | 2024-12 |
| Earth Charter Indiana Inc | 501(c)(3) | 2005 | $1 million | $583,591 | 2024-12 |
| Indiana Conservation Fund | 501(c)(3) | 2024 | $813,748 | $724,111 | 2024-12 |
| Upper White River Watershed Alliance Inc | 501(c)(3) | 1999 | $812,613 | $321,625 | 2024-12 |
| Indiana Forest Alliance Inc | 501(c)(3) | 2014 | $768,420 | $150,590 | 2024-12 |
| A Place Called Home Residental Living Inc | 501(c)(3) | 2022 | $699,473 | $699,473 | 2023-12 |
| Indiana Water Environment Association Inc | 501(c)(3) | 1980 | $594,489 | $321,942 | 2024-12 |
| Indiana Society of Professional Land Surveyors Inc | 501(c)(6) | 2014 | $391,540 | $527,852 | 2025-06 |
| Indiana Native Plant Society Inc | 501(c)(3) | 1998 | $231,705 | $391,515 | 2025-12 |
| People for Urban Progress | 501(c)(3) | 2009 | $215,173 | $95,822 | 2024-12 |
| Overland Expo Foundation | 501(c)(3) | 2020 | $202,559 | $382,534 | 2024-12 |
| Friends of the White River Inc | 501(c)(3) | 1986 | $176,679 | $177,785 | 2025-12 |
| Indiana Land Protection Alliance | 501(c)(3) | 2016 | $176,095 | $114,061 | 2024-12 |
| Carbon Neutral Indiana Inc | 501(c)(3) | 2022 | $160,571 | $31,273 | 2025-12 |
| Indianapolis Garden Club | 501(c)(3) | 1963 | $143,122 | $418,258 | 2025-06 |
| Greenways Foundation Inc | 501(c)(3) | 1992 | $128,709 | $198,123 | 2024-12 |
| Sustainable Connexions International Inc | 501(c)(3) | 2014 | $103,728 | $102,320 | 2025-12 |
| Amos W Butler Audubon Society | 501(c)(3) | 1973 | $92,589 | $537,638 | 2025-08 |
| Earth Day Indiana Inc | 501(c)(3) | 1992 | $90,880 | $10,367 | 2025-12 |
| Indiana Karst Conservancy | 501(c)(3) | 1986 | $71,877 | $1.9 million | 2025-12 |
| Old Northside Foundation Inc | 501(c)(3) | 1991 | $66,355 | $581,639 | 2025-12 |
| Marion County Wellfield Education Corporation | 501(c)(3) | 1998 | $65,860 | $90,107 | 2025-12 |
| Indiana Recycling Coalition Inc | 501(c)(3) | 1991 | $40,875 | $33,025 | 2025-12 |
| Land Stewards of Indianapolis | 501(c)(3) | 2022 | $1,461 | $1,861 | 2024-12 |
| Indiana Smallmouth Alliance Incorporated | 501(c)(3) | 2024 | $663 | $2,576 | 2025-12 |
| Art Nature Consortium Incorporated | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| Beautify the Block Corp | 501(c)(3) | 2023 | $0 | $0 | 2025-05 |
| Bottleless Nation Charitable Foundation Inc | 501(c)(3) | 2024 | | $3,789 | 2025-12 |
| Brightwood Concerned Citizens Neighborhood Organization | 501(c)(3) | 2021 | $0 | $0 | 2024-07 |
| Can Lady Project | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Carl G Fisher Society Inc | 501(c)(3) | 2014 | $0 | $0 | 2023-12 |
| Eagle Creek Nature Conservancy and Preservation Inc | 501(c)(3) | 1999 | | $2.1 million | 2025-12 |
| Eagle Creek Preservation Inc | 501(c)(3) | 2026 | | | |
| Friends of Marott Woods Nature Preserve | 501(c)(3) | 2020 | $0 | $0 | 2024-12 |
| Garden Club of Indiana | 501(c)(4) | 2011 | $0 | $0 | 2026-03 |
| Garden Club of Indiana | 501(c)(4) | 2011 | $0 | $0 | 2026-03 |
| Garden Club of Indiana | 501(c)(4) | 2011 | $0 | $0 | 2026-03 |
| Garden Club of Indiana | 501(c)(4) | 2011 | $0 | $0 | 2026-03 |
| Garden Club of Indiana | 501(c)(4) | 2011 | $0 | $0 | 2026-03 |
| Garden Club of Indiana | 501(c)(4) | 2011 | $0 | $0 | 2026-03 |
| Garden Club of Indiana | 501(c)(4) | 2011 | $0 | $0 | 2026-03 |
| Garden Club of Indiana | 501(c)(4) | 2011 | $0 | $0 | 2026-03 |
| Garfield Park Master Gardeners Association | 501(c)(3) | 2024 | | | |
| Growth Foundation Inc | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |
| Henderson Helping Hands Inc | 501(c)(3) | 2025 | $0 | $0 | 2025-01 |
| Herb Society of Central Indiana- Unit Herb Society of America Inc | 501(c)(3) | 2023 | $0 | $0 | 2025-07 |
| Hoosier Lakes Conservation | 501(c)(3) | 2026 | | | |
| Hsi Solar Foundation | 501(c)(3) | 2024 | | | |
| Indiana Cave Survey Inc | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Indiana Energy Independence Fund | 501(c)(3) | 2024 | $0 | $0 | 2024-12 |
| Indiana National Road Association Inc | 501(c)(3) | 1995 | $0 | $0 | 2025-12 |
| Indiana Parks Alliance Inc | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Indiana Society of Professional Land Surveyors Inc | 501(c)(6) | 2014 | $0 | $0 | 2025-06 |
| Indiana Society of Professional Land Surveyors Inc | 501(c)(6) | 2014 | $0 | $0 | 2025-06 |
| Indiana Society of Professional Land Surveyors Inc | 501(c)(6) | 2014 | $0 | $0 | 2025-06 |
| Indiana Society of Professional Land Surveyors Inc | 501(c)(6) | 2014 | $0 | $0 | 2025-06 |
| Indiana Society of Professional Land Surveyors Inc | 501(c)(6) | 2014 | $0 | $0 | 2025-06 |
| Indiana Society of Professional Land Surveyors Inc | 501(c)(6) | 2014 | $0 | $0 | 2025-06 |
| Indiana Society of Professional Land Surveyors Inc | 501(c)(6) | 2014 | $0 | $0 | 2025-06 |
| Indiana Society of Professional Land Surveyors Inc | 501(c)(6) | 2014 | $0 | $0 | 2025-06 |
| Indiana Society of Professional Land Surveyors Inc | 501(c)(6) | 2014 | $0 | $0 | 2025-06 |
| Indiana Society of Professional Land Surveyors Inc | 501(c)(6) | 2014 | $0 | $0 | 2025-06 |
| Indiana Vector Control Association Plan Administrator | 501(c)(3) | 2017 | $0 | $0 | 2025-12 |
| Indianapolis Hosta Society Inc | 501(c)(3) | 1999 | $0 | $0 | 2025-12 |
| Indy Beta Inc | 501(c)(3) | 2018 | $0 | $0 | 2025-12 |
| Lake Freeman Ski Club Inc | 501(c)(3) | 2022 | | $1 | 2025-12 |
| Let It Grow | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| Lindas Unique Angels 2 Inc | 501(c)(3) | 2023 | $0 | $0 | 2024-12 |
| Maries Learning Academy | 501(c)(3) | 2024 | | | |
| Marion County Master Gardener Association | 501(c)(3) | 2001 | $0 | $0 | 2025-12 |
| Monon 16 Community Garden | 501(c)(3) | 2018 | $0 | $0 | 2024-12 |
| Monumental Movement Community Development Corp | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Ocean-Aquarium Foundation LTD | 501(c)(3) | 2017 | $0 | $0 | 2024-12 |
| People for Pollinators Inc | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Prosper Garden Foundation Corp | 501(c)(3) | 2023 | | $6,520 | 2025-12 |
| Sargent Road Association Foundation Inc | 501(c)(3) | 2019 | $0 | $0 | 2024-12 |
| Solarize Indiana Inc | 501(c)(3) | 2019 | $0 | $0 | 2026-03 |
| Spinnaker Cove Nature Preserve and Conservation Area Inc | 501(c)(3) | 2002 | | $96,485 | 2025-03 |
| The Garden Club of Indiana Inc | 501(c)(4) | 2011 | $0 | $0 | 2026-03 |
| Traders Point Environmental Renewal Inc | 501(c)(3) | 2021 | $0 | $0 | 2024-12 |
| Wildergarden Inc | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
Other causes in Indianapolis, IN
Every nonprofit in Indianapolis, IN · Environment nonprofits across the state · Nonprofits in every city of the state
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.