Environment nonprofits in Wisconsin

Environment nonprofits in Wisconsin. Browse 1,084 public nonprofit profiles. Review organization identities, available filing years, and their complete CharitySense profiles.

Location refers to headquarters recorded in public sources, not an organization’s service area. Classification describes its reported category and does not assess its effectiveness.

Nonprofit profiles

  1. Central Sands Land Foundation Inc

    EIN 874834927 · Headquarters: Nekoosa, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  2. Central Wisconsin Agribusiness Innovation Center Inc

    EIN 264432171 · Headquarters: Owen, WI, US · Environment · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  3. Central Wisconsin Nature Foundation

    EIN 271005494 · Headquarters: NEKOOSA, WI, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  4. Central Wisconsin Recreation & Wildlife

    EIN 853777179 · Headquarters: MEDFORD, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  5. Central Wisconsin Whitetails Unlimited Inc

    EIN 391755856 · Headquarters: STRATFORD, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  6. Chain O Lakes Foundation Inc

    EIN 272900029 · Headquarters: WAUPACA, WI, US · Environment · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  7. Chequamegon Bay Renewables Inc

    EIN 815242750 · Headquarters: Bayfield, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. Chicog Community Lakes Committee

    EIN 372160287 · Headquarters: Minong, WI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  9. Children of the Earth United Inc

    EIN 113467710 · Headquarters: Fitchburg, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  10. Chippewa County Land Conservancy Inc

    EIN 391984435 · Headquarters: CHIPPEWA FALLS, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  11. Chippewa Valley Master Gardener Association

    EIN 204615679 · Headquarters: Chippewa Falls, WI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  12. Chippewa Valley Outdoor Resource Allianc

    EIN 391968307 · Headquarters: CHIPPEWA FALLS, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  13. Citizens for a Better Wisconsin Inc

    EIN 273052924 · Headquarters: MILWAUKEE, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  14. Citizens for a Scenic Wisconsin

    EIN 391993195 · Headquarters: MAPLE BLUFF, WI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  15. Citizens for Responsible Land Use Inc

    EIN 454323388 · Headquarters: Rice Lake, WI, US · Environment · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  16. Citizens for Safe Water Around Badger

    EIN 391706558 · Headquarters: Merrimac, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  17. Citizens Protecting Lake Superior from Cafos Inc

    EIN 810901142 · Headquarters: Bayfield, WI, US · Environment · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  18. Clam Falls Flowage Lake Association

    EIN 843150370 · Headquarters: Frederic, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  19. Clam Lake Forest Riders Inc

    EIN 463911694 · Headquarters: CLAM LAKE, WI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  20. Clarks Lake Advancement Association Inc

    EIN 391389570 · Headquarters: STURGEON BAY, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  21. Clean Green Action

    EIN 813061653 · Headquarters: WISCONSIN RAPIDS, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  22. Clean Lakes Alliance Inc

    EIN 273917243 · Headquarters: MADISON, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  23. Clean Water Action Council of Northeast Wisconsin Inc

    EIN 391567719 · Headquarters: Green Bay, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  24. Clean Water Association Inc

    EIN 473178551 · Headquarters: Pewaukee, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  25. Clean Wisconsin Inc

    EIN 391413448 · Headquarters: MADISON, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  26. Clean World Benefits Inc

    EIN 920360542 · Headquarters: MADISON, WI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  27. Cleaner Lakes Corporation

    EIN 204900650 · Headquarters: FRANKSVILLE, WI, US · Environment · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  28. Cleaning Up Milwaukee Inc

    EIN 863350331 · Headquarters: Cedar Grove, WI, US · Environment · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  29. Cleantech Partners Inc

    EIN 810575115 · Headquarters: MADISON, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  30. Clear Lake Improvement Association

    EIN 201126662 · Headquarters: MILTON, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  31. Climate Alliance for the Common Good

    EIN 853037522 · Headquarters: La Crosse, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  32. Climate Jobs Wisconsin Action Fund Inc

    EIN 413021892 · Headquarters: MILWAUKEE, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  33. Cloverleaf Lakes Protective Association Inc

    EIN 396284458 · Headquarters: EMBARRASS, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  34. Coalition for Sustainable Initiatives Inc

    EIN 474978406 · Headquarters: Whitefish Bay, WI, USA · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990

  35. Coalition to Save the Menominee River Inc

    EIN 821897578 · Headquarters: MARINETTE, WI, USA · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  36. Comforter Ministry Incorporated

    EIN 270261885 · Headquarters: Wisconsin Rapids, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  37. Committee for Responsible Land Use Inc

    EIN 274001697 · Headquarters: Bayfield, WI, US · Environment · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  38. Community Conservation Inc

    EIN 391655800 · Headquarters: VIROQUA, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  39. Community Conservation Legacy Fund Inc

    EIN 834242807 · Headquarters: VIROQUA, WI, USA · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  40. Community Improvement of Algoma

    EIN 391729119 · Headquarters: ALGOMA, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  41. Concerned Citizens of Newport Inc

    EIN 392006372 · Headquarters: Wisconsin Dells, WI, US · Environment · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  42. Conservation Ag Foundation Inc

    EIN 934608656 · Headquarters: Brookfield, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  43. Cool Choices Inc

    EIN 264702751 · Headquarters: MADISON, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  44. Coon Creek Comm Watershed Cncl Inc

    EIN 882373146 · Headquarters: Coon Valley, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  45. Couderay Waters Regional Land Tr Inc

    EIN 466125265 · Headquarters: Hayward, WI, US · Environment · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  46. Couillard Solar Foundation Inc

    EIN 824111491 · Headquarters: DEERFIELD, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  47. Coulee Partners for Sustainability

    EIN 262565386 · Headquarters: La Crosse, WI, US · Environment · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  48. Coulee Region Audubon Society Inc

    EIN 391869495 · Headquarters: La Crosse, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  49. Council of Wisconsin Rural Initiatives Inc

    EIN 262032858 · Headquarters: Cochrane, WI, US · Environment · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  50. Courte Oreilles Lakes Association Inc

    EIN 391829932 · Headquarters: HAYWARD, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  51. Crab Lake Conservation Foundation Inc

    EIN 391819259 · Headquarters: FRANKLIN, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  52. Cranberry Lake Association Inc

    EIN 260772838 · Headquarters: Eagle River, WI, US · Environment · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  53. Cranberry Lake-flowage Association

    EIN 562594439 · Headquarters: Wascott, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  54. Crawford Stewardship Project Ltd

    EIN 261210395 · Headquarters: Gays Mills, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  55. Crawling Stone Lakes Association Inc

    EIN 462142334 · Headquarters: LAC DU FLAMBEAU, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  56. Crescent Lake Association Inc

    EIN 161726751 · Headquarters: Rhinelander, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  57. Cross Country Cruisers

    EIN 300589765 · Headquarters: Boyd, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  58. Crossroads at Big Creek Inc

    EIN 050560158 · Headquarters: STURGEON BAY, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  59. Crowned & Covered Foundation Inc

    EIN 422246504 · Headquarters: Racine, WI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  60. Crystal Lake Assoc Inc

    EIN 872116493 · Headquarters: Oconomowoc, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  61. Crystal Lake Association

    EIN 383817137 · Headquarters: PICKEREL, WI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  62. Dairymen's Foundation Inc

    EIN 271500912 · Headquarters: BOULDER JUNCTION, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  63. Daylily Society of Southeast Wisconsin Inc

    EIN 391878541 · Headquarters: OAK CREEK, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  64. Decatur Lake and Mill Race Association Inc

    EIN 454916272 · Headquarters: Brodhead, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  65. Deer Creek Sport and Conservation Club Inc

    EIN 391574291 · Headquarters: VERONA, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  66. Deer Lake Conservancy Inc

    EIN 391815609 · Headquarters: SAINT CROIX FALLS, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  67. Deerskin Lake Association Inc

    EIN 473916538 · Headquarters: Eagle River, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  68. Deforest Area Support Staff

    EIN 391909322 · Headquarters: MADISON, WI, US · Environment · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  69. Degree of Honor Protective Association

    EIN 383282504 · Headquarters: Milwaukee, WI, US · Environment · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  70. Degree of Honor Protective Association

    EIN 550748904 · Headquarters: Milwaukee, WI, US · Environment · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  71. Degree of Honor Protective Association

    EIN 711016955 · Headquarters: Milwaukee, WI, US · Environment · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  72. Delavan Lake Improvement Association

    EIN 237105919 · Headquarters: Delavan, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  73. Delavan Rotary Gardens Foundation Inc

    EIN 680565515 · Headquarters: DELAVAN, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  74. Des Moines Lake Association Inc

    EIN 612077605 · Headquarters: DANBURY, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  75. Des Plaines Wetlands Conservancy Inc

    EIN 391461671 · Headquarters: PLEASANT PRAIRIE, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  76. Desair Lake Restoration Inc

    EIN 421623007 · Headquarters: Rice Lake, WI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  77. Design Coalition Institute Inc

    EIN 562623863 · Headquarters: Madison, WI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  78. Deutsches Land Inc

    EIN 390669947 · Headquarters: MILWAUKEE, WI, USA · Environment · Latest available filing year: 2011 · Primary form: IRS Form 990

  79. Devils Lake Property Owners Assoc Inc

    EIN 611517351 · Headquarters: WEBSTER, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  80. Diamond Lakers

    EIN 853215127 · Headquarters: Cable, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  81. Dodge County Farmers Inc

    EIN 823557440 · Headquarters: COLUMBUS, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  82. Dodge County Healthy Soil Healthy Water Alliance Inc

    EIN 850742692 · Headquarters: Beaver Dam, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  83. Dodge County Land Trust Incorporated

    EIN 134348516 · Headquarters: WATERTOWN, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  84. Dodge County Master Gardener Association

    EIN 050607026 · Headquarters: BEAVER DAM, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  85. Door County Beekeepers Club Association

    EIN 994583848 · Headquarters: Brussels, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  86. Door County Green Fund

    EIN 391940171 · Headquarters: Sturgeon Bay, WI, US · Environment · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  87. Door County Gulf Coast Relief Fund Inc

    EIN 020778514 · Headquarters: Sister Bay, WI, US · Environment · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  88. Door County Land Trust Inc

    EIN 391561423 · Headquarters: STURGEON BAY, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  89. Door County Master Gardeners Association Inc

    EIN 391914259 · Headquarters: Sturgeon Bay, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  90. Door Garden Club Inc

    EIN 931547035 · Headquarters: Ephraim, WI, US · Environment · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  91. Down to Earth Community Garden Inc

    EIN 454563892 · Headquarters: Kenosha, WI, US · Environment · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  92. Driftless Area Land Conservancy Inc

    EIN 392017802 · Headquarters: DODGEVILLE, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  93. Driftless Bird Inc

    EIN 991162202 · Headquarters: Onalaska, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  94. Driftless Compost Collective Incorp Erated

    EIN 394327010 · Headquarters: La Farge, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  95. Driftless Curiosity Inc

    EIN 862231168 · Headquarters: VIOLA, WI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  96. Driftless Defenders Inc

    EIN 611804440 · Headquarters: Spring Green, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  97. Drifts Edge Nature Conservatory

    EIN 393453149 · Headquarters: Belleville, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  98. Drumlin Area Land Trust Inc

    EIN 391919960 · Headquarters: Fort Atkinson, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  99. Dubay Property Owners Association Inc

    EIN 364622918 · Headquarters: Junction City, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  100. Durand Sportsmen's Club Inc

    EIN 392037937 · Headquarters: DURAND, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

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