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. 100 Percent Approved Corporation

    EIN 832210451 · Headquarters: MILWAUKEE, WI, US · Environment · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  2. 1000 Friends of Wisconsin

    EIN 391857262 · Headquarters: STEVENS POINT, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  3. 14 Mile Watershed Alliance - Corporation

    EIN 861497972 · Headquarters: Nekoosa, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  4. 350 Wisconsin Action Inc

    EIN 882053462 · Headquarters: MADISON, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  5. 350 Wisconsin Inc

    EIN 810817375 · Headquarters: MADISON, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  6. 4-H Clubs & Affiliated 4-H Organizations

    EIN 391454479 · Headquarters: Durand, WI, US · Environment · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  7. 7 Hour Plane Crash Foundation

    EIN 334575258 · Headquarters: waukesha, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  8. A Wisconsin Alliance for Resources and the Environment Inc

    EIN 391704587 · Headquarters: Madison, WI, US · Environment · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  9. Academy of Evangelical Scientists and Ethicists Inc

    EIN 251918573 · Headquarters: Oregon, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  10. Adams County Lake Alliance

    EIN 454259235 · Headquarters: OXFORD, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  11. Ahnapee River Watershed Alliance Inc

    EIN 861070805 · Headquarters: Algoma, WI, US · Environment · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  12. Aldo Leopold Nature Center Inc

    EIN 391786897 · Headquarters: MONONA, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  13. Alliance for Water Stewardship North America Inc

    EIN 271243253 · Headquarters: MILWAUKEE, WI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  14. Alma Center Improvement Club

    EIN 842424391 · Headquarters: Alma Center, WI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  15. Almond Rod & Gun Club Inc

    EIN 391682029 · Headquarters: ALMOND, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  16. Alpha Pi Alliance for the Preservation of Historic

    EIN 391677467 · Headquarters: Verona, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  17. American Rose Society

    EIN 391469156 · Headquarters: Verona, WI, US · Environment · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  18. Ancient Earthworks Society of Wisconsin Inc

    EIN 465323776 · Headquarters: Madison, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  19. Anderson Park Friends Inc

    EIN 463740061 · Headquarters: OREGON, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  20. Antigo Garden Club

    EIN 270444484 · Headquarters: Deerbrook, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  21. Apostle Island's Historic Preservation Conservancy

    EIN 260894845 · Headquarters: BAYFIELD, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  22. Apple River Association Inc

    EIN 300663532 · Headquarters: Amery, WI, US · Environment · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  23. Applied Ecological Institute Inc

    EIN 854306479 · Headquarters: BRODHEAD, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  24. Aquarian Garden

    EIN 030404860 · Headquarters: PLOVER, WI, US · Environment · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  25. Arbor View Gardens Inc

    EIN 392013268 · Headquarters: CLINTONVILLE, WI, USA · Environment · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  26. Arboreus Inc

    EIN 830784352 · Headquarters: SHEBOYGAN, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  27. Arkdale Lake Association Inc

    EIN 391459947 · Headquarters: Arkdale, WI, US · Environment · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  28. Art and Nature Center

    EIN 391127908 · Headquarters: WASHINGTON ISLAND, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  29. Associated Recyclers of Wisconsin Inc

    EIN 391614576 · Headquarters: STEVENS POINT, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  30. Automotive Recyclers Ccp of Wisconsin Inc

    EIN 391945032 · Headquarters: CADOTT, WI, USA · Environment · Latest available filing year: 2012 · Primary form: IRS Form 990-EZ

  31. BadgerLand Foundation Inc

    EIN 883999106 · Headquarters: Monroe, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  32. Baird Creek Preservation Foundation Inc

    EIN 391992358 · Headquarters: GREEN BAY, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  33. Ballard-irving-white Birch Lakes Association

    EIN 391908560 · Headquarters: STAR LAKE, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  34. Balsam Branch Partnership Inc

    EIN 391963477 · Headquarters: Amery, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  35. Barron County Master Gardeners

    EIN 460473996 · Headquarters: RICE LAKE, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  36. Bass Lake-town of Casey-shore Owners Association

    EIN 822707299 · Headquarters: SPOONER, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  37. Bay Area Daylily Buds Inc

    EIN 391958390 · Headquarters: Wausaukee, WI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  38. Bay View Garden and Yard Society

    EIN 391927573 · Headquarters: Milwaukee, WI, US · Environment · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  39. Bear Crossing Outdoors Inc

    EIN 851792611 · Headquarters: Medford, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  40. Beaver Dam Lake Improvement Association Inc

    EIN 810578367 · Headquarters: BEAVER DAM, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  41. Belmont Sportsmen's Club Inc

    EIN 391478486 · Headquarters: BELMONT, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  42. Beloit Convention and Visitors Bureau Charitable Foundation Inc

    EIN 391590764 · Headquarters: BELOIT, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  43. Benevolent & Protective Order Elks

    EIN 390749902 · Headquarters: FOND DU LAC, WI, US · Environment · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  44. Berlin Conservation Club Inc

    EIN 300391627 · Headquarters: Berlin, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  45. Berry Lake Property Owners Association

    EIN 465521890 · Headquarters: Neenah, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  46. Betty Lewis Environmental Charitable Trust

    EIN 276039148 · Headquarters: APPLETON, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  47. Bielinski Conservation Community Land Foundation Inc

    EIN 392001794 · Headquarters: PEWAUKEE, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  48. Big Arbor Vitae Lake Association

    EIN 271269431 · Headquarters: Arbor Vitae, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  49. Big Bass Lake Owners Association

    EIN 474815582 · Headquarters: Eagle River, WI, US · Environment · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  50. Big Bearskin Lake Association

    EIN 391620198 · Headquarters: Harshaw, WI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  51. Big Chetac Chain Lake Assoc Inc

    EIN 391824627 · Headquarters: Birchwood, WI, US · Environment · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  52. Big Doctor Lake Assoc Inc

    EIN 882533444 · Headquarters: SIREN, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  53. Big Eau Pleine Citizens Organization Inc

    EIN 300519357 · Headquarters: MOSINEE, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  54. Big Portage Lake Riparian Owners Association Incorporated

    EIN 391822578 · Headquarters: Land O Lakes, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  55. Big Sand Lake Association Inc

    EIN 460692294 · Headquarters: Siren, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  56. Big Sissabagama Lake Shoreowners

    EIN 921701712 · Headquarters: STONE LAKE, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  57. Bike Wisconsin Education and Action Coalition

    EIN 391951708 · Headquarters: Dodgeville, WI, US · Environment · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  58. Bioenergy Deployment Consortium Inc

    EIN 272029351 · Headquarters: MIDDLETON, WI, USA · Environment · Latest available filing year: 2020 · Primary form: IRS Form 990

  59. Birch Island Lake Association Inc

    EIN 391830333 · Headquarters: Webster, WI, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  60. Black Earth Creek Foundation Inc

    EIN 391869791 · Headquarters: Cross Plains, WI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  61. Black Earth Creek Watershed Association Inc

    EIN 391822799 · Headquarters: Cross Plains, WI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  62. Black Oak Lake Preservation Foundation Inc

    EIN 201623775 · Headquarters: Landolakes, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  63. Black Point Historic Preserve Inc

    EIN 311577093 · Headquarters: LAKE GENEVA, WI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  64. Black River Advancement Association

    EIN 391638325 · Headquarters: SHEBOYGAN, WI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  65. Blair Street Gardens Committee Inc

    EIN 391524819 · Headquarters: MADISON, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  66. Blockhouse Lake Association Inc

    EIN 392032209 · Headquarters: PARK FALLS, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  67. Blue Hills Trail Association Inc

    EIN 383740844 · Headquarters: Bruce, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  68. Blue Mounds Project Inc

    EIN 392006175 · Headquarters: Mount Horeb, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  69. Bluff Country Master Gardeners Association

    EIN 473210713 · Headquarters: La Crosse, WI, US · Environment · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  70. Boerner Gardens Endowment Inc

    EIN 721585827 · Headquarters: HALES CORNERS, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  71. Boulder Lake Advancement Assoc

    EIN 391800400 · Headquarters: Boulder Junction, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  72. Bradley-sigma Phi Historical Landmark Preservation Fund Inc

    EIN 391702094 · Headquarters: MADISON, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  73. Brice Prairie Conservation Association Inc

    EIN 391127641 · Headquarters: Onalaska, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  74. Brown County Citizens for Responsible Wind Energy

    EIN 271547159 · Headquarters: Kauauna, WI, US · Environment · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  75. Brule River Sportsmens Club Inc

    EIN 391402884 · Headquarters: Brule, WI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  76. Bt Farms Foundation Inc

    EIN 873939021 · Headquarters: MADISON, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  77. Buckatabon Lakes Association Inc

    EIN 474844385 · Headquarters: conover, WI, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  78. Buckthorn Project Inc

    EIN 461623352 · Headquarters: Wauwatosa, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  79. Buffalo County Land & Trails Trust Inc

    EIN 471894376 · Headquarters: Alma, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  80. Burlington Area Garden Club Inc

    EIN 333004304 · Headquarters: Burlington, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  81. Burlington Festival Park Inc

    EIN 202391176 · Headquarters: Burlington, WI, US · Environment · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  82. Burnett County Lakes and Rivers Association Inc

    EIN 390843349 · Headquarters: SIREN, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  83. Butte Des Morts Conservation Club Inc

    EIN 391793728 · Headquarters: BUTTE DES MORTS, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  84. Calumet County Ag Stewardship Alliance

    EIN 844102598 · Headquarters: Chilton, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  85. Calumet County Citizens for Responsible Energy Inc

    EIN 205827171 · Headquarters: CHILTON, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  86. Cambria Conservation Club Inc

    EIN 814861997 · Headquarters: RANDOLPH, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  87. Cambridge Farm to School Inc

    EIN 832862201 · Headquarters: Cambridge, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  88. Cambridge Tree Project

    EIN 262013765 · Headquarters: CAMBRIDGE, WI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  89. Camp10 Gardens Inc

    EIN 862308911 · Headquarters: Lena, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  90. Capitol Water Trails Ltd

    EIN 391967559 · Headquarters: MADISON, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  91. Care of Creation Inc

    EIN 202719196 · Headquarters: Madison, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  92. Carolyn A Victor Land Conservancy Inc

    EIN 812387707 · Headquarters: Fond Du Lac, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  93. Carpenter Lake Association Inc

    EIN 411774209 · Headquarters: Eagle River, WI, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  94. Cassian-long Lake Association Inc

    EIN 391816413 · Headquarters: Harshaw, WI, US · Environment · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  95. Cataract Sportsmens Club Inc

    EIN 237229228 · Headquarters: CATARACT, WI, USA · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990

  96. Catfish Lake Association

    EIN 731640916 · Headquarters: EAGLE RIVER, WI, US · Environment · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  97. Cedar Lakes Conservation Foundation Inc

    EIN 391284451 · Headquarters: WEST BEND, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  98. Cedarburg Junior Womans Club Inc

    EIN 391238200 · Headquarters: Cedarburg, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  99. Central Conservation Inc

    EIN 270774779 · Headquarters: LA CROSSE, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  100. Central Region Garden Clubs

    EIN 812769063 · Headquarters: Sun Prairie, WI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

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