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. Durwards Glen Olrg Ltd

    EIN 451684703 · Headquarters: BARABOO, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  2. Dusty Trails Atv Club Inc

    EIN 391845992 · Headquarters: Mountain, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  3. E4 Inc

    EIN 770603499 · Headquarters: PLYMOUTH, WI, USA · Environment · Latest available filing year: 2010 · Primary form: IRS Form 990-PF

  4. Eagle Lake Improvement Association

    EIN 821263529 · Headquarters: Kansasville, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  5. Eagle Nature Trail Inc

    EIN 994333529 · Headquarters: Eagle, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  6. Eagle River Chain of Lakes Association Inc

    EIN 470870945 · Headquarters: EAGLE RIVER, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  7. Earth Conclave Inc

    EIN 391782681 · Headquarters: Miwaukee, WI, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  8. Earthology Institute

    EIN 263627989 · Headquarters: Viroqua, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  9. Eastern Lands and Resources Council Inc

    EIN 261119243 · Headquarters: Madison, WI, US · Environment · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  10. Eau Claire Area Master Gardeners Association

    EIN 392040171 · Headquarters: Eau Claire, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  11. Eau Claire River Watershed Association Ecrwa Inc

    EIN 922960526 · Headquarters: Augusta, WI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  12. Eco Synergy Partners

    EIN 332764638 · Headquarters: MOUNT HOREB, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. Eco-justice Center Inc

    EIN 453737333 · Headquarters: RACINE, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  14. Eco-vision Sustainable Learning Center Inc

    EIN 264713933 · Headquarters: Delavan, WI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  15. Ecointernet Inc

    EIN 465151190 · Headquarters: DENMARK, WI, US · Environment · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  16. Elkhart Lake Improvement Association Inc

    EIN 611774646 · Headquarters: Elkhart Lake, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  17. Elkhorn Garden Club

    EIN 391509526 · Headquarters: Elkhorn, WI, US · Environment · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  18. Ellies Fund Inc

    EIN 270988014 · Headquarters: Green Bay, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  19. Elroy Sparta National Trail Inc

    EIN 391421926 · Headquarters: Kendall, WI, US · Environment · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  20. Energy Exchange Inc

    EIN 451961742 · Headquarters: Milwaukee, WI, US · Environment · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  21. Enhance Alma Inc

    EIN 471827905 · Headquarters: NELSON, WI, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  22. Environment & Public Health Network for Chinese Students and Scholars

    EIN 208074643 · Headquarters: MADISON, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  23. Environmental Alliance-us-china Environmental Fund Corp

    EIN 391615129 · Headquarters: Mount Horeb, WI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  24. Environmental Data Institute Inc

    EIN 394573614 · Headquarters: Madison, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  25. Environmental Education Research and Compliance Assistance Foundation Inc

    EIN 202780545 · Headquarters: Oconto, WI, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  26. Environmental Sustainability Rotarian Action Group Inc

    EIN 814245059 · Headquarters: Madison, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  27. Fair Future Movement Inc

    EIN 830373300 · Headquarters: Milwaukee, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. Fair Rates for Wisconsin's Dairyland Inc

    EIN 472854052 · Headquarters: MILWAUKEE, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  29. Farms Not Factories Inc

    EIN 320547573 · Headquarters: Bayfield, WI, US · Environment · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  30. Fay Lake Association

    EIN 264681386 · Headquarters: SHEBOYGAN, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  31. Faye Gehl Conservation Foundation

    EIN 391802487 · Headquarters: HARTLAND, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  32. Fdl Long Lake Preservation Association Inc

    EIN 261473106 · Headquarters: cascade, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  33. Fisching 4 Change Foundation Inc

    EIN 822551375 · Headquarters: PLYMOUTH, WI, USA · Environment · Latest available filing year: 2018 · Primary form: IRS Form 990

  34. Fish Lake Property Owners Association Inc

    EIN 262843441 · Headquarters: Danbury, WI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  35. Flambeau Area Trail Tenders

    EIN 930834194 · Headquarters: HOLCOMBE, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  36. Flannel River Inc

    EIN 882215547 · Headquarters: River Falls, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  37. Flannery Velvet Lake Association Inc

    EIN 421687373 · Headquarters: Rhinelander, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  38. Florence County Lakes and Rivers Association Inc

    EIN 392003054 · Headquarters: Florence, WI, US · Environment · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  39. Flowagepreservationallianceinc

    EIN 273099323 · Headquarters: CONOVER, WI, US · Environment · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  40. Fond Du Lac County Audubon Society

    EIN 391625975 · Headquarters: Fond du Lac, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  41. Fond Du Lac County Master Gardner Association

    EIN 391959258 · Headquarters: Fond du Lac, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  42. Fontana Garden Club Inc

    EIN 264308607 · Headquarters: FONTANA, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  43. Forest County Association of Lakes

    EIN 331190461 · Headquarters: Pickerel, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  44. Forest County Atv Association

    EIN 481284483 · Headquarters: LAONA, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  45. Forest County Emergency Responders Association

    EIN 274713464 · Headquarters: Laona, WI, US · Environment · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  46. Forest Exploration Center Inc

    EIN 270693732 · Headquarters: Wauwatosa, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  47. Forest Home Historic Preservation Association Inc

    EIN 391477238 · Headquarters: MILWAUKEE, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  48. Forest Lake Association Inc

    EIN 391502512 · Headquarters: Land O Lakes, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  49. Forest Lake Preservation Foundation Inc

    EIN 842101553 · Headquarters: Land O Lakes, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  50. Forest Voice Inc

    EIN 274502237 · Headquarters: Glenwood City, WI, US · Environment · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  51. Fort Atkinson Wisconservation Club Inc

    EIN 391348311 · Headquarters: FORT ATKINSON, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  52. Forward Endowment Trust

    EIN 396570412 · Headquarters: GREEN BAY, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  53. Foundation for Wildlife Conservation Three Inc

    EIN 391766359 · Headquarters: MILWAUKEE, WI, USA · Environment · Latest available filing year: 2016 · Primary form: IRS Form 990

  54. Fountain City Rod and Gun Club Inc

    EIN 932212671 · Headquarters: FOUNTAIN CITY, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  55. Fox Cities Greenways Inc

    EIN 391810728 · Headquarters: Menasha, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  56. Fox Lake Preservation Organization Inc

    EIN 462149069 · Headquarters: Fox Lake, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  57. Fox River Watershed C a U S E Inc

    EIN 391974397 · Headquarters: Waterford, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  58. Fox Valley Beekeepers Wi

    EIN 932394209 · Headquarters: Greenville, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  59. Fox-Wisconsin Heritage Parkway

    EIN 270909700 · Headquarters: Appleton, WI, US · Environment · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  60. Foxhead Regenerative Agriculture Project

    EIN 862144959 · Headquarters: GREEN LAKE, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  61. Franklin Lake Improvement Association

    EIN 333854420 · Headquarters: Madison, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  62. Freshair Collective

    EIN 933024294 · Headquarters: Milwaukee, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  63. Friends of Allen Centennial Gardens

    EIN 461481031 · Headquarters: Madison, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  64. Friends of Amsterdam Dunes Inc

    EIN 270724535 · Headquarters: Cedar Grove, WI, US · Environment · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  65. Friends of Back Bay Park Ltd

    EIN 473603132 · Headquarters: MILWAUKEE, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  66. Friends of Beaver Lake Inc

    EIN 721586183 · Headquarters: HARTLAND, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  67. Friends of Belmont Mound State Park

    EIN 851387605 · Headquarters: BELMONT, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  68. Friends of Big Ripley Lake Associat Ion Inc

    EIN 332778227 · Headquarters: Shell Lake, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  69. Friends of Brunet Island State Park Inc

    EIN 843676912 · Headquarters: Cornell, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  70. Friends of Cherokee Marsh Inc

    EIN 770689194 · Headquarters: MADISON, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. Friends of Clear Lake Inc

    EIN 834699393 · Headquarters: Weston, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  72. Friends of Crex Inc

    EIN 391524915 · Headquarters: GRANTSBURG, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  73. Friends of D D Kennedy Environmental Area Inc

    EIN 743040086 · Headquarters: Amery, WI, US · Environment · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  74. Friends of Devils Lake State Park Inc

    EIN 391867786 · Headquarters: BARABOO, WI, USA · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990

  75. Friends of Douglas Creek Watershed & Melrose Mill Pond Inc

    EIN 383806983 · Headquarters: Melrose, WI, US · Environment · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  76. Friends of Dutch Hollow Lake Inc

    EIN 844278485 · Headquarters: La Valle, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  77. Friends of Echo Lake and Dam

    EIN 881682706 · Headquarters: BURLINGTON, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  78. Friends of Fence Lake Inc

    EIN 921322384 · Headquarters: WOODRUFF, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  79. Friends of Finger Lake Incorporated

    EIN 391910858 · Headquarters: Eagle River, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  80. Friends of Fitchburg Wisconsin Park S and Natural Areas Inc

    EIN 394643086 · Headquarters: Fitchburg, WI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  81. Friends of Fontana Inc

    EIN 244309172 · Headquarters: Fontana, WI, US · Environment · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  82. Friends of Foxfire Society

    EIN 331081285 · Headquarters: MARSHFIELD, WI, US · Environment · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  83. Friends of Fred Smith Inc

    EIN 391811818 · Headquarters: PHILLIPS, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  84. Friends of Governor Dodge State Park

    EIN 391858402 · Headquarters: DODGEVILLE, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  85. Friends of Governor Nelson State Park

    EIN 992288846 · Headquarters: Waunakee, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  86. Friends of Governor Thompson State Park Corporation

    EIN 810653723 · Headquarters: WAUSAUKEE, WI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  87. Friends of Harrington Beach State Park Inc

    EIN 391624645 · Headquarters: BELGIUM, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  88. Friends of Hickory Ridge Trail Inc

    EIN 392028570 · Headquarters: CHIPPEWA FALLS, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  89. Friends of High Cliff State Park

    EIN 391911880 · Headquarters: SHERWOOD, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  90. Friends of Horicon Marsh International Education Center Inc

    EIN 391807809 · Headquarters: HORICON, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  91. Friends of Horicon National Wildlife Refuge

    EIN 392044842 · Headquarters: Mayville, WI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  92. Friends of Indian Lake County Park

    EIN 273098589 · Headquarters: Madison, WI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  93. Friends of Jackson Jt Parks & Recreation

    EIN 454554725 · Headquarters: Jackson, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  94. Friends of Kickapoo Valley Reserve Inc

    EIN 820575831 · Headquarters: La Farge, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  95. Friends of Kishwauketoe

    EIN 391730233 · Headquarters: WILLIAMS BAY, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  96. Friends of Lac Lawrann Conservancy Inc

    EIN 391814258 · Headquarters: WEST BEND, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  97. Friends of Lake Altoona

    EIN 922708212 · Headquarters: Altoona, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  98. Friends of Lake Henry Inc

    EIN 933080596 · Headquarters: BLAIR, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  99. Friends of Lake Kegonsa Society Inc

    EIN 391610232 · Headquarters: Stoughton, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  100. Friends of Lake Mohawksin Inc

    EIN 205174916 · Headquarters: Tomahawk, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

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