Nonprofits in Wisconsin

Nonprofits in Wisconsin. Browse 46,682 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. Optimist International

    EIN 823485686 · Headquarters: Sussex, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  2. Optimist International

    EIN 832167964 · Headquarters: Chippewa Falls, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  3. Optimist International

    EIN 834098963 · Headquarters: Hartland, WI, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  4. Optimist International

    EIN 900054196 · Headquarters: Monroe, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  5. Optimist International

    EIN 900188815 · Headquarters: Hartford, WI, US · Youth Development · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  6. Optimist International

    EIN 900202003 · Headquarters: Dodgeville, WI, US · Youth Development · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  7. Optimist International

    EIN 900202192 · Headquarters: Marinette, WI, US · Youth Development · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  8. Optimist International

    EIN 900261111 · Headquarters: Fitchburg, WI, US · Youth Development · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  9. Optimist International

    EIN 900284089 · Headquarters: Mosinee, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  10. Optimist International

    EIN 900287295 · Headquarters: Fennimore, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  11. Optimist International

    EIN 900337724 · Headquarters: De Pere, WI, US · Youth Development · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  12. Optimist International

    EIN 900523109 · Headquarters: PLATTEVILLE, WI, US · Youth Development · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  13. Optimist International

    EIN 900528724 · Headquarters: COTTAGE GROVE, WI, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  14. Optimist International

    EIN 900577248 · Headquarters: Muskego, WI, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  15. Optimist International

    EIN 900602008 · Headquarters: River Falls, WI, US · Youth Development · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  16. Optimist International

    EIN 900767158 · Headquarters: Milwaukee, WI, US · Youth Development · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  17. Optimist International

    EIN 900874276 · Headquarters: Rhinelander, WI, US · Youth Development · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  18. Optimist International

    EIN 911832143 · Headquarters: Janesville, WI, US · Youth Development · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  19. Optimist International

    EIN 911866015 · Headquarters: Fond du Lac, WI, US · Youth Development · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  20. Optimist International

    EIN 911889288 · Headquarters: Arena, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  21. Optimist International

    EIN 912081042 · Headquarters: Waupaca, WI, US · Youth Development · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  22. Optimist International

    EIN 930787353 · Headquarters: Green Bay, WI, US · Youth Development · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  23. Optimist International

    EIN 930797706 · Headquarters: Wisconsin Rapids, WI, US · Youth Development · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  24. Optimist International

    EIN 930797709 · Headquarters: STOUGHTON, WI, US · Youth Development · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  25. Optimist International

    EIN 930819912 · Headquarters: beaver dam, WI, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  26. Optimist International

    EIN 930819913 · Headquarters: Kewaunee, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  27. Optimist International

    EIN 930819922 · Headquarters: Chilton, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  28. Optimist International

    EIN 931544322 · Headquarters: Waterford, WI, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  29. Optimist International 09205 OC of Wausau WI

    EIN 396080002 · Headquarters: Wausau, WI, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  30. Optimist International 23158 Everest Area WI

    EIN 237176955 · Headquarters: Schofield, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  31. Optimist Theatre

    EIN 391769252 · Headquarters: Milwaukee, WI, USA · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  32. Options for Independent Livinginc

    EIN 391843312 · Headquarters: GREEN BAY, WI, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  33. Options for Women-menomonie

    EIN 815348936 · Headquarters: Menomonie, WI, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  34. Options Fund

    EIN 391989709 · Headquarters: EAU CLAIRE, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  35. Options in Community Living Inc

    EIN 391373054 · Headquarters: MADISON, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  36. Options in Reproductive Care Inc

    EIN 391166634 · Headquarters: LA CROSSE, WI, USA · Health Care · Latest available filing year: 2019 · Primary form: IRS Form 990

  37. Options on 8

    EIN 391537061 · Headquarters: St Croix Falls, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  38. Oran Mcshan Grand Lodge

    EIN 473740592 · Headquarters: Milwaukee, WI, US · Unknown & Unclassified · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  39. Orang Utan Conservation Genetics Project Inc

    EIN 844515395 · Headquarters: APPLETON, WI, US · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  40. Orange and Blue Club Inc

    EIN 263656763 · Headquarters: Chippewa Falls, WI, US · Education · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  41. Orange Community Center

    EIN 743094241 · Headquarters: Webster, WI, US · Human Services · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  42. Orange Cross Ambulance Inc

    EIN 391860942 · Headquarters: SHEBOYGAN, WI, USA · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990

  43. Orban Foundation for Veterans

    EIN 825249889 · Headquarters: WEST BEND, WI, US · Mental Health & Crisis Intervention · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  44. Orbits Worldwide Inc

    EIN 271279662 · Headquarters: Middleton, WI, US · Health Care · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  45. ORC Industries, Inc.

    EIN 391078145 · Headquarters: La Crosse, WI, USA · Employment · Latest available filing year: 2024 · Primary form: IRS Form 990

  46. ORC Sheltered Friends Foundation

    EIN 872711393 · Headquarters: La Crosse, WI, USA · Employment · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  47. Orchard Lane Parent Faculty Council

    EIN 813767111 · Headquarters: New Berlin, WI, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  48. Orchard Ridge Elementary School Pto

    EIN 391477540 · Headquarters: Madison, WI, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  49. Orchard Ridge Neighborhood Association

    EIN 900466660 · Headquarters: Madison, WI, US · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  50. Orchard Valley Apartments Inc

    EIN 391338423 · Headquarters: OSHKOSH, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  51. Orchestra Inc

    EIN 364198703 · Headquarters: Madison, WI, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  52. Orchestra Parents Board of Wauwatosa East

    EIN 475374988 · Headquarters: Wauwatosa, WI, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  53. Orchestrating Good Inc

    EIN 843073898 · Headquarters: Burlington, WI, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  54. Orchid Growers Guild Inc

    EIN 391546732 · Headquarters: Madison, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  55. Orchids Fasd Services Wisconsin Inc

    EIN 264441127 · Headquarters: Sun Prairie, WI, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  56. Order of Adinkra

    EIN 932869899 · Headquarters: Sheboygan, WI, US · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  57. Order of Corpus Christi

    EIN 272357338 · Headquarters: Waukesha, WI, US · Mutual & Membership Benefit · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  58. Order of Eastern Star of the State of Wisconsin

    EIN 237534363 · Headquarters: Ellsworth, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  59. Order of St Alban Inc

    EIN 471423764 · Headquarters: Oshlosh, WI, US · Youth Development · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  60. Order of St Camillus Foundation Inc

    EIN 391925879 · Headquarters: WAUWATOSA, WI, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  61. Order of the Amaranth Inc

    EIN 237614595 · Headquarters: Beloit, WI, US · Crime & Legal Related · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  62. Order of the Amaranth Inc

    EIN 391307441 · Headquarters: Janesville, WI, US · Mutual & Membership Benefit · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  63. Order of the Amaranth Inc

    EIN 391427642 · Headquarters: Plymouth, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  64. Order of the Amaranth Inc Supreme C Ouncil

    EIN 237614588 · Headquarters: BROOKFIELD, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  65. Order of the Amaranth Inc Supreme Council

    EIN 237614102 · Headquarters: Bonduel, WI, US · Mutual & Membership Benefit · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  66. Order of the Amaranth Inc Supreme Council

    EIN 237614402 · Headquarters: Madison, WI, US · Mutual & Membership Benefit · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  67. Order of the Amaranth Inc Supreme Council

    EIN 237614592 · Headquarters: Union Grove, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  68. Order of the Amaranth Inc Supreme Council

    EIN 237614593 · Headquarters: Madison, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  69. Order of the Amaranth Inc Supreme Council

    EIN 396058537 · Headquarters: Kaukauna, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  70. Order of the Eastern Star of Minnesota

    EIN 416056466 · Headquarters: AMERY, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. Order of the Eastern Star of the State of Wi

    EIN 391487557 · Headquarters: Madison, WI, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  72. Order of the Eastern Star of the State of Wisconsin

    EIN 237534260 · Headquarters: Kewaunee, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  73. Order of the Eastern Star of the State of Wisconsin

    EIN 237534263 · Headquarters: Lodi, WI, US · Mutual & Membership Benefit · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  74. Order of the Eastern Star of the State of Wisconsin

    EIN 237534269 · Headquarters: Oconomowoc, WI, US · Science & Technology · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  75. Order of the Eastern Star of the State of Wisconsin

    EIN 237534271 · Headquarters: Blanchardville, WI, US · Mutual & Membership Benefit · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  76. Order of the Eastern Star of the State of Wisconsin

    EIN 237534274 · Headquarters: Sparta, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  77. Order of the Eastern Star of the State of Wisconsin

    EIN 237534277 · Headquarters: North Freedom, WI, US · Mutual & Membership Benefit · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  78. Order of the Eastern Star of the State of Wisconsin

    EIN 237534279 · Headquarters: La Crosse, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  79. Order of the Eastern Star of the State of Wisconsin

    EIN 237534280 · Headquarters: River Falls, WI, US · Mutual & Membership Benefit · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  80. Order of the Eastern Star of the State of Wisconsin

    EIN 237534285 · Headquarters: PLATTEVILLE, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  81. Order of the Eastern Star of the State of Wisconsin

    EIN 237534289 · Headquarters: Westby, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  82. Order of the Eastern Star of the State of Wisconsin

    EIN 237534291 · Headquarters: New Richmond, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  83. Order of the Eastern Star of the State of Wisconsin

    EIN 237534292 · Headquarters: MINERAL POINT, WI, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  84. Order of the Eastern Star of the State of Wisconsin

    EIN 237534293 · Headquarters: Mukwonago, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  85. Order of the Eastern Star of the State of Wisconsin

    EIN 237534300 · Headquarters: Stoughton, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  86. Order of the Eastern Star of the State of Wisconsin

    EIN 237534303 · Headquarters: Plover, WI, US · Mutual & Membership Benefit · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  87. Order of the Eastern Star of the State of Wisconsin

    EIN 237534312 · Headquarters: Evansville, WI, US · Mutual & Membership Benefit · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  88. Order of the Eastern Star of the State of Wisconsin

    EIN 237534314 · Headquarters: Edgerton, WI, US · Mutual & Membership Benefit · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  89. Order of the Eastern Star of the State of Wisconsin

    EIN 237534316 · Headquarters: Jefferson, WI, US · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  90. Order of the Eastern Star of the State of Wisconsin

    EIN 237534317 · Headquarters: Star Prairie, WI, US · Mutual & Membership Benefit · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  91. Order of the Eastern Star of the State of Wisconsin

    EIN 237534318 · Headquarters: Janesville, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  92. Order of the Eastern Star of the State of Wisconsin

    EIN 237534320 · Headquarters: Union Grove, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  93. Order of the Eastern Star of the State of Wisconsin

    EIN 237534324 · Headquarters: Milwaukee, WI, US · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  94. Order of the Eastern Star of the State of Wisconsin

    EIN 237534328 · Headquarters: River Falls, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  95. Order of the Eastern Star of the State of Wisconsin

    EIN 237534335 · Headquarters: Wisconsin Rapids, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  96. Order of the Eastern Star of the State of Wisconsin

    EIN 237534338 · Headquarters: Monroe, WI, US · Mutual & Membership Benefit · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  97. Order of the Eastern Star of the State of Wisconsin

    EIN 237534340 · Headquarters: KENOSHA, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  98. Order of the Eastern Star of the State of Wisconsin

    EIN 237534342 · Headquarters: Appleton, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  99. Order of the Eastern Star of the State of Wisconsin

    EIN 237534343 · Headquarters: Marshfield, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  100. Order of the Eastern Star of the State of Wisconsin

    EIN 237534346 · Headquarters: Star Prairie, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

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