Unknown & Unclassified nonprofits in Wisconsin

Unknown & Unclassified nonprofits in Wisconsin. Browse 13,737 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. Lake Monona Sailing Club Inc

    EIN 237329346 · Headquarters: Madison, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  2. Lake Noquebay Sportmans Club Inc

    EIN 371610614 · Headquarters: WAUSAUKEE, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  3. Lake Ripley Institute Inc

    EIN 396076760 · Headquarters: Racine, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  4. Lake Superior Elementary Pto

    EIN 842820479 · Headquarters: SUPERIOR, WI, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  5. Lake Superior Life Care Center

    EIN 411435113 · Headquarters: SUPERIOR, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  6. Lake Superior Quarter Horse Assoc Inc

    EIN 900796301 · Headquarters: Ashland, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  7. Lake Wapogasset and Bear Trap Improvement Association Inc

    EIN 391848617 · Headquarters: Amery, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. Lake Waubesa Bible Camp Inc

    EIN 391055470 · Headquarters: MC FARLAND, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  9. Lake Waubesa Conservation

    EIN 391660933 · Headquarters: MCFARLAND, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  10. Lake Wausau Association Inc Po Box 2085

    EIN 391616549 · Headquarters: Wausau, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  11. Lake Wissota Yacht Club Inc

    EIN 391172491 · Headquarters: CHIPPEWA FLS, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  12. Lakeland Audubon Society Inc

    EIN 237043226 · Headquarters: ELKHORN, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  13. Lakeland Builders Association

    EIN 391420187 · Headquarters: ELKHORN, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  14. Lakeland Community Garden

    EIN 272516865 · Headquarters: Woodruff, WI, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  15. Lakeland Conservancy Inc

    EIN 391565629 · Headquarters: Minocqua, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  16. Lakeland Education Association

    EIN 412011740 · Headquarters: MADISON, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  17. Lakeland Family Resource Center Inc

    EIN 391842386 · Headquarters: SPOONER, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  18. Lakeland Hawks Ice Association Inc

    EIN 391452899 · Headquarters: MINOCQUA, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  19. Lakeland Little League Inc

    EIN 391356281 · Headquarters: BRISTOL, WI, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  20. Lakeland Minocqua Rotary Club

    EIN 391252122 · Headquarters: MINOCQUA, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  21. Lakeland Nordic Ski Club

    EIN 473085708 · Headquarters: Minocqua, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  22. Lakeland Performing Arts Association Inc

    EIN 930835409 · Headquarters: MINOCQUA, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  23. Lakeland Retirement Foundation

    EIN 391306202 · Headquarters: Woodruff, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  24. Lakeland Rotary Interact Club

    EIN 473283406 · Headquarters: Minocqua, WI, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  25. Lakeland Union High School Education Association

    EIN 371568535 · Headquarters: MADISON, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  26. Lakesdrift Riders Snowmobile Club Inc

    EIN 237195392 · Headquarters: Springfield, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  27. Lakeshore Beagle Club

    EIN 396102633 · Headquarters: Greenleaf, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. Lakeshore Bowhunters Ltd

    EIN 391830498 · Headquarters: Fond du Lac, WI, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  29. Lakeshore Bully Club Incorporated

    EIN 274805511 · Headquarters: Sheboygan, WI, US · Unknown & Unclassified · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  30. Lakeshore Cap Inc of Wisconsin

    EIN 391214392 · Headquarters: MANITOWOC, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  31. Lakeshore Childcare Center Inc

    EIN 391287510 · Headquarters: Manitowoc, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  32. Lakeshore Chorale Inc

    EIN 391602546 · Headquarters: SHEBOYGAN FLS, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  33. Lakeshore Club of Oshkosh Inc

    EIN 396076080 · Headquarters: OSHKOSH, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  34. Lakeshore Communications Inc

    EIN 363386532 · Headquarters: DE PERE, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  35. Lakeshore Display Employee Benefit Trust Foundation

    EIN 391514723 · Headquarters: SHEBOYGAN, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  36. Lakeshore Driftbusters Snowmobile Club

    EIN 391491603 · Headquarters: CLEVELAND, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  37. Lakeshore Education Association

    EIN 391675764 · Headquarters: MADISON, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  38. Lakeshore Farm Mgmt Association

    EIN 390985314 · Headquarters: VALDERS, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  39. Lakeshore Lutherans for Life

    EIN 391631235 · Headquarters: Luxemburg, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  40. Lakeshore Pax Christi

    EIN 830713543 · Headquarters: Manitowoc, WI, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  41. Lakeshore Snowmobile Club Limited

    EIN 391398729 · Headquarters: manitowoc, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  42. Lakeshore Sports Car Club

    EIN 201710642 · Headquarters: SHAWANO, WI, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  43. Lakeshore Technical College Foundation Inc

    EIN 391269078 · Headquarters: CLEVELAND, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  44. Lakeshore Wind Ensemble Association Inc

    EIN 391601172 · Headquarters: MANITOWOC, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  45. Lakeside Lutheran High School

    EIN 390991964 · Headquarters: LAKE MILLS, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-T

  46. Lakeside Quilters Club

    EIN 391900966 · Headquarters: Oshkosh, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  47. Lakeview Association

    EIN 812695504 · Headquarters: Cambridge, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  48. Lakeview Community Pta

    EIN 392007748 · Headquarters: WHITEWATER, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  49. Lakeway Inc

    EIN 391787827 · Headquarters: Pewaukee, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  50. Lakewood Firefighters Association Inc

    EIN 391632840 · Headquarters: LAKEWOOD, WI, USA · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-EZ

  51. Lamartine Volunteer Fire Company

    EIN 391100920 · Headquarters: Oakfield, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  52. Lambda Chi Alpha Fraternity Inc

    EIN 237135266 · Headquarters: New Berlin, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  53. Lambda Chi Fraternity Inc

    EIN 320442666 · Headquarters: Whitewater, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  54. Lambda Kappa Sigma - Beta Epsilon

    EIN 332731035 · Headquarters: MUSKEGO, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  55. Lambda Kappa Sigma Alumni Association

    EIN 392238894 · Headquarters: MUSKEGO, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  56. Lambda Kappa Sigma Inaternational

    EIN 911970409 · Headquarters: MUSKEGO, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  57. Lambda Kappa Sigma International

    EIN 046156665 · Headquarters: MUSKEGO, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  58. Lambda Kappa Sigma International

    EIN 046156669 · Headquarters: MUSKEGO, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  59. Lambda Kappa Sigma International

    EIN 046156670 · Headquarters: MUSKEGO, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  60. Lambda Kappa Sigma International

    EIN 056020778 · Headquarters: MUSKEGO, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  61. Lambda Kappa Sigma International

    EIN 061309700 · Headquarters: MUSKEGO, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  62. Lambda Kappa Sigma International

    EIN 066090112 · Headquarters: MUSKEGO, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  63. Lambda Kappa Sigma International

    EIN 116083856 · Headquarters: MUSKEGO, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  64. Lambda Kappa Sigma International

    EIN 116083909 · Headquarters: MUSKEGO, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  65. Lambda Kappa Sigma International

    EIN 141745377 · Headquarters: MUSKEGO, WI, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  66. Lambda Kappa Sigma International

    EIN 146038664 · Headquarters: MUSKEGO, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  67. Lambda Kappa Sigma International

    EIN 166076549 · Headquarters: MUSKEGO, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  68. Lambda Kappa Sigma International

    EIN 226092336 · Headquarters: MUSKEGO, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  69. Lambda Kappa Sigma International

    EIN 236429803 · Headquarters: MUSKEGO, WI, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  70. Lambda Kappa Sigma International

    EIN 236429804 · Headquarters: MUSKEGO, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  71. Lambda Kappa Sigma International

    EIN 236429805 · Headquarters: MUSKEGO, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  72. Lambda Kappa Sigma International

    EIN 237071600 · Headquarters: MUSKEGO, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  73. Lambda Kappa Sigma International

    EIN 237272140 · Headquarters: MUSKEGO, WI, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  74. Lambda Kappa Sigma International

    EIN 237388923 · Headquarters: MUSKEGO, WI, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  75. Lambda Kappa Sigma International

    EIN 256063733 · Headquarters: MUSKEGO, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  76. Lambda Kappa Sigma International

    EIN 256085650 · Headquarters: MUSKEGO, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  77. Lambda Kappa Sigma International

    EIN 256085651 · Headquarters: MUSKEGO, WI, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  78. Lambda Kappa Sigma International

    EIN 263853686 · Headquarters: MUSKEGO, WI, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  79. Lambda Kappa Sigma International

    EIN 263853739 · Headquarters: MUSKEGO, WI, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  80. Lambda Kappa Sigma International

    EIN 300586378 · Headquarters: MUSKEGO, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  81. Lambda Kappa Sigma International

    EIN 300586379 · Headquarters: MUSKEGO, WI, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  82. Lambda Kappa Sigma International

    EIN 336143289 · Headquarters: MUSKEGO, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  83. Lambda Kappa Sigma International

    EIN 346582558 · Headquarters: MUSKEGO, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  84. Lambda Kappa Sigma International

    EIN 356072255 · Headquarters: MUSKEGO, WI, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  85. Lambda Kappa Sigma International

    EIN 356072256 · Headquarters: MUSKEGO, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  86. Lambda Kappa Sigma International

    EIN 366079201 · Headquarters: MUSKEGO, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  87. Lambda Kappa Sigma International

    EIN 366164524 · Headquarters: MUSKEGO, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  88. Lambda Kappa Sigma International

    EIN 386143290 · Headquarters: MUSKEGO, WI, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  89. Lambda Kappa Sigma International

    EIN 386143291 · Headquarters: MUSKEGO, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  90. Lambda Kappa Sigma International

    EIN 426091433 · Headquarters: MUSKEGO, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  91. Lambda Kappa Sigma International

    EIN 436072536 · Headquarters: MUSKEGO, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  92. Lambda Kappa Sigma International

    EIN 473307884 · Headquarters: MUSKEGO, WI, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  93. Lambda Kappa Sigma International

    EIN 473455131 · Headquarters: MUSKEGO, WI, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  94. Lambda Kappa Sigma International

    EIN 473460005 · Headquarters: MUSKEGO, WI, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  95. Lambda Kappa Sigma International

    EIN 473473104 · Headquarters: MUSKEGO, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  96. Lambda Kappa Sigma International

    EIN 473519713 · Headquarters: MUSKEGO, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  97. Lambda Kappa Sigma International

    EIN 473537297 · Headquarters: MUSKEGO, WI, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  98. Lambda Kappa Sigma International

    EIN 526073661 · Headquarters: MUSKEGO, WI, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  99. Lambda Kappa Sigma International

    EIN 526073662 · Headquarters: MUSKEGO, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  100. Lambda Kappa Sigma International

    EIN 556030137 · Headquarters: MUSKEGO, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

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