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. Society of Critical Care Anesthesiologists

    EIN 363422600 · Headquarters: MILWAUKEE, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  2. Society of Fire Protection Engineers

    EIN 391429736 · Headquarters: WAUKESHA, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  3. Society of Human Resource Professionals

    EIN 391627430 · Headquarters: Waukesha, WI, US · Unknown & Unclassified · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  4. Society of Industrial and Office Realtors of Wisconsin Inc

    EIN 472102199 · Headquarters: MILWAUKEE, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  5. Society of Manufacturing Engineers

    EIN 391344625 · Headquarters: Schofield, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  6. Society of Manufacturing Engineers

    EIN 391577672 · Headquarters: Menomonie, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  7. Society of Manufacturing Engineers

    EIN 396057308 · Headquarters: Lodi, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  8. Society of Manufacturing Engineers

    EIN 396065189 · Headquarters: Green Bay, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  9. Society of Manufacturing Engineers

    EIN 396078340 · Headquarters: Waukesha, WI, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  10. Society of Manufacturing Engineers

    EIN 396102243 · Headquarters: Franksville, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  11. Society of Marketing Professional Services

    EIN 391709789 · Headquarters: Brookfield, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  12. Society of Mayflower Descendants in the State of Wisconsin

    EIN 396056041 · Headquarters: Brookfield, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. Society of Phi Zeta

    EIN 223103617 · Headquarters: Madison, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  14. Society of Pi Kappa Lambda

    EIN 396132079 · Headquarters: Appleton, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  15. Society of Plastics Engineers 09 Milwaukee Section

    EIN 396078406 · Headquarters: BROOKFIELD, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  16. Society of Risk Management Consultants

    EIN 363388306 · Headquarters: MADISON, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  17. Society of St Vincent De Paul Council of the Untied States

    EIN 390859328 · Headquarters: Butler, WI, US · Unknown & Unclassified · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  18. Society of St Vincent De Paul of Waukesha Co Our Lady of Guadalupe

    EIN 932256031 · Headquarters: Waukesha, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  19. Society of St Vincent De Paul of Waukesha County Inc

    EIN 261114266 · Headquarters: Menomonee Falls, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  20. Society of St Vincent De Paul of Waukesha County Inc

    EIN 352341344 · Headquarters: Muskego, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  21. Society of St Vincent De Paul St John the Baptist Conference

    EIN 391772764 · Headquarters: Plymouth, WI, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  22. Society of St Vincent De Paul- Fond Du Lac County

    EIN 390824875 · Headquarters: FOND DU LAC, WI, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  23. Society of St Vincent De Paul-epiphany of the Lord Conferen

    EIN 994854027 · Headquarters: Sun Prairie, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  24. Society of St Vincent De Paul-st Mary Parish Burlington Conference

    EIN 320311126 · Headquarters: burlington, WI, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  25. Society of St Vincent De Paul-Two Rivers Inc

    EIN 391782385 · Headquarters: Two Rivers, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  26. Society of St Vincent Depaul Ozaukee County District Councilinc

    EIN 391183072 · Headquarters: PORT WASHINGTON, WI, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  27. Society of Systematic Biologists

    EIN 526041714 · Headquarters: WINDSOR, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  28. Society of the Holy Spirit Inc

    EIN 237168006 · Headquarters: NESHKORO, WI, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  29. Society of the War of 1812 in the State of Wisconsin

    EIN 900374725 · Headquarters: Menomonee Falls, WI, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  30. Society of Women Engineers

    EIN 271462216 · Headquarters: platteville, WI, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  31. Society of Women Engineers

    EIN 391376997 · Headquarters: Appleton, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  32. Society of Women Engineers

    EIN 431607250 · Headquarters: Madison, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  33. Soil & Water Conservation Society

    EIN 237037691 · Headquarters: Wisconsin Rapids, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  34. Soil Science Society of America Inc

    EIN 390967853 · Headquarters: MADISON, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  35. Sojourner's Journey Inc Po Box 244

    EIN 270195666 · Headquarters: SPARTA, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  36. Sokolsokolice Milwaukee

    EIN 396058690 · Headquarters: OSHKOSH, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  37. Soldiers Grove Lioness Club

    EIN 810605948 · Headquarters: Soldiers Grove, WI, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  38. Soldiers Home Foundation Inc

    EIN 201300617 · Headquarters: MILWAUKEE, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  39. Soldiers Memorial Restoration Fund

    EIN 273324505 · Headquarters: Necedah, WI, US · Unknown & Unclassified · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  40. Solekind Inc

    EIN 334941984 · Headquarters: Milwaukee, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  41. Solid Reasons Inc

    EIN 273648976 · Headquarters: Milwaukee, WI, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  42. Solid Rock Christian Church Inc

    EIN 391651811 · Headquarters: OSSEO, WI, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  43. Solid Waste Association of North America Inc

    EIN 391698017 · Headquarters: Stevens Point, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  44. Solorlaget I Amerika

    EIN 411463823 · Headquarters: Madison, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  45. Somers United Church and Community Foundation Inc

    EIN 391500660 · Headquarters: SOMERS, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  46. Somerset Area Chamber of Commerce

    EIN 391467334 · Headquarters: Somerset, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  47. Somerset Club Inc

    EIN 391168207 · Headquarters: RACINE, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  48. Somerset Community Food Pantry Inc

    EIN 471434571 · Headquarters: SOMERSET, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  49. Somerset Education Association - Sea

    EIN 237086959 · Headquarters: MADISON, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  50. Somerset Memorial Scholarship Fund Inc

    EIN 391537911 · Headquarters: SOMERSET, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  51. Somerset Sno Sports Inc

    EIN 300637513 · Headquarters: Somerset, WI, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  52. Somerset Youth Robotics Incorporated

    EIN 814195433 · Headquarters: Houlton, WI, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  53. Sommer Family Foundation Inc

    EIN 363218800 · Headquarters: MILWAUKEE, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  54. Sonnentag Foundation Ltd

    EIN 391597420 · Headquarters: MARATHON, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  55. Sons of Amvets Department of Wisconsin

    EIN 455610673 · Headquarters: Greenfield, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  56. Sons of Norway

    EIN 237360847 · Headquarters: Black River Falls, WI, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  57. Sons of Norway

    EIN 237403177 · Headquarters: Stoughton, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  58. Sons of Norway

    EIN 237425416 · Headquarters: BELOIT, WI, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  59. Sons of Norway

    EIN 237525788 · Headquarters: Cameron, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  60. Sons of Norway

    EIN 237525794 · Headquarters: Somerset, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  61. Sons of Norway

    EIN 237525801 · Headquarters: Dodgeville, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  62. Sons of Norway

    EIN 237525802 · Headquarters: STRUM, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  63. Sons of Norway

    EIN 237525803 · Headquarters: Mount Pleasant, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  64. Sons of Norway

    EIN 237525805 · Headquarters: Stoughton, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  65. Sons of Norway

    EIN 237525807 · Headquarters: Viroqua, WI, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  66. Sons of Norway

    EIN 237525809 · Headquarters: Westby, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  67. Sons of Norway

    EIN 391235705 · Headquarters: WAUSAU, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  68. Sons of Norway

    EIN 391240189 · Headquarters: La Crosse, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  69. Sons of Norway

    EIN 391311913 · Headquarters: Portage, WI, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  70. Sons of Norway

    EIN 391378643 · Headquarters: Nekoosa, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  71. Sons of Norway

    EIN 391473497 · Headquarters: AMHERST, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  72. Sons of Norway

    EIN 391705205 · Headquarters: Marshfield, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  73. Sons of Norway

    EIN 391774770 · Headquarters: Plover, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  74. Sons of Norway

    EIN 391788732 · Headquarters: Galesville, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  75. Sons of Norway

    EIN 391810830 · Headquarters: De Pere, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  76. Sons of Norway

    EIN 391828500 · Headquarters: Mondovi, WI, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  77. Sons of Norway

    EIN 391855870 · Headquarters: Monroe, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  78. Sons of Norway

    EIN 391985181 · Headquarters: WALWORTH, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  79. Sons of Norway

    EIN 396039880 · Headquarters: Eau Claire, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  80. Sons of Norway

    EIN 510137522 · Headquarters: APPLETON, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  81. Sons of Norway

    EIN 510172779 · Headquarters: New Richmond, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  82. Sons of Norway

    EIN 510172788 · Headquarters: Sturgeon Bay, WI, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  83. Sons of Norway - Fosselyngen Lodge #82

    EIN 237525799 · Headquarters: MILWAUKEE, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  84. Sons of the American Legion

    EIN 800487074 · Headquarters: Neillsville, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  85. Sons of the American Legion Squadron 48

    EIN 994421682 · Headquarters: Beloit, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  86. Sons of the American Legion Squadron of Joseph J White

    EIN 843099883 · Headquarters: Wisconsin Rapids, WI, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  87. Sons of the Revolution in the State of Wi Inc

    EIN 391337470 · Headquarters: Cedarburg, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  88. Sons of Union Veterans of the Civil War

    EIN 237019088 · Headquarters: Stevens Point, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  89. Sons of Union Veterans of the Civil War

    EIN 237319909 · Headquarters: Madison, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  90. Sons of Union Veterans of the Civil War

    EIN 262016799 · Headquarters: Cudahy, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  91. Sons of Union Veterans of the Civil War

    EIN 391738970 · Headquarters: Cudahy, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  92. Sons of Union Veterans of the Civil War

    EIN 391945370 · Headquarters: Kaukauna, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  93. Sons of Union Veterans of the Civil War

    EIN 431762512 · Headquarters: Cudahy, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  94. Sons of Union Veterans of the Civil War

    EIN 473271266 · Headquarters: Wind Lake, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  95. Sons of Union Veterans of the Civil War

    EIN 611752162 · Headquarters: Wind Lake, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  96. Sons of Union Veterans of the Civil War

    EIN 911851787 · Headquarters: Eagle, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  97. Sons of Wisconsin Incorporated

    EIN 333400297 · Headquarters: Racine, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  98. Soo Line Historical & Technical Society

    EIN 391418948 · Headquarters: Appleton, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  99. Sophia B Mccomas Decd

    EIN 936019602 · Headquarters: MILWAUKEE, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  100. Sos Center Inc

    EIN 391566753 · Headquarters: MILWAUKEE, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

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