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. Medical Society of Milwaukee County

    EIN 390462783 · Headquarters: Kimberly, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  2. Meehan Family Foundation C/o Schumacher Sama Llp

    EIN 391445333 · Headquarters: WAUWATOSA, WI, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-PF

  3. Meeting Professionals International- Wisconsin Chapter Inc

    EIN 311011262 · Headquarters: COTTAGE GROVE, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  4. Melitta S and Joan M Pick Charitable Trust C/o George a Dionisopoulos

    EIN 237243490 · Headquarters: MILWAUKEE, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  5. Mellen Brownstone Center Inc

    EIN 862354925 · Headquarters: MELLEN, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  6. Mellen Education Association

    EIN 237086530 · Headquarters: MADISON, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  7. Melody Lodge No 2 Free and Accepted Masons

    EIN 237532396 · Headquarters: Dousman, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  8. Melrose First Responders Inc

    EIN 391743215 · Headquarters: Melrose, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  9. Melrose Mindoro Area Education Association

    EIN 237421632 · Headquarters: MADISON, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  10. Melvin S Cohen Foundation Inc

    EIN 396075009 · Headquarters: EAU CLAIRE, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  11. Mema Solidarity Community Center

    EIN 994415254 · Headquarters: Milwaukee, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  12. Members First Credit Union

    EIN 391019822 · Headquarters: MADISON, WI, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  13. Memorial Community Hospital Auxiliary

    EIN 030386418 · Headquarters: EDGERTON, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  14. Memorial Fund

    EIN 830416115 · Headquarters: Eau Claire, WI, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  15. Memorial Healthcare Foundation Inc

    EIN 391775074 · Headquarters: FRIENDSHIP, WI, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  16. Memorial Healthcare Foundation Inc

    EIN 930840067 · Headquarters: Darlington, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  17. Memorial Pendarvis Endowment Trust

    EIN 391513799 · Headquarters: Mineral Poimt, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  18. Memorial Ride Fund of Jefferson County

    EIN 821407923 · Headquarters: Waterloo, WI, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  19. Menasha Education Fund

    EIN 391601440 · Headquarters: MENASHA, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  20. Menasha Historical Society

    EIN 391560800 · Headquarters: Menasha, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  21. Menominee Non-teachers

    EIN 391852013 · Headquarters: MADISON, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  22. Menominee Teachers Education Association

    EIN 391279878 · Headquarters: MADISON, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  23. Menomonee Falls Historical Society

    EIN 391377166 · Headquarters: Menomonee Falls, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  24. Menomonee Falls Library Friends Inc

    EIN 391815387 · Headquarters: MENOMONEE FALLS, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  25. Menomonee Falls Little League Inc

    EIN 391689868 · Headquarters: MENOMONEE FALLS, WI, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990

  26. Menomonee Falls Pre-school Co-operative

    EIN 391035857 · Headquarters: MENOMONEE FALLS, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  27. Menomonee Falls Saddle Club Inc

    EIN 391099708 · Headquarters: Menomonee Falls, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. Menomonee Falls Scholarship and Educational

    EIN 391684911 · Headquarters: MENOMONEE FALLS, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  29. Menomonee Falls Soccer Club Inc

    EIN 232355821 · Headquarters: Menomonee Falls, WI, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  30. Menomonee Falls Symphony Orchestra

    EIN 237083447 · Headquarters: Menomonee Falls, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  31. Menomonie Area Chamber of Commerce

    EIN 390733759 · Headquarters: MENOMONIE, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  32. Menomonie Chapter 682 Women of the Moose

    EIN 237521645 · Headquarters: Menomonie, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  33. Menomonie Lodge No 1584 Loyal Order of Moose

    EIN 237138646 · Headquarters: MENOMONIE, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  34. Menomonie Youth Sports

    EIN 391392551 · Headquarters: Menomonie, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  35. Mensa of Wisconsin Foundation Inc

    EIN 391578568 · Headquarters: Kenosha, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  36. Mensa of Wisconsin Inc

    EIN 396284973 · Headquarters: Green Bay, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  37. Mequon Historical Society Inc

    EIN 391585856 · Headquarters: Thiensville, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  38. Mequon Police Association Inc

    EIN 391847359 · Headquarters: Thiensville, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  39. Mequon Thiensville Sunrise Rotary Club

    EIN 391677343 · Headquarters: THIENSVILLE, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  40. Mequon Womans Club Inc

    EIN 396056482 · Headquarters: Mequon, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  41. Mequon-Thiensville Area Chamber of Commerce And Industry Inc

    EIN 391380802 · Headquarters: Mequon, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  42. Mequon-thiensville Education Association

    EIN 237447943 · Headquarters: MADISON, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  43. Meraki Church Inc

    EIN 922538730 · Headquarters: Deforest, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  44. Mercedes Benz Club of America

    EIN 453935608 · Headquarters: Janesville, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  45. Mercer Area Snogoers Inc

    EIN 453081593 · Headquarters: MERCER, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  46. Mercer Education Association

    EIN 262770776 · Headquarters: MADISON, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  47. Merkel Foundation Inc

    EIN 391582624 · Headquarters: BROOKFIELD, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  48. Merl Hood Memorial Tuw

    EIN 421180466 · Headquarters: MILWAUKEE, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  49. Merrill Area Chamber of Commerce

    EIN 390738828 · Headquarters: MERRILL, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  50. Merrill Area Concert Association Ltd

    EIN 391354028 · Headquarters: Merrill, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  51. Merrill Area Development Corporation

    EIN 396081116 · Headquarters: merrill, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  52. Merrill Baseball Hall of Fame

    EIN 010948468 · Headquarters: Merrill, WI, US · Unknown & Unclassified · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  53. Merrill Education Support Personnel Association

    EIN 392036402 · Headquarters: MADISON, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  54. Merrill Forward Together Inc

    EIN 391737222 · Headquarters: MERRILL, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  55. Merrill Historical Society Inc

    EIN 391319203 · Headquarters: MERRILL, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  56. Merrill Memorial Park Inc

    EIN 390466070 · Headquarters: MERRILL, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  57. Merrill Teachers Association

    EIN 237088290 · Headquarters: MADISON, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  58. Merrimac Volunteer Fire Department

    EIN 237333748 · Headquarters: MERRIMAC, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  59. Mertie & Harley Stevens Memorial Fund

    EIN 936053655 · Headquarters: MILWAUKEE, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  60. Messer Cutting Systems Sunshine Club

    EIN 473292826 · Headquarters: Menomonee Falls, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  61. Messmer Foundation Inc

    EIN 366117571 · Headquarters: MILWAUKEE, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  62. Meta House

    EIN 391017822 · Headquarters: Milwaukee, WI, United States · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  63. Metastar Inc

    EIN 391332612 · Headquarters: MADISON, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  64. Methodist Manor of Waukesha Inc

    EIN 391739567 · Headquarters: WEST ALLIS, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  65. Metro Builders Association Of Greater Milwaukee

    EIN 390743789 · Headquarters: Waukesha, Wisconsin, United States · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  66. Metro Chapter Wspe

    EIN 271371189 · Headquarters: Waukesha, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  67. Metro Milwaukee Shrm Inc

    EIN 391131159 · Headquarters: COTTAGE GROVE, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  68. Metro Omaha Police & Fire Fn Agency

    EIN 476062421 · Headquarters: MILWAUKEE, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  69. Metropolitan Milwaukee Association of Commerce

    EIN 390475230 · Headquarters: MILWAUKEE, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  70. Metropolitan Milwaukee Fair Housing Council Inc

    EIN 391286685 · Headquarters: MILWAUKEE, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  71. Metropolitan Refuse District

    EIN 390989685 · Headquarters: MIDDLETON, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  72. Metropolitan Womans Club of Madison Wisconsin

    EIN 237292397 · Headquarters: MIDDLETON, WI, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  73. MH Rohingya Wellfare of Milwaukee Incorporated

    EIN 881092642 · Headquarters: Milwaukee, WI, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ

  74. Micah Project Ltd

    EIN 824008294 · Headquarters: Janesville, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  75. Michael Hellenbrand Memorial Fund Inc

    EIN 871865628 · Headquarters: Cross Plains, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  76. Michaelbjorkgbsfund

    EIN 465273525 · Headquarters: Janesville, WI, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  77. Michelle & Craig Auerbach Scholarship

    EIN 391503549 · Headquarters: Fort Atkinson, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  78. Michelle Leigh Grubbs

    EIN 205037658 · Headquarters: Hudson, WI, US · Unknown & Unclassified · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  79. Mick a Naulin Foundation Ltd

    EIN 237350977 · Headquarters: LANNON, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  80. Mid America Burger King Franchisee Association Inc

    EIN 421443881 · Headquarters: Chippewa Falls, WI, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  81. Mid Moraine Municipal Assoc

    EIN 391390509 · Headquarters: Slinger, WI, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  82. Mid State Aero Guidance Club

    EIN 800664992 · Headquarters: Marshfield, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  83. Mid-america Chamber Executives

    EIN 900846733 · Headquarters: WAUPACA, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  84. Mid-continent Railway Historical Society Inc

    EIN 391023326 · Headquarters: NORTH FREEDOM, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  85. Mid-state Associate Staff Organization

    EIN 262707455 · Headquarters: MADISON, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  86. Mid-state Faculty Association

    EIN 237094922 · Headquarters: MADISON, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  87. Mid-state Repeater Association Inc

    EIN 391639331 · Headquarters: Mosinee, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  88. Mid-state Technical College Education Support Professionals

    EIN 201610030 · Headquarters: MADISON, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  89. Mid-state Youth Football & Cheerleading Conference Inc

    EIN 205283951 · Headquarters: OSHKOSH, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  90. Mid-state Youth Football & Cheerleading Conference Inc

    EIN 432065110 · Headquarters: Iola, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  91. Mid-state Youth Football & Cheerleading Conference Inc

    EIN 830462628 · Headquarters: weyauwega, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  92. Mid-west Care Managers Mcm

    EIN 061682466 · Headquarters: Sheboygan, WI, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  93. Middleton Area Development Corporation C/o Jeff Zwettler

    EIN 391288135 · Headquarters: MIDDLETON, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  94. Middleton Area Good Neighbors Inc

    EIN 843024834 · Headquarters: Middleton, WI, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  95. Middleton Area Historical Society

    EIN 237287457 · Headquarters: MIDDLETON, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  96. Middleton Cemetery Association C/o Richard Bakken

    EIN 390469793 · Headquarters: MIDDLETON, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  97. Middleton Cemetery Association Trust C/o Richard Bakken

    EIN 396038258 · Headquarters: MIDDLETON, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  98. Middleton Chamber of Commerce Inc

    EIN 390895486 · Headquarters: MIDDLETON, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  99. Middleton Eaa Chapter No 1389

    EIN 432056265 · Headquarters: MADISON, WI, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  100. Middleton Educational Staff Association

    EIN 800118575 · Headquarters: Madison, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

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