Nonprofits in Mason City, Iowa

Nonprofits in Mason City, Iowa. Browse 255 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. 4-H Clubs & Affiliated 4-H Organizations

    EIN 421480962 · Headquarters: Mason City, IA, US · Youth Development · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  2. 4-H Clubs & Affiliated 4-H Organizations

    EIN 421511564 · Headquarters: Mason City, IA, US · Mutual & Membership Benefit · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  3. Ace Credit Union

    EIN 420693466 · Headquarters: MASON CITY, IA, USA · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990

  4. Ace Mentor Program of America Inc

    EIN 273151410 · Headquarters: Mason City, IA, US · Mutual & Membership Benefit · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  5. Aging Services Coalition of North Iowa

    EIN 464372258 · Headquarters: MASON CITY, IA, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  6. Agva Foundation

    EIN 823835135 · Headquarters: MASON CITY, IA, USA · Food, Agriculture & Nutrition · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  7. Al a Lake T W 3Cb537000 Norwest Bank of Des Moines Na Ttee

    EIN 426101549 · Headquarters: MASON CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  8. Al Yad

    EIN 611523699 · Headquarters: Mason City, IA, US · Human Services · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  9. Alano Society Inc of Mason City Iowa

    EIN 884042902 · Headquarters: Mason City, IA, US · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  10. American Federation of State County & Municipal Employees

    EIN 420650475 · Headquarters: MASON CITY, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  11. American Federation of State County & Municipal Employees

    EIN 421099571 · Headquarters: Mason City, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  12. American Legion

    EIN 426057901 · Headquarters: mason city, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. American Postal Workers Union

    EIN 237341118 · Headquarters: Mason City, IA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  14. Ancient Free & Accepted Masons of Iowa

    EIN 237503287 · Headquarters: Mason City, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  15. Arc of Iowa

    EIN 237074208 · Headquarters: Mason City, IA, US · Human Services · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  16. Arc of Iowa

    EIN 262558661 · Headquarters: Mason City, IA, US · Human Services · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  17. Association of Wa Tan Ye Clubs

    EIN 426084842 · Headquarters: Mason City, IA, US · Mutual & Membership Benefit · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  18. Bakery Confectionery Tobacco Workers and Grain Millers Intl Uni

    EIN 420571086 · Headquarters: Mason City, IA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  19. Baum Harmon Mercy Hospital

    EIN 421500277 · Headquarters: MASON CITY, IA, USA · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990

  20. Baum Harmon Mercy Hospital and Clinics Foundation

    EIN 262973307 · Headquarters: MASON CITY, IA, USA · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990

  21. Beasley Family Foundation Inc

    EIN 421263942 · Headquarters: MASON CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  22. Bella Center

    EIN 464193847 · Headquarters: Mason City, IA, US · Public & Societal Benefit · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  23. Benevolence Masonic Lodge 145

    EIN 237103942 · Headquarters: Mason City, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  24. Bertha Stebens Childrens Theatre Foundation

    EIN 421509580 · Headquarters: MASON CITY, IA, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  25. Beth E Reinhart Charitable Trust

    EIN 472304877 · Headquarters: MASON CITY, IA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  26. Betty Lou Schneider Scholarship Foundation

    EIN 270460280 · Headquarters: MASON CITY, IA, USA · Education · Latest available filing year: 2012 · Primary form: IRS Form 990-PF

  27. Big Gully Creek Foundation

    EIN 832088885 · Headquarters: MASON CITY, IA, US · Recreation & Sports · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  28. Blet Division 117 C/o Robert a Shannon

    EIN 237328658 · Headquarters: MASON CITY, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  29. Caring Pregnancy Center Inc

    EIN 421276848 · Headquarters: MASON CITY, IA, USA · Health Care · Latest available filing year: 2025 · Primary form: IRS Form 990

  30. Cent Credit Union

    EIN 420923713 · Headquarters: MASON CITY, IA, USA · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990

  31. Central Heights Neighborhood Association

    EIN 113758326 · Headquarters: Mason City, IA, US · Community Improvement & Capacity Building · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  32. Central Services 2-5-12 Inc

    EIN 272510520 · Headquarters: Mason City, IA, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990

  33. Cerro Gordo County Free Health Care Clinic Inc

    EIN 262612549 · Headquarters: Mason City, IA, US · Human Services · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  34. Cerro Gordo County Medical Society

    EIN 420821216 · Headquarters: Mason City, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  35. Cerro Gordo Daffodils

    EIN 472941982 · Headquarters: MASON CITY, IA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  36. Cerro Gordo Trails Inc

    EIN 421517772 · Headquarters: mason city, IA, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  37. Cerro Gordo Trap Neuter Return and Wildlife Rescue

    EIN 301461961 · Headquarters: Mason City, IA, US · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  38. Cft Foundation

    EIN 421519192 · Headquarters: MASON CITY, IA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  39. Charles B & Vivian Kelly Charitable Trust

    EIN 426619852 · Headquarters: MASON CITY, IA, USA · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  40. Charlie Brown Community Day Care Center Inc

    EIN 420938576 · Headquarters: MASON CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  41. Choral Music Guild Inc

    EIN 421410588 · Headquarters: Mason City, IA, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  42. Christmas Cheer Fund Inc

    EIN 421131702 · Headquarters: MASON CITY, IA, USA · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  43. Clausen-worden Post 101 Dept of Iowa American Legion Auxiliary

    EIN 426064330 · Headquarters: Mason City, IA, US · Public & Societal Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  44. Clear Lake Virtual Lions Club

    EIN 882594269 · Headquarters: Mason City, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  45. Columbia Club Inc

    EIN 420811127 · Headquarters: Mason City, IA, USA · Unknown & Unclassified · Latest available filing year: 2011 · Primary form: IRS Form 990

  46. Community Education Foundation

    EIN 472457826 · Headquarters: MASON CITY, IA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  47. Community Kitchen of North Ia Inc

    EIN 421285253 · Headquarters: MASON CITY, IA, USA · Food, Agriculture & Nutrition · Latest available filing year: 2024 · Primary form: IRS Form 990

  48. Community Policing Advisory Board

    EIN 208389093 · Headquarters: MASON CITY, IA, US · Education · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  49. Crime Stoppers of North Central Iowa

    EIN 421217959 · Headquarters: MASON CITY, IA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  50. Daughters of Union Veterans of the Civil War 1861-1865

    EIN 237021426 · Headquarters: Mason City, IA, US · Public & Societal Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  51. Daughters of Union Veterans of the Civil War 1861-1865

    EIN 237021445 · Headquarters: Mason City, IA, US · Public & Societal Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  52. Delta Kappa Gamma Society

    EIN 426096249 · Headquarters: Mason City, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  53. Demolay International

    EIN 421399778 · Headquarters: MASON CITY, IA, US · Youth Development · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  54. Department of Iowa Auxiliary to the Veterans of Foreign Wars

    EIN 711045596 · Headquarters: Mason City, IA, US · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  55. Disabled American Veterans

    EIN 426124923 · Headquarters: Mason City, IA, US · Public & Societal Benefit · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  56. Donald J Beck Trust

    EIN 266717210 · Headquarters: MASON CITY, IA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990

  57. Doris & Ralph Preuss Charitable Trust

    EIN 856218767 · Headquarters: MASON CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  58. Down Syndrome Association of North Central Iowa

    EIN 383916660 · Headquarters: Mason City, IA, US · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  59. E R Keig & Alice Keig Scholarship Fund

    EIN 596952608 · Headquarters: MASON CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  60. Elderbridge Agency on Aging

    EIN 421155559 · Headquarters: Mason City, IA, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  61. Farrer Endowment Foundation

    EIN 421214699 · Headquarters: MASON CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  62. Field Memorial Scholarship Trust

    EIN 426370219 · Headquarters: MASON CITY, IA, USA · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  63. First Citizens Bank Charitable Foundation

    EIN 421451615 · Headquarters: MASON CITY, IA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  64. Francis Lauer Youth Services Inc

    EIN 421378778 · Headquarters: MASON CITY, IA, USA · Human Services · Latest available filing year: 2014 · Primary form: IRS Form 990

  65. Freedom Inn His Grace Ministry

    EIN 813699521 · Headquarters: MASON CITY, IA, USA · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  66. Friends of Seoul Foreign School Inc

    EIN 420982442 · Headquarters: MASON CITY, IA, USA · International, Foreign Affairs & National Security · Latest available filing year: 2024 · Primary form: IRS Form 990

  67. Friends of the Library Mason City

    EIN 273118145 · Headquarters: Mason City, IA, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  68. Future Farmers of America Ia14081 Tall Corn Ffa Alumni Association

    EIN 472546389 · Headquarters: MASON CITY, IA, USA · Youth Development · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  69. Future Problem Solving Program International Inc

    EIN 204878265 · Headquarters: MASON CITY, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  70. Gardeners of North Iowa

    EIN 421263866 · Headquarters: Mason City, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. Gas & Electric Employees Credit Union

    EIN 420269010 · Headquarters: Mason City, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  72. Givers USA

    EIN 921815029 · Headquarters: Mason City, IA, US · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  73. Glady Mae Animal Sanctuary

    EIN 472465985 · Headquarters: Mason City, IA, US · Animal Related · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  74. Good Shepherd Health Center

    EIN 420725236 · Headquarters: MASON CITY, IA, USA · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2023 · Primary form: IRS Form 990

  75. Good Shepherd Retirement Apartments Incorporated

    EIN 510205713 · Headquarters: MASON CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990

  76. Good Shepherd Telephone Reassurance Inc

    EIN 421440083 · Headquarters: MASON CITY, IA, USA · Mental Health & Crisis Intervention · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  77. Good Works Foundation

    EIN 460623722 · Headquarters: MASON CITY, IA, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  78. Habitat for Humanity of North Central Iowa

    EIN 421408763 · Headquarters: MASON CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  79. Harding Elementary Parent Teacher Organization

    EIN 421452568 · Headquarters: MASON CITY, IA, USA · Education · Latest available filing year: 2022 · Primary form: IRS Form 990

  80. Hawkeye Harvest Food Bank

    EIN 421184748 · Headquarters: MASON CITY, IA, USA · Food, Agriculture & Nutrition · Latest available filing year: 2024 · Primary form: IRS Form 990

  81. Haydens Hope

    EIN 611733984 · Headquarters: Mason City, IA, US · Health Care · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  82. Herbert Hoover Parent Teacher Organizaion

    EIN 421146985 · Headquarters: Mason City, IA, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  83. Horsemen of Iowa Inc

    EIN 421229681 · Headquarters: MASON CITY, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  84. Hospice of North Iowa

    EIN 421173708 · Headquarters: MASON CITY, IA, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  85. Human Resources Association of North Iowa

    EIN 421314683 · Headquarters: Mason City, IA, US · Community Improvement & Capacity Building · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  86. Humane Society of North Iowa

    EIN 426079047 · Headquarters: Mason City, IA, USA · Animal Related · Latest available filing year: 2024 · Primary form: IRS Form 990

  87. Independent Order of Odd Fellows

    EIN 420327940 · Headquarters: Mason City, IA, US · Mutual & Membership Benefit · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  88. International Association of Fire Fighters

    EIN 426095935 · Headquarters: Mason City, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  89. International Association of Lions Clubs

    EIN 237183170 · Headquarters: Mason City, IA, US · Community Improvement & Capacity Building · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  90. International Association of Lions Clubs

    EIN 420705815 · Headquarters: Mason City, IA, US · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  91. International Brotherhood of Boilermaker

    EIN 426066360 · Headquarters: Mason City, IA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  92. Iowa Association of Women Police

    EIN 421184294 · Headquarters: Mason City, IA, US · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  93. Iowa Farm Bureau Federation

    EIN 420685004 · Headquarters: Mason City, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  94. Iowa Heartland Credit Union

    EIN 426056983 · Headquarters: MASON CITY, IA, USA · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990

  95. Iowa Independent Film Festival

    EIN 461860737 · Headquarters: Mason City, IA, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  96. Iowa Odd Fellows and Orphans Home Corp

    EIN 420818810 · Headquarters: MASON CITY, IA, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  97. Iowa Operation Lifesaver Inc

    EIN 300093240 · Headquarters: Mason City, IA, USA · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  98. Iowa State Policemens Association Mason City Unit No 18

    EIN 426081184 · Headquarters: MASON CITY, IA, US · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  99. Iowa Underwater Search & Rescue Inc

    EIN 421510522 · Headquarters: Mason City, IA, US · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  100. Jefferson Parent-teacher Organization

    EIN 421271690 · Headquarters: MASON CITY, IA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

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