Nonprofits in Sioux City, Iowa

Nonprofits in Sioux City, Iowa. Browse 615 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. Home Builders Association

    EIN 420921156 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  2. Homehelp for Heroes

    EIN 934608965 · Headquarters: Sioux City, IA, US · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  3. Hope Ministry Enterprises

    EIN 844099911 · Headquarters: SIOUX CITY, IA, USA · Religion Related · Latest available filing year: 2024 · Primary form: IRS Form 990

  4. Hope Redemption Center

    EIN 844110138 · Headquarters: SIOUX CITY, IA, USA · Religion Related · Latest available filing year: 2024 · Primary form: IRS Form 990

  5. Hope Street of Siouxland

    EIN 832634668 · Headquarters: SIOUX CITY, IA, USA · Housing & Shelter · Latest available filing year: 2024 · Primary form: IRS Form 990

  6. Iglesia Restauracion Canaan Corporation

    EIN 473369219 · Headquarters: Sioux City, IA, USA · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  7. Independence Village Inc

    EIN 421250096 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  8. Indian Youth of America Inc

    EIN 521150452 · Headquarters: SIOUX CITY, IA, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  9. Indigenous Society Inc

    EIN 933870947 · Headquarters: Sioux City, IA, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  10. Int'l Association of Firefighters #7

    EIN 426066323 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  11. Int'l Brotherhood Electrical Workers

    EIN 420571251 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  12. Integrated Counseling Practice

    EIN 721615412 · Headquarters: SIOUX CITY, IA, US · Mental Health & Crisis Intervention · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  13. International Assn of Lions 4056 Sc

    EIN 420527510 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  14. International Association of Administrative Professionals

    EIN 237164607 · Headquarters: Sioux City, IA, US · Community Improvement & Capacity Building · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  15. International Association of Fire Fighters

    EIN 421337553 · Headquarters: Sioux City, IA, US · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  16. International Association of Lions Clubs

    EIN 421189401 · Headquarters: Sioux City, IA, US · Community Improvement & Capacity Building · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  17. International Association of Machinists & Aerospace Workers

    EIN 420793326 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  18. International Cesarean Awareness Network

    EIN 453728735 · Headquarters: Sioux City, IA, US · Health Care · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  19. International Union of Painters and Allied Trades

    EIN 420639532 · Headquarters: Sioux City, IA, US · Community Improvement & Capacity Building · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  20. Interstate Veterinary Medical Association

    EIN 364679110 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  21. Interstate Veterinary Medical Association Inc

    EIN 453987297 · Headquarters: Sioux City, IA, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  22. Iowa Aams Chapter Inc

    EIN 475195678 · Headquarters: Sioux City, IA, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  23. Iowa Association of School Music

    EIN 421214935 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  24. Iowa Congress of Parents and Teachers Inc

    EIN 811746785 · Headquarters: Sioux City, IA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  25. Iowa Lawyers Assistance Program

    EIN 421376345 · Headquarters: SIOUX CITY, IA, USA · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  26. Iowa Music Educators Association

    EIN 431151155 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  27. Iowa Skatepark Organization

    EIN 883992505 · Headquarters: Sioux City, IA, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. Iowa Statewide Poison Control Center

    EIN 421509042 · Headquarters: SIOUX CITY, IA, USA · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2024 · Primary form: IRS Form 990

  29. Iowas West Coast Initiative

    EIN 873212695 · Headquarters: Sioux City, IA, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  30. Irving & Elizabeth Jensen Foundation

    EIN 421249886 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  31. Jackson Recovery Centers Foundation

    EIN 262858101 · Headquarters: SIOUX CITY, IA, USA · Mental Health & Crisis Intervention · Latest available filing year: 2019 · Primary form: IRS Form 990

  32. Jackson Recovery Centers Inc

    EIN 391900255 · Headquarters: SIOUX CITY, IA, USA · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990

  33. James M Crow Foundation

    EIN 843317821 · Headquarters: SIOUX CITY, IA, US · Education · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  34. Jeff Nassiff Greater Siouxland Open

    EIN 202558471 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  35. Jewish Federation of Sioux City

    EIN 420698205 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  36. John Thompson Charitable Trust

    EIN 817079462 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  37. Jonathan David Phillips Performing Arts Foundation Inc

    EIN 263691105 · Headquarters: Sioux City, IA, US · Arts, Culture & Humanities · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  38. Jones Street Neighborhoods Midtown Family Community Center

    EIN 270567958 · Headquarters: Sioux City, IA, US · Recreation & Sports · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  39. Journal Goodfellow Charities Inc

    EIN 237240365 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  40. Junior League of Sioux City Inc

    EIN 420958266 · Headquarters: SIOUX CITY, IA, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990

  41. Kirk for Kids

    EIN 262739255 · Headquarters: Sioux City, IA, US · Youth Development · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  42. Kiwanis International Inc

    EIN 426091566 · Headquarters: Sioux City, IA, US · Community Improvement & Capacity Building · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  43. Knights Foundation

    EIN 853998540 · Headquarters: Sioux City, IA, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  44. Knights of Columbus

    EIN 420362250 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  45. Knights of Columbus

    EIN 421035522 · Headquarters: SIOUX CITY, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  46. Knights of Columbus

    EIN 421233291 · Headquarters: Sioux City, IA, US · Mutual & Membership Benefit · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  47. Knights of Columbus

    EIN 421401256 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  48. Knights of Columbus

    EIN 900170827 · Headquarters: Sioux CIty, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  49. Knights of Columbus

    EIN 911958798 · Headquarters: Sioux City, IA, US · Mutual & Membership Benefit · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  50. Knights of Columbus

    EIN 912144573 · Headquarters: Sioux city, IA, US · Mutual & Membership Benefit · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  51. Knights Templar of the United States of America

    EIN 420730688 · Headquarters: SIOUX CITY, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  52. Kol Tov Foundation

    EIN 474147782 · Headquarters: SIOUX CITY, IA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  53. La Maison Inc

    EIN 371441152 · Headquarters: Sioux City, IA, US · Mental Health & Crisis Intervention · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  54. La Roca Community Development Center Inc

    EIN 884274249 · Headquarters: SIOUX CITY, IA, US · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  55. Lamb Arts Ltd

    EIN 203694629 · Headquarters: SIOUX CITY, IA, USA · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990

  56. Le Mars Day Care Inc

    EIN 421511719 · Headquarters: Sioux City, IA, USA · Human Services · Latest available filing year: 2016 · Primary form: IRS Form 990-EZ

  57. Leadership Sioux City

    EIN 421296836 · Headquarters: SIOUX CITY, IA, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  58. League of Women Voters of Iowa

    EIN 510138322 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  59. Lee Legacy

    EIN 993312794 · Headquarters: SIOUX CITY, IA, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  60. Leeds Community Club Inc

    EIN 861115039 · Headquarters: Sioux City, IA, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  61. Leeds Elementary Booster Club

    EIN 880599284 · Headquarters: Sioux City, IA, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  62. Leo B Riley Scholarship Trust

    EIN 426620636 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  63. Leonhard Baak Trust

    EIN 426576745 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  64. Lila Mae's House

    EIN 811017056 · Headquarters: SIOUX CITY, IA, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  65. Little League Baseball Inc

    EIN 421348256 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  66. Little League Baseball Inc 6598 Hinton Ll

    EIN 421514116 · Headquarters: SIOUX CITY, IA, US · Recreation & Sports · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  67. Living Legends Youth Charity Foundation Living Legends Youth Charity Foundation

    EIN 465513443 · Headquarters: Sioux City, IA, US · Recreation & Sports · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  68. Loess Hills African Violet Society

    EIN 204363817 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  69. Loess Hills Audubon Society

    EIN 421485885 · Headquarters: Sioux City, IA, US · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  70. Long Lines Family Center Consortium

    EIN 810655433 · Headquarters: SIOUX CITY, IA, USA · Health Care · Latest available filing year: 2010 · Primary form: IRS Form 990

  71. Lucile Latta Charitable Trust

    EIN 426554228 · Headquarters: SIOUX CITY, IA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  72. Mage Inc-midwest Area Gaming

    EIN 421454867 · Headquarters: Sioux city, IA, US · Recreation & Sports · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  73. Mahoney-hill Charitable Fund Trust

    EIN 426071007 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  74. Makerspace Sioux City Inc

    EIN 475355019 · Headquarters: SIOUX CITY, IA, USA · Education · Latest available filing year: 2020 · Primary form: IRS Form 990

  75. Maple Heights Annex Inc

    EIN 421456926 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  76. Maple Heights Apartments Inc

    EIN 421184135 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  77. Margaret Ann Martin Everist Foundation

    EIN 421343418 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  78. Marian Home Healthcare

    EIN 383320705 · Headquarters: SIOUX CITY, IA, USA · Health Care · Latest available filing year: 2019 · Primary form: IRS Form 990-EZ

  79. Marie Foundation

    EIN 453680892 · Headquarters: SIOUX CITY, IA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  80. Marine Corps League

    EIN 421222612 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  81. Marine Corps League

    EIN 933365303 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  82. Marthas Mission Siouxland

    EIN 992493154 · Headquarters: Sioux City, IA, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  83. Mary Elizabeth Day Care Center

    EIN 420698200 · Headquarters: SIOUX CITY, IA, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  84. Mary J Treglia Community House

    EIN 420681107 · Headquarters: SIOUX CITY, IA, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  85. Marys Choice

    EIN 800627406 · Headquarters: Sioux City, IA, USA · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  86. Master Builders Association of Sioux City Iowa

    EIN 420756571 · Headquarters: Sioux City, IA, US · Community Improvement & Capacity Building · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  87. Mcelroy-briar Cliff Loan Fund

    EIN 421202189 · Headquarters: Sioux City, IA, USA · Education · Latest available filing year: 2010 · Primary form: IRS Form 990-EZ

  88. Mechanics for Vets

    EIN 832633463 · Headquarters: Sioux City, IA, US · Public & Societal Benefit · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  89. Meis Dental Education Legacy Inc

    EIN 863688524 · Headquarters: Sioux City, IA, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  90. Micah Project

    EIN 455570673 · Headquarters: Sioux City, IA, US · Human Services · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  91. Michael & Marjory Bennett Foundation

    EIN 273630915 · Headquarters: SIOUX CITY, IA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  92. Mid America Transportation and Aviation Museum

    EIN 421381617 · Headquarters: SIOUX CITY, IA, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  93. Mid-america Agri-industries Veba

    EIN 421423876 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  94. Mid-Nebraska Association for Developmental Housing

    EIN 363306578 · Headquarters: SIOUX CITY, IA, USA · Housing & Shelter · Latest available filing year: 2011 · Primary form: IRS Form 990-EZ

  95. Mid-step Services Inc Foundation

    EIN 421262708 · Headquarters: Sioux City, IA, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  96. Midstep Services

    EIN 421086647 · Headquarters: Sioux City, IA, United States · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  97. Midwest Volleyball Power

    EIN 273330200 · Headquarters: SIOUX CITY, IA, USA · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  98. Mission of the Messiah

    EIN 272545155 · Headquarters: SIOUX CITY, IA, USA · Housing & Shelter · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  99. Missouri River Boat Club

    EIN 421420861 · Headquarters: Sioux City, IA, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  100. Missouri River Choral Society

    EIN 843345325 · Headquarters: Sioux City, IA, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N

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