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. Sioux Center Education Association Sioux Center Community High School

    EIN 421089530 · Headquarters: Sioux City, IA, US · Education · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  2. Sioux City Chamber Music Association

    EIN 421077538 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  3. Sioux City Community Assistance

    EIN 844390572 · Headquarters: SIOUX CITY, IA, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  4. Sioux City Community Theater

    EIN 426089353 · Headquarters: SIOUX CITY, IA, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  5. Sioux City Concert Course

    EIN 426058634 · Headquarters: SIOUX CITY, IA, USA · Arts, Culture & Humanities · Latest available filing year: 2012 · Primary form: IRS Form 990

  6. Sioux City Country Club

    EIN 420527395 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  7. Sioux City Dental Society

    EIN 420802621 · Headquarters: SIOUX CITY, IA, USA · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2016 · Primary form: IRS Form 990-EZ

  8. Sioux City Education Association

    EIN 420940947 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  9. Sioux City Fastpitch Softball Association

    EIN 421240510 · Headquarters: Sioux City, IA, USA · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990

  10. Sioux City Fire & Rescue Historical Society

    EIN 300659907 · Headquarters: Sioux City, IA, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  11. Sioux City Future Stars

    EIN 834067698 · Headquarters: SIOUX CITY, IA, USA · Youth Development · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  12. Sioux City Garden Club

    EIN 421219280 · Headquarters: Sioux City, IA, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  13. Sioux City Growth Organization Inc

    EIN 810624742 · Headquarters: SIOUX CITY, IA, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  14. Sioux City Heritage Trolley Association

    EIN 830592153 · Headquarters: SIOUX CITY, IA, US · Public & Societal Benefit · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  15. Sioux City Housing Trust Fund Inc

    EIN 261274244 · Headquarters: SIOUX CITY, IA, USA · Housing & Shelter · Latest available filing year: 2024 · Primary form: IRS Form 990

  16. Sioux City Jayces

    EIN 421108193 · Headquarters: SIOUX CITY, IA, US · Public & Societal Benefit · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  17. Sioux City Jewish Cemetery Association

    EIN 421381716 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  18. Sioux City Judo and Jujitsu

    EIN 993466340 · Headquarters: Sioux City, IA, US · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  19. Sioux City Lewis & Clark Interpretive Center

    EIN 020572695 · Headquarters: SIOUX CITY, IA, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  20. Sioux City Mariners

    EIN 831941918 · Headquarters: Sioux City, IA, US · Recreation & Sports · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  21. Sioux City Minor League Baseball Foundation

    EIN 272967436 · Headquarters: Sioux City, IA, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  22. Sioux City Moons

    EIN 934232961 · Headquarters: Sioux City, IA, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  23. Sioux City Museum & Historical Association

    EIN 420863053 · Headquarters: SIOUX CITY, IA, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  24. Sioux City Neighborhood Network

    EIN 421410976 · Headquarters: SIOUX CITY, IA, US · Community Improvement & Capacity Building · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  25. Sioux City Newspaper Guild Local 37123

    EIN 421294384 · Headquarters: SIOUX CITY, IA, US · Employment · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  26. Sioux City Parks and Recreation Foundation Inc

    EIN 474237541 · Headquarters: Sioux City, IA, USA · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990

  27. Sioux City Police Officers Associat Ion Friends

    EIN 414728133 · Headquarters: Sioux City, IA, US · Youth Development · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. Sioux City Police Officers Association

    EIN 426057343 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  29. Sioux City Police Officers Burial Fund

    EIN 421144400 · Headquarters: SIOUX CITY, IA, USA · Crime & Legal Related · Latest available filing year: 2017 · Primary form: IRS Form 990-EZ

  30. Sioux City Public Library Foundation

    EIN 421261668 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  31. Sioux City Public School Foundation

    EIN 262524675 · Headquarters: Sioux City, IA, USA · Education · Latest available filing year: 2025 · Primary form: IRS Form 990

  32. Sioux City Regional Convention and Visitors Bureau

    EIN 844822910 · Headquarters: SIOUX CITY, IA, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990

  33. Sioux City Rotary Club Foundation Inc

    EIN 421508358 · Headquarters: Sioux City, IA, US · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  34. Sioux City Scottish Rite Building Preservation Corporation

    EIN 260326562 · Headquarters: Sioux City, IA, USA · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990

  35. Sioux City Symphony Orchestra

    EIN 426006580 · Headquarters: SIOUX CITY, IA, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  36. Sioux City Tabletop Gamers

    EIN 863265613 · Headquarters: Sioux CIty, IA, US · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  37. Sioux City Westside Connection

    EIN 473400856 · Headquarters: SIOUX CITY, IA, USA · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990

  38. Sioux City Westside Little Lea Westside Little League

    EIN 421413422 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  39. Sioux City Womans Club

    EIN 426064587 · Headquarters: Sioux City, IA, US · Community Improvement & Capacity Building · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  40. Sioux City Young Ambassadors Inc

    EIN 391881065 · Headquarters: Sioux City, IA, US · Crime & Legal Related · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  41. Sioux Landmark Corporation

    EIN 421428436 · Headquarters: Sioux City, IA, US · Arts, Culture & Humanities · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  42. Sioux Valley Community Credit Union

    EIN 420837840 · Headquarters: SIOUX CITY, IA, USA · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990

  43. Siouxland Aging Services Inc

    EIN 421335630 · Headquarters: SIOUX CITY, IA, USA · Human Services · Latest available filing year: 2012 · Primary form: IRS Form 990

  44. Siouxland All-america Band

    EIN 421445513 · Headquarters: sioux city, IA, US · Arts, Culture & Humanities · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  45. Siouxland Artists Inc

    EIN 743237925 · Headquarters: Sioux City, IA, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  46. Siouxland Cares About Substance Abuse

    EIN 421331282 · Headquarters: SIOUX CITY, IA, USA · Mental Health & Crisis Intervention · Latest available filing year: 2025 · Primary form: IRS Form 990

  47. Siouxland Catholic Radio 88.1 FM

    EIN 421516853 · Headquarters: Sioux City, Iowa, USA · Religion Related · Latest available filing year: 2024 · Primary form: IRS Form 990

  48. Siouxland Chamber Foundation

    EIN 421074273 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  49. Siouxland Chamber of Commerce

    EIN 421229237 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  50. Siouxland Chapter

    EIN 421273232 · Headquarters: Sioux City, IA, US · Health Care · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  51. Siouxland Chapter of the Society of Human Resources Manager

    EIN 421211841 · Headquarters: Sioux City, IA, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  52. Siouxland Chapter Piano Technicians Guild 511

    EIN 270428379 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  53. Siouxland Christian Booster Club Inc

    EIN 880524226 · Headquarters: SIOUX CITY, IA, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  54. Siouxland Christian School

    EIN 201275708 · Headquarters: SIOUX CITY, IA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  55. Siouxland Coalition Against Human Trafficking

    EIN 352532486 · Headquarters: Sioux City, IA, US · Civil Rights, Social Action & Advocacy · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  56. Siouxland Coalition to End Homelessness

    EIN 263310954 · Headquarters: SIOUX CITY, IA, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  57. Siouxland Community Foundation

    EIN 421323904 · Headquarters: SIOUX CITY, IA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990

  58. Siouxland Community Health Center

    EIN 421374894 · Headquarters: Sioux City, IA, US · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990

  59. Siouxland Community Health Foundation

    EIN 421411570 · Headquarters: SIOUX CITY, IA, USA · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990

  60. Siouxland Community Potluck Coaliti On

    EIN 412611739 · Headquarters: Sioux City, IA, US · Food, Agriculture & Nutrition · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  61. Siouxland Community Soup Kitchen

    EIN 421290504 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  62. Siouxland Construction Alliance

    EIN 420503240 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  63. Siouxland Cyclists Inc

    EIN 205152295 · Headquarters: Sioux City, IA, US · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  64. Siouxland Economic Development Corporation

    EIN 421150060 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  65. Siouxland Expo Center

    EIN 822809847 · Headquarters: SIOUX CITY, IA, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  66. Siouxland Foster Closet

    EIN 871432192 · Headquarters: Sioux City, IA, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  67. Siouxland Gem & Mineral Society

    EIN 421344050 · Headquarters: Sioux City, IA, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  68. Siouxland Golf Charities Inc

    EIN 200032423 · Headquarters: sioux city, IA, US · Recreation & Sports · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  69. Siouxland Habitat for Humanity

    EIN 421388519 · Headquarters: Sioux City, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  70. Siouxland Heritage Foundation

    EIN 421516734 · Headquarters: SIOUX CITY, IA, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  71. Siouxland Historical Railroad Assoc

    EIN 421230863 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  72. Siouxland Hog Chapter Inc

    EIN 900178102 · Headquarters: SIOUX CITY, IA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  73. Siouxland Human Investment Partnership

    EIN 421495836 · Headquarters: SIOUX CITY, IA, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  74. Siouxland Humane Society Inc

    EIN 426000336 · Headquarters: SIOUX CITY, IA, USA · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990

  75. Siouxland Informational Group for the Blind

    EIN 421469176 · Headquarters: Sioux City, IA, US · Human Services · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  76. Siouxland Institute of Film Inc

    EIN 453659637 · Headquarters: SIOUX CITY, IA, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  77. Siouxland Intergroup

    EIN 421524425 · Headquarters: SIOUX CITY, IA, US · Mental Health & Crisis Intervention · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  78. Siouxland Junior Darts Inc

    EIN 992140874 · Headquarters: Sioux City, IA, US · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  79. Siouxland Lutherns in Mission & Ministry

    EIN 822312358 · Headquarters: Sioux City, IA, US · Religion Related · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  80. Siouxland Marathon Inc

    EIN 200559433 · Headquarters: Sioux City, IA, US · Recreation & Sports · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  81. Siouxland Master Chorale

    EIN 421215956 · Headquarters: Sioux City, IA, US · Arts, Culture & Humanities · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  82. Siouxland Medical Education Foundation Inc

    EIN 421036971 · Headquarters: SIOUX CITY, IA, USA · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990

  83. Siouxland Mental Health Services Inc

    EIN 426122297 · Headquarters: SIOUX CITY, IA, USA · Mental Health & Crisis Intervention · Latest available filing year: 2024 · Primary form: IRS Form 990

  84. Siouxland Officials Association

    EIN 421531688 · Headquarters: Sioux City, IA, US · Arts, Culture & Humanities · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  85. Siouxland Pace Inc

    EIN 261120134 · Headquarters: SIOUX CITY, IA, USA · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990

  86. Siouxland Paramedics Inc

    EIN 421185707 · Headquarters: Sioux City, IA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  87. Siouxland Paw Prints Rescue

    EIN 421766287 · Headquarters: SIOUX CITY, IA, USA · Animal Related · Latest available filing year: 2013 · Primary form: IRS Form 990-EZ

  88. Siouxland Philanthropy

    EIN 843875229 · Headquarters: SIOUX CITY, IA, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  89. Siouxland Pickleball Association

    EIN 851322882 · Headquarters: Sioux City, IA, USA · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  90. Siouxland Rental Association Inc

    EIN 421252207 · Headquarters: Sioux City, IA, US · Arts, Culture & Humanities · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  91. Siouxland Right to Life

    EIN 421202844 · Headquarters: Sioux City, IA, US · Civil Rights, Social Action & Advocacy · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  92. Siouxland Robotics Club

    EIN 833819269 · Headquarters: Sioux City, IA, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  93. Siouxland Safety Company

    EIN 384050802 · Headquarters: SIOUX CITY, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  94. Siouxland Samplers Quilt Guild Inc

    EIN 421328547 · Headquarters: Sioux City, IA, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  95. Siouxland Senior Center

    EIN 420984100 · Headquarters: SIOUX CITY, IA, USA · Human Services · Latest available filing year: 2023 · Primary form: IRS Form 990

  96. Siouxland Sharks Swim Club Inc

    EIN 237043868 · Headquarters: Sioux City, IA, US · Education · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  97. Siouxland Sharks Swimming Club Inc

    EIN 812309178 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  98. Siouxland Singles

    EIN 300049635 · Headquarters: Sioux City, IA, US · Arts, Culture & Humanities · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  99. Siouxland Ski Club Inc

    EIN 421066380 · Headquarters: Sioux City, IA, US · Recreation & Sports · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  100. Siouxland Soccer Foundation

    EIN 421380666 · Headquarters: Sioux City, IA, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990

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