Unknown & Unclassified nonprofits in Iowa

Unknown & Unclassified nonprofits in Iowa. Browse 15,415 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. Shriners International

    EIN 237421411 · Headquarters: ALTOONA, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  2. Shriners International

    EIN 260082350 · Headquarters: ALTOONA, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  3. Shriners International

    EIN 320276614 · Headquarters: ALTOONA, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  4. Shriners International

    EIN 352335391 · Headquarters: ALTOONA, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  5. Shriners International

    EIN 421145502 · Headquarters: ALTOONA, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  6. Shriners International

    EIN 421162529 · Headquarters: ALTOONA, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  7. Shriners International

    EIN 421298357 · Headquarters: ALTOONA, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. Shriners International

    EIN 421373433 · Headquarters: ALTOONA, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  9. Shriners International

    EIN 421377953 · Headquarters: ALTOONA, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  10. Shriners International

    EIN 421405325 · Headquarters: ALTOONA, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  11. Shriners International

    EIN 421510492 · Headquarters: ALTOONA, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  12. Shriners International

    EIN 581911964 · Headquarters: ALTOONA, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. Shriners International

    EIN 611717427 · Headquarters: Harlan, IA, US · Unknown & Unclassified · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  14. Shriners International

    EIN 812759170 · Headquarters: ALTOONA, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  15. Shriners International

    EIN 850909499 · Headquarters: ALTOONA, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  16. Shriners International

    EIN 912011063 · Headquarters: ALTOONA, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  17. Shriners International

    EIN 912013272 · Headquarters: ALTOONA, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  18. Sibley Chamber of Commerce

    EIN 420666829 · Headquarters: Sibley, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  19. Sibley Housing and Development Corporation

    EIN 421427755 · Headquarters: Sibley, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  20. Sibley-Ocheyedan Band Boosters

    EIN 421202933 · Headquarters: Sibley, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  21. Sibley-ocheyedan Education Association

    EIN 421319781 · Headquarters: Des Moines, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  22. Sickness & Accident Insurance Fund Automotive Division of Local 254

    EIN 237376249 · Headquarters: DES MOINES, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  23. Sidney a Swensrud Scholarship Fund

    EIN 426061933 · Headquarters: NORTHWOOD, IA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  24. Sidney Comm Education Association

    EIN 421314079 · Headquarters: Sidney, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  25. Sidney Junior Chamber of Commerce

    EIN 421217668 · Headquarters: sidney, IA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  26. Sidney Volunteer Fire & Rescue

    EIN 421325728 · Headquarters: SIDNEY, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  27. Sigma Alpha Epsilon Fraternity

    EIN 300619780 · Headquarters: Clive, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. Sigma Alpha Epsilon Fraternity

    EIN 420524675 · Headquarters: Granger, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  29. Sigma Alpha Epsilon Fraternity

    EIN 420887635 · Headquarters: Des Moines, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  30. Sigma Alpha Epsilon Fraternity

    EIN 421422967 · Headquarters: Clive, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  31. Sigma Alpha Epsilon Fraternity

    EIN 426059650 · Headquarters: CEDAR FALLS, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  32. Sigma Chi Fraternity

    EIN 420524690 · Headquarters: IOWA CITY, IA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  33. Sigma Chi Fraternity Beta Omicron Chapter

    EIN 420524685 · Headquarters: AMES, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  34. Sigma Delta Epsilon Graduate Womens Scientific Frat

    EIN 471660658 · Headquarters: Iowa City, IA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  35. Sigma Elpha Epsilon Fraternity

    EIN 421459370 · Headquarters: Iowa City, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  36. Sigma Gamma Epsilon

    EIN 720478319 · Headquarters: CEDAR FALLS, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  37. Sigma Gamma Epsilon Gamma Sigma Chp

    EIN 510153242 · Headquarters: Cedar Falls, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  38. Sigma Gamma Rho Sorority Inc

    EIN 311321653 · Headquarters: JOHNSTON, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  39. Sigma Gamma Rho Sorority Inc -Theta Psi

    EIN 811065740 · Headquarters: Ames, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  40. Sigma Gamma Rho Sorority Inc-theta Eta

    EIN 832883492 · Headquarters: Des Moines, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  41. Sigma Kappa Sorority Building Inc

    EIN 510247081 · Headquarters: ANKENY, IA, USA · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990

  42. Sigma Lambda Beta International Fraternity

    EIN 311538511 · Headquarters: North Liberty, IA, USA · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990

  43. Sigma Lambda Gamma National Sorority Inc

    EIN 311494387 · Headquarters: CEDAR RAPIDS, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  44. Sigma Nu House Company Inc

    EIN 420524715 · Headquarters: Boone, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  45. Sigma Phi Chi Sorority

    EIN 421206554 · Headquarters: Davenport, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  46. Sigma Phi Epsilon Fraternity IA Gamma Chapter

    EIN 420524734 · Headquarters: Coralville, IA, USA · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-EZ

  47. Sigma Phi Epsilon Fraternity Inc

    EIN 461102235 · Headquarters: Dubuque, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  48. Sigma Phi Epsilon Fraternity Inc

    EIN 943178200 · Headquarters: Cedar Falls, IA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  49. Sigma Phi Epsilon Fraternity Iowa Delta Chapter

    EIN 426100378 · Headquarters: DES MOINES, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  50. Sigma Theta Tau Icn

    EIN 421234649 · Headquarters: Newton, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  51. Sigma Theta Tau Inc

    EIN 311242972 · Headquarters: Cedar Rapids, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  52. Sigma Theta Tau Inc

    EIN 426076448 · Headquarters: Washington, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  53. Sigma Theta Tau International Inc

    EIN 421284814 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  54. Sigma Theta Tau International Inc

    EIN 900012730 · Headquarters: Dubuque, IA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  55. Sigma Theta Tau International Inc

    EIN 912039490 · Headquarters: Waterloo, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  56. Sigourney Area Development Corp

    EIN 421084764 · Headquarters: SIGOURNEY, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  57. Sigourney Education Association

    EIN 274386392 · Headquarters: Sigourney, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  58. Sigourney Educational Support Employees Association

    EIN 421314427 · Headquarters: Des Moines, IA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  59. Sigourney Music Boosters Association

    EIN 421086275 · Headquarters: Sigourney, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  60. Silent Knights Inc

    EIN 611615729 · Headquarters: Ankeny, IA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  61. Silver Creek Cemetery Association

    EIN 422351276 · Headquarters: Masonville, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  62. Silver Fox

    EIN 473089175 · Headquarters: Dunlap, IA, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  63. Silver Springs Golf & Country Club

    EIN 421405241 · Headquarters: OSSIAN, IA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  64. Singles Again Inc

    EIN 510151102 · Headquarters: Des Moines, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  65. Sioux Center Chamber of Commerce

    EIN 426065836 · Headquarters: SIOUX CENTER, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  66. Sioux Center Health

    EIN 420796764 · Headquarters: Sioux Center, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  67. 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

  68. Sioux City Country Club

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

  69. Sioux City Education Association

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

  70. Sioux City Educational Support Personnel Association

    EIN 421373836 · Headquarters: Des Moines, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  71. Sioux City Futures

    EIN 900850270 · Headquarters: Moville, IA, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  72. Sioux City Jewish Cemetery Association

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

  73. Sioux City Police Officers Association

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

  74. Sioux City Public Library Foundation

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

  75. 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

  76. Sioux County Historical Society

    EIN 237090007 · Headquarters: ORANGE CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  77. Sioux County Oratorio Chorus Inc

    EIN 421309262 · Headquarters: Orange City, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  78. Sioux Golf & Country Club

    EIN 420671782 · Headquarters: ALTON, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  79. Sioux Rapids Teachers Association

    EIN 237099813 · Headquarters: Sioux Rapids, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  80. Sioux Valley Chapter of the American Orff- Schulwerk

    EIN 421281480 · Headquarters: Spencer, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  81. Siouxland Chamber Foundation

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

  82. Siouxland Chamber of Commerce

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

  83. 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

  84. Siouxland Community Soup Kitchen

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

  85. Siouxland Construction Alliance

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

  86. Siouxland Critical Incident Stress Management Team

    EIN 320826158 · Headquarters: Cherokee, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  87. Siouxland Economic Development Corporation

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

  88. Siouxland Habitat for Humanity

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

  89. Siouxland Historical Railroad Assoc

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

  90. Siouxland Hog Chapter Inc

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

  91. Siouxland Huskers

    EIN 452671978 · Headquarters: Lawton, IA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  92. Siouxland Paramedics Inc

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

  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 Sharks Swimming Club Inc

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

  95. Siouxland Shooters

    EIN 800857017 · Headquarters: Moville, IA, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  96. Siouxland Sports and Cultural Events Congress

    EIN 421387591 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  97. Siouxland Youth Chorus Inc

    EIN 421362896 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  98. Sirk Family Foundation

    EIN 366080222 · Headquarters: DUBUQUE, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  99. Sister Joyce Blum Book

    EIN 383934784 · Headquarters: PANAMA, IA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  100. Sisters in Crime - Iowa

    EIN 272787212 · Headquarters: Des Moines, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

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