Nonprofits in Iowa

Nonprofits in Iowa. Browse 36,116 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. Old Settlers Assn Inc

    EIN 421476140 · Headquarters: Fort Madison, IA, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  2. Old Settlers Steering Committee

    EIN 262805657 · Headquarters: Maxwell, IA, US · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  3. Old Stone Cemetery

    EIN 010934793 · Headquarters: Burlington, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  4. Old Threshers Foundation Inc

    EIN 421272944 · Headquarters: MT PLEASANT, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  5. Old Tipton Union School Inc

    EIN 260472589 · Headquarters: TIPTON, IA, USA · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  6. Olde Town Altoona Ba Inc

    EIN 391884405 · Headquarters: Altoona, IA, US · Community Improvement & Capacity Building · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  7. Older Iowans Legislature

    EIN 412145820 · Headquarters: DES MOINES, IA, US · Civil Rights, Social Action & Advocacy · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. Olds Fire Dept Foundation

    EIN 832749831 · Headquarters: OLDS, IA, US · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  9. Olin Community & School Foundation

    EIN 204093927 · Headquarters: OLIN, IA, USA · Education · Latest available filing year: 2014 · Primary form: IRS Form 990-EZ

  10. Olin Corporation Veba Tr - Cmb

    EIN 431201633 · Headquarters: DES MOINES, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  11. Olin Day Care Inc

    EIN 421450391 · Headquarters: OLIN, IA, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  12. Olin Education Association

    EIN 237100128 · Headquarters: Des Moines, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  13. Olin Hose Company

    EIN 421086880 · Headquarters: Olin, IA, US · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  14. Olive Grove Academy

    EIN 922256212 · Headquarters: Waterloo, IA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  15. Olive Tree Family Resources Inc

    EIN 843514253 · Headquarters: Oskaloosa, IA, US · Human Services · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  16. Ollie Community Retirement Corp

    EIN 421111103 · Headquarters: NORTH ENGLISH, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  17. Olliewood

    EIN 922127304 · Headquarters: Dubuque, IA, USA · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  18. Olmsted Parent-teacher Organization

    EIN 421458403 · Headquarters: URBANDALE, IA, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  19. Omaha African Violet and Gesneraid Society

    EIN 261472070 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  20. Omaha Haven Home and Virtue Based Educational Network

    EIN 831110045 · Headquarters: GLENWOOD, IA, US · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  21. Omaha Regional Missionary Alliance Inc

    EIN 811761938 · Headquarters: Council Bluffs, IA, US · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  22. Omaha Weavers and Spinners Guild

    EIN 812560002 · Headquarters: Malvern, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  23. Omega Chi Epsilon Chemical Engineering Honor Society

    EIN 742037827 · Headquarters: Ames, IA, US · Education · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  24. Omega Delta Corporation

    EIN 426076461 · Headquarters: WAUKEE, IA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  25. Omega Fires Global Impact Inc

    EIN 470958671 · Headquarters: Fort Dodge, IA, US · Education · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  26. Omega of Gamma Phi Beta Inc

    EIN 420267570 · Headquarters: CORALVILLE, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  27. Omega Psi Phi Fraternity

    EIN 426100376 · Headquarters: Des Moines, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. Omega Psi Phi Fraternity

    EIN 462395352 · Headquarters: Waterloo, IA, US · Education · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  29. Omega Psi Phi Fraternity Chi Eta

    EIN 510208856 · Headquarters: waterloo, IA, US · Education · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  30. Omega Psi Phi Fraternity Mu Delta Chapter

    EIN 237320556 · Headquarters: Cedar Rapids, IA, US · Education · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  31. Omega Psi Phi Fraternity Mu Theta

    EIN 237096965 · Headquarters: Ames, IA, US · Education · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  32. Omicron Delta Epsilon Intl Honor Society in Economics Inc

    EIN 237348194 · Headquarters: Decorach, IA, US · Education · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  33. Omicron Kappa Upsilon-honorary Dental Society

    EIN 237140266 · Headquarters: Iowa City, IA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  34. Omni Analytics Innovative Technologies Initiative

    EIN 823596410 · Headquarters: Ames, IA, US · Science & Technology · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  35. Omnicare

    EIN 994556748 · Headquarters: Leclaire, IA, US · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  36. On His Path

    EIN 271354039 · Headquarters: DANVILLE, IA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  37. On Target Ministry Inc

    EIN 208570096 · Headquarters: West Des Moines, IA, USA · Religion Related · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  38. On the Run Pet Rescue

    EIN 883822343 · Headquarters: Davenport, IA, US · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  39. On With Life

    EIN 421399777 · Headquarters: Ankeny, IA, US · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  40. On with Life Extended Services Ltd

    EIN 421521198 · Headquarters: ANKENY, IA, USA · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990

  41. On with Life Inc

    EIN 421308032 · Headquarters: ANKENY, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  42. On with Life Supportive Housing Cor

    EIN 460516882 · Headquarters: ANKENY, IA, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  43. On-line Audiovisual Catologers Inc

    EIN 411414832 · Headquarters: Iowa City, IA, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  44. Onawa Chamber of Commerce

    EIN 420674848 · Headquarters: ONAWA, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  45. Onawa Community Foundation

    EIN 421406597 · Headquarters: ONAWA, IA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990

  46. Onawa Country Club Corp

    EIN 420667813 · Headquarters: ONAWA, IA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  47. Onawa Kiwanis Foundation

    EIN 421202583 · Headquarters: ONAWA, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  48. Onawa Library Advocates Foundation

    EIN 205715519 · Headquarters: ONAWA, IA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  49. Oncology Nursing Society

    EIN 421272854 · Headquarters: North Liberty, IA, US · Unknown & Unclassified · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  50. One at a Time Inc

    EIN 993023338 · Headquarters: Ottumwa, IA, US · Housing & Shelter · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  51. One Body One Hope

    EIN 320294838 · Headquarters: SIOUX CENTER, IA, USA · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990

  52. One Cedar Valley

    EIN 873967186 · Headquarters: WATERLOO, IA, USA · Public & Societal Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990

  53. One City United

    EIN 832071578 · Headquarters: WATERLOO, IA, USA · Public & Societal Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990

  54. One Combat Academy Inc

    EIN 872112363 · Headquarters: Sioux City, IA, US · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  55. One Dog Rescue

    EIN 301365288 · Headquarters: Riverside, IA, US · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  56. One Economy Financial Development Corp

    EIN 833749919 · Headquarters: DES MOINES, IA, USA · Community Improvement & Capacity Building · Latest available filing year: 2023 · Primary form: IRS Form 990

  57. One Event at a Time

    EIN 934209423 · Headquarters: West Des Moines, IA, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  58. One for All Musical Theater

    EIN 823555757 · Headquarters: CARTER LAKE, IA, USA · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  59. One Foundation Incorporated

    EIN 860610662 · Headquarters: Cedar Rapids, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  60. One Health Certification Foundation

    EIN 843802878 · Headquarters: Ames, IA, USA · Food, Agriculture & Nutrition · Latest available filing year: 2025 · Primary form: IRS Form 990

  61. One Heart Catholic Missions

    EIN 472422628 · Headquarters: Madrid, IA, US · International, Foreign Affairs & National Security · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  62. One Heart Equestrian Therapy Inc

    EIN 421525335 · Headquarters: COLO, IA, USA · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990

  63. One Human Family Qca

    EIN 822671660 · Headquarters: Davenport, IA, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  64. One Iowa

    EIN 721613927 · Headquarters: DES MOINES, IA, USA · Civil Rights, Social Action & Advocacy · Latest available filing year: 2024 · Primary form: IRS Form 990

  65. One Iowa

    EIN 830440260 · Headquarters: Des Moines, IA, US · Civil Rights, Social Action & Advocacy · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  66. One Life One Heart International

    EIN 472516424 · Headquarters: Ames, IA, US · Crime & Legal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  67. One Little Light Inc

    EIN 510661624 · Headquarters: Atlantic, IA, US · Public & Societal Benefit · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  68. One Love Legacy

    EIN 333746178 · Headquarters: Keota, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  69. One More Mile Charities

    EIN 821712166 · Headquarters: Ankeny, IA, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  70. One Step at a Time Inc

    EIN 203096148 · Headquarters: LECLAIRE, IA, USA · Human Services · Latest available filing year: 2012 · Primary form: IRS Form 990-EZ

  71. One Vision

    EIN 420953968 · Headquarters: Clear Lake, IA, USA · Housing & Shelter · Latest available filing year: 2023 · Primary form: IRS Form 990

  72. One Vision Charitable Foundation

    EIN 814838453 · Headquarters: Clear Lake, IA, USA · Human Services · Latest available filing year: 2023 · Primary form: IRS Form 990

  73. One Voice Dsm

    EIN 843217099 · Headquarters: Des Moines, IA, US · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  74. One Way Recovery

    EIN 461301908 · Headquarters: Des Moines, IA, US · Housing & Shelter · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  75. One Whole Heart Ministry Inc

    EIN 474627485 · Headquarters: COUNCIL BLUFFS, IA, USA · Religion Related · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  76. One Within Inc

    EIN 134359190 · Headquarters: DECORAH, IA, US · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  77. One World Arts

    EIN 412488610 · Headquarters: Des Moines, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  78. Oneida Cemetery Association

    EIN 426063958 · Headquarters: Clutier, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  79. Oneota Film Festival

    EIN 271317882 · Headquarters: DECORAH, IA, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  80. Oneota Golf & Country Club

    EIN 420450005 · Headquarters: DECORAH, IA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  81. Oneota Historic Future Alliance

    EIN 810654388 · Headquarters: DECORAH, IA, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  82. Oneota Riverview Care Facility

    EIN 421316873 · Headquarters: DECORAH, IA, USA · Mental Health & Crisis Intervention · Latest available filing year: 2024 · Primary form: IRS Form 990

  83. Oneota Valley Community Orchestra

    EIN 475510849 · Headquarters: Decorah, IA, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  84. Onslow Area Housing Corporation

    EIN 237416398 · Headquarters: Mechanicsville, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  85. Opas Tractor Barn Museum Inc

    EIN 611550908 · Headquarters: West Amana, IA, US · Arts, Culture & Humanities · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  86. Open Air Education

    EIN 844804638 · Headquarters: Pella, IA, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  87. Open Arms Christian Ministry Church

    EIN 271848473 · Headquarters: Garner, IA, US · Religion Related · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  88. Open Cities Film Society

    EIN 421150442 · Headquarters: Davenport, IA, US · Arts, Culture & Humanities · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  89. Open Hands Food Pantry

    EIN 921093735 · Headquarters: WEST UNION, IA, US · Food, Agriculture & Nutrition · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  90. Open Hearts Open Fields Rescue

    EIN 992214984 · Headquarters: West Des Moines, IA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  91. Opened Doors Inc

    EIN 832527534 · Headquarters: Orange City, IA, US · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  92. Opening Doors

    EIN 421490364 · Headquarters: DUBUQUE, IA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  93. Opera House Inc

    EIN 237043885 · Headquarters: What Cheer, IA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  94. Opera House Players

    EIN 421511984 · Headquarters: Elkader, IA, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  95. Opera House Preservation Committee

    EIN 421486650 · Headquarters: Blairsburg, IA, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  96. Opera Ignite Inc

    EIN 202257757 · Headquarters: Cedar Rapids, IA, US · Arts, Culture & Humanities · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  97. Opera Project Dsm

    EIN 810789763 · Headquarters: West Des Moines, IA, US · Arts, Culture & Humanities · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  98. Operating Engineers Local #234 Health and Welfare Trust Fund

    EIN 510141783 · Headquarters: DES MOINES, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  99. Operation 11Th Hour

    EIN 874490396 · Headquarters: Independence, IA, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  100. Operation 22 Til Freedom

    EIN 843906606 · Headquarters: Council Blfs, IA, US · Mental Health & Crisis Intervention · Latest available filing year: 2025 · Primary form: IRS Form 990-N

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