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. Operation Celebration Inc

    EIN 461136002 · Headquarters: Davenport, IA, US · Recreation & Sports · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  2. Operation Enpower

    EIN 204600693 · Headquarters: DUBUQUE, IA, USA · Housing & Shelter · Latest available filing year: 2024 · Primary form: IRS Form 990

  3. Operation Hope Medical Missions

    EIN 832478981 · Headquarters: Mount Pleasant, IA, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  4. Operation Kindness

    EIN 821208299 · Headquarters: SOLON, IA, US · Human Services · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  5. Operation Lz Inc

    EIN 472977433 · Headquarters: Forest City, IA, US · Human Services · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  6. Operation Middle Ground

    EIN 815002871 · Headquarters: JOHNSTON, IA, US · Community Improvement & Capacity Building · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  7. Operation New View Community Action Foundation

    EIN 202549142 · Headquarters: Dubuque, IA, US · Human Services · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  8. Operation Recreation

    EIN 821021755 · Headquarters: Osceola, IA, US · Health Care · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  9. Operation Threshold Inc

    EIN 420982549 · Headquarters: WATERLOO, IA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  10. Operative Plasterers & Cement Masons International Association Local 538

    EIN 470199095 · Headquarters: DES MOINES, IA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  11. Operative Plasterers & Cement Masons Local Union No 21

    EIN 420571084 · Headquarters: DES MOINES, IA, USA · Employment · Latest available filing year: 2021 · Primary form: IRS Form 990

  12. Opoku-sekyere Family Charity

    EIN 991585345 · Headquarters: Grimes, IA, US · Food, Agriculture & Nutrition · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. Opportunites Inc

    EIN 421140249 · Headquarters: Muscatine, IA, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  14. Opportunities Mentoring of Van Buren County

    EIN 262093118 · Headquarters: Keosauqua, IA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  15. Opportunities Never Ending Foundation

    EIN 412116399 · Headquarters: Bettendorf, IA, US · Human Services · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  16. Opportunities Unlimited

    EIN 421354428 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  17. Opportunity Homes Inc

    EIN 421144672 · Headquarters: DECORAH, IA, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  18. Opportunity Living

    EIN 421293894 · Headquarters: Lake City, IA, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  19. Opportunity Living Benefit Tr

    EIN 421448684 · Headquarters: Lake City, IA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  20. Opportunity Living Foundation

    EIN 421443317 · Headquarters: Lake City, IA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990

  21. Opportunity on Deck

    EIN 464974174 · Headquarters: Urbandale, IA, USA · Youth Development · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  22. Optasia Ministry Inc

    EIN 208063136 · Headquarters: Des Moines, IA, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  23. Opticians Association of Iowa Inc

    EIN 421100961 · Headquarters: Sioux City, IA, US · Health Care · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  24. Optimist Club Foundation of Davenport

    EIN 421408289 · Headquarters: Davenport, IA, US · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  25. Optimist Club of Atlantic Ia 40185

    EIN 900300560 · Headquarters: Atlantic, IA, US · Youth Development · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  26. Optimist Club of Underwood Foundation

    EIN 333196509 · Headquarters: Underwood, IA, US · Youth Development · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  27. Optimist Foundation of Cedar Rapids Iowa

    EIN 421384317 · Headquarters: Cedar Rapids, IA, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  28. Optimist International

    EIN 200990687 · Headquarters: Grinnell, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  29. Optimist International

    EIN 237024431 · Headquarters: Cedar Rapids, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  30. Optimist International

    EIN 237078576 · Headquarters: Glenwood, IA, US · Youth Development · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  31. Optimist International

    EIN 237152518 · Headquarters: Lisbon, IA, US · Youth Development · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  32. Optimist International

    EIN 237152531 · Headquarters: Washington, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  33. Optimist International

    EIN 237160821 · Headquarters: Dubuque, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  34. Optimist International

    EIN 237176313 · Headquarters: Marshalltown, IA, US · Youth Development · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  35. Optimist International

    EIN 237396323 · Headquarters: SHENANDOAH, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  36. Optimist International

    EIN 237396543 · Headquarters: Burlington, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  37. Optimist International

    EIN 300168311 · Headquarters: Washington, IA, US · Youth Development · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  38. Optimist International

    EIN 391875044 · Headquarters: West Point, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  39. Optimist International

    EIN 420954869 · Headquarters: Council Bluffs, IA, US · Youth Development · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  40. Optimist International

    EIN 421150940 · Headquarters: ANKENY, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  41. Optimist International

    EIN 421181259 · Headquarters: Elk Horn, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  42. Optimist International

    EIN 421198355 · Headquarters: Underwood, IA, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  43. Optimist International

    EIN 421228864 · Headquarters: Winterset, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  44. Optimist International

    EIN 421232903 · Headquarters: Treynor, IA, US · Youth Development · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  45. Optimist International

    EIN 421238325 · Headquarters: WALNUT, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  46. Optimist International

    EIN 421242091 · Headquarters: Griswold, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  47. Optimist International

    EIN 421248818 · Headquarters: LE MARS, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  48. Optimist International

    EIN 421307316 · Headquarters: Osceola, IA, US · Youth Development · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  49. Optimist International

    EIN 421322113 · Headquarters: CORYDON, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  50. Optimist International

    EIN 421337269 · Headquarters: WEST DES MOINES, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  51. Optimist International

    EIN 421382085 · Headquarters: Glenwood, IA, US · Youth Development · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  52. Optimist International

    EIN 421411246 · Headquarters: Bloomfield, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  53. Optimist International

    EIN 421411251 · Headquarters: OSKALOOSA, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  54. Optimist International

    EIN 421418022 · Headquarters: Knoxville, IA, US · Youth Development · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  55. Optimist International

    EIN 421421033 · Headquarters: Woodbine, IA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  56. Optimist International

    EIN 421443339 · Headquarters: Davenport, IA, US · Youth Development · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  57. Optimist International

    EIN 421475865 · Headquarters: Urbandale, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  58. Optimist International

    EIN 426061137 · Headquarters: WATERLOO, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  59. Optimist International

    EIN 426075502 · Headquarters: Red Oak, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  60. Optimist International

    EIN 426076609 · Headquarters: MARSHALLTOWN, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  61. Optimist International

    EIN 426077224 · Headquarters: WEST DES MOINES, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  62. Optimist International

    EIN 426077314 · Headquarters: Denison, IA, US · Youth Development · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  63. Optimist International

    EIN 426081195 · Headquarters: Iowa City, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  64. Optimist International

    EIN 426085309 · Headquarters: Maquoketa, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  65. Optimist International

    EIN 426091413 · Headquarters: Iowa City, IA, US · Youth Development · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  66. Optimist International

    EIN 426095480 · Headquarters: Solon, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  67. Optimist International

    EIN 426118739 · Headquarters: Cedar Rapids, IA, US · Youth Development · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  68. Optimist International

    EIN 426130959 · Headquarters: Kalona, IA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  69. Optimist International

    EIN 473354387 · Headquarters: LEON, IA, US · Youth Development · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  70. Optimist International

    EIN 510157522 · Headquarters: Carter Lake, IA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  71. Optimist International

    EIN 510200120 · Headquarters: KALONA, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  72. Optimist International

    EIN 510219198 · Headquarters: Greenfield, IA, US · Youth Development · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  73. Optimist International

    EIN 510219220 · Headquarters: Coralville, IA, US · Youth Development · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  74. Optimist International

    EIN 510219238 · Headquarters: TABOR, IA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  75. Optimist International

    EIN 812963736 · Headquarters: Bettendorf, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  76. Optimist International

    EIN 813275703 · Headquarters: SIOUX CITY, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  77. Optimist International

    EIN 822685390 · Headquarters: Boone, IA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  78. Optimist International

    EIN 842261133 · Headquarters: AMES, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  79. Optimist International

    EIN 844850328 · Headquarters: Council Bluffs, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  80. Optimist International

    EIN 900243366 · Headquarters: Pocahontas, IA, US · Youth Development · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  81. Optimist International

    EIN 900270304 · Headquarters: Belle Plaine, IA, US · Youth Development · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  82. Optimist International

    EIN 900273673 · Headquarters: Dysart, IA, US · Youth Development · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  83. Optimist International

    EIN 900281414 · Headquarters: Lamoni, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  84. Optimist International

    EIN 900329570 · Headquarters: Creston, IA, US · Youth Development · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  85. Optimist International

    EIN 900331503 · Headquarters: Clarinda, IA, US · Youth Development · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  86. Optimist International

    EIN 900418506 · Headquarters: Perry, IA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  87. Optimist International

    EIN 900424206 · Headquarters: Corydon, IA, US · Youth Development · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  88. Optimist International

    EIN 900473238 · Headquarters: Crescent, IA, US · Youth Development · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  89. Optimist International

    EIN 900486995 · Headquarters: Des Moines, IA, US · Youth Development · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  90. Optimist International

    EIN 900487026 · Headquarters: Washington, IA, US · Youth Development · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  91. Optimist International

    EIN 900595943 · Headquarters: Logan, IA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  92. Optimist International

    EIN 900733292 · Headquarters: Eldridge, IA, US · Youth Development · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  93. Optimist International

    EIN 900755914 · Headquarters: Oakland, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  94. Optimist International

    EIN 900819284 · Headquarters: Des Moines, IA, US · Youth Development · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  95. Optimist International

    EIN 900885495 · Headquarters: LeClaire, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  96. Optimist International

    EIN 901035763 · Headquarters: Forest City, IA, US · Youth Development · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  97. Optimist International

    EIN 912072276 · Headquarters: Washington, IA, US · Youth Development · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  98. Optimist International

    EIN 912103347 · Headquarters: Marshalltown, IA, US · Youth Development · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  99. Optimist International 40010 Macedonia-b

    EIN 421373463 · Headquarters: Carson, IA, US · Youth Development · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  100. OPTIMIST INTERNATIONAL 40038 QC of Davenport-Quad Cities-Morning

    EIN 421276656 · Headquarters: DAVENPORT, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

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