Unknown & Unclassified nonprofits in Missouri

Unknown & Unclassified nonprofits in Missouri. Browse 15,780 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. Ohio Cemetery Association

    EIN 440557320 · Headquarters: Burlington Jct, MO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  2. Ohio State University Alumni Association Inc

    EIN 134208716 · Headquarters: Webster Groves, MO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  3. Oklahoma Academy of Ophthalmology

    EIN 731329023 · Headquarters: JEFFERSON CITY, MO, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  4. Oklahoma Buckskin Horse Association

    EIN 731298486 · Headquarters: Saint Joseph, MO, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  5. Oklahomans for Consumer Freedom Inc

    EIN 474935737 · Headquarters: St Louis, MO, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  6. Olberg Lottie E Tuw

    EIN 956441658 · Headquarters: SAINT LOUIS, MO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  7. Old Auxvasse Cemetery Association

    EIN 431533660 · Headquarters: FULTON, MO, US · Unknown & Unclassified · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  8. Old Lamine Cemetery Corporation

    EIN 436055129 · Headquarters: BOONVILLE, MO, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  9. Old Mines Community & Education Trust

    EIN 431400389 · Headquarters: Potosi, MO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  10. Old Monroe Community American Legion Corp

    EIN 431056385 · Headquarters: OLD MONROE, MO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  11. Old Monroe Levee District Inc

    EIN 812645027 · Headquarters: Saint Charles, MO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  12. Old New Garden Cemetery Association Inc

    EIN 431125857 · Headquarters: Brookfield, MO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  13. Old North St Louis Restoration Group Inc

    EIN 431254052 · Headquarters: St Louis, MO, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  14. Old Pike Country Club

    EIN 440643220 · Headquarters: KANSAS CITY, MO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  15. Old Settlers Association of Montgomery County

    EIN 431051325 · Headquarters: Montgomery City, MO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  16. Old St Patrick Oratory Council 18421

    EIN 334540640 · Headquarters: Kansas City, MO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  17. Old Swedes Church Preserv Fd Ir Tua

    EIN 236592113 · Headquarters: SAINT LOUIS, MO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  18. Old Trails Historical Society

    EIN 430906999 · Headquarters: Ballwin, MO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  19. Old Warson Country Club

    EIN 430685533 · Headquarters: ST LOUIS, MO, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  20. Old Woollam St Johns Cemetery Association

    EIN 430837639 · Headquarters: OWENSVILLE, MO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  21. Olive Branch Cemetery Inc

    EIN 900641489 · Headquarters: Tipton, MO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  22. Olive G Mclorn Endowment Fund

    EIN 436269103 · Headquarters: LA PLATA, MO, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  23. Oliver & Cunningham Fam Fdn-main

    EIN 356013076 · Headquarters: SAINT LOUIS, MO, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  24. Olmstead Smith Clareta Char

    EIN 916244502 · Headquarters: SAINT LOUIS, MO, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  25. Omega of Zeta Beta Tau Building Assoc C/o Bert Schweizer Iii

    EIN 436061733 · Headquarters: SAINT LOUIS, MO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  26. Omege Omega

    EIN 473540323 · Headquarters: Cape Girardeau, MO, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  27. Omicron Delta Kappa

    EIN 208960476 · Headquarters: Fayette, MO, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  28. Omicron Kappa Upsilon-honorary Dental Society

    EIN 237137753 · Headquarters: Kansas City, MO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  29. On Fire for Christ Inc

    EIN 412280298 · Headquarters: Florissant, MO, US · Unknown & Unclassified · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  30. Oncology Nursing Society

    EIN 431621120 · Headquarters: Jackson, MO, US · Unknown & Unclassified · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  31. Oncology Nursing Society

    EIN 521277612 · Headquarters: kansas city, MO, US · Unknown & Unclassified · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  32. Onus

    EIN 300884645 · Headquarters: Florissant, MO, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  33. Onward

    EIN 332050278 · Headquarters: Saint Louis, MO, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  34. Onward for Christ Evangelistic Association Inc

    EIN 132852284 · Headquarters: Jackson, MO, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  35. Opeiu Local 13

    EIN 430644832 · Headquarters: BRIDGETON, MO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  36. Open Door Animal Sanctuary

    EIN 237444249 · Headquarters: HOUSE SPRINGS, MO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  37. Open Door Service Center Inc

    EIN 237196451 · Headquarters: SEDALIA, MO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  38. Operating Engineers Local 101 Health and Welfare Plan

    EIN 440663379 · Headquarters: KANSAS CITY, MO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  39. Operating Engineers Local 101 Vacation Plan

    EIN 431077518 · Headquarters: KANSAS CITY, MO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  40. Operating Engineers Local 148 Health and Welfare Trust

    EIN 436058032 · Headquarters: ST LOUIS, MO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  41. Operating Engineers Local No 101 Apprenticeship Fund

    EIN 237048499 · Headquarters: PLATTE CITY, MO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  42. Operating Engineers Local Union 148

    EIN 370447914 · Headquarters: ST LOUIS, MO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  43. Operation Game Thief Inc

    EIN 431262770 · Headquarters: Jefferson City, MO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  44. Operation Tiff Food Basket Inc

    EIN 431501002 · Headquarters: Tiff, MO, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  45. Operative Plasterers & Cement Mason Local 908

    EIN 436068865 · Headquarters: CAPE GIRARDEAU, MO, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  46. Operative Plasterers & Cement Mason Local Union 518

    EIN 440194955 · Headquarters: INDEPENDENCE, MO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  47. Operative Plasterers & Cement Masons International Association

    EIN 430460310 · Headquarters: SAINT LOUIS, MO, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  48. Operative Plasterers & Cement Masons Local 908 Apprenticeship Fu

    EIN 814440185 · Headquarters: Cape Girardeau, MO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  49. Operative Plasters and Cement Masons International Association Local 527

    EIN 430210270 · Headquarters: BRIDGETON, MO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  50. Opojaz Inc

    EIN 133285442 · Headquarters: Saint Louis, MO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  51. Oppenstein Brothers Foundation

    EIN 436203035 · Headquarters: KANSAS CITY, MO, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  52. Opportunity Enterprises Inc

    EIN 521040994 · Headquarters: CARROLLTON, MO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  53. Opportunity Sheltered Industries Inc

    EIN 431456356 · Headquarters: HOUSTON, MO, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  54. Opportunity Workshop Inc of Gentry Co

    EIN 430980574 · Headquarters: STANBERRY, MO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  55. Optimist Club Foundation of Mexico Missouri Inc

    EIN 431219901 · Headquarters: MEXICO, MO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  56. Optimist Club of Cape Girardeau- Noon

    EIN 431210995 · Headquarters: CAPE GIRARDEAU, MO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  57. Optimist Club of Fayette

    EIN 900355995 · Headquarters: Fayette, MO, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  58. Optimist Club of Inter City

    EIN 430905951 · Headquarters: Independence, MO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  59. Optimist Club of Jefferson City

    EIN 446013705 · Headquarters: JEFFERSON CITY, MO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  60. Optimist Club of Lawndale Tua

    EIN 953766429 · Headquarters: SAINT LOUIS, MO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  61. Optimist Club of Mexico Missouri Inc

    EIN 430907590 · Headquarters: MEXICO, MO, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  62. Optimist Club of O'Fallon MO Inc

    EIN 911938866 · Headquarters: St Charles, MO, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  63. Optimist Club of Southside Kansas City

    EIN 431242214 · Headquarters: KANSAS CITY, MO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  64. Optimist Club of St Joseph Inc

    EIN 440585778 · Headquarters: ST JOSEPH, MO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  65. Optimist International

    EIN 237003918 · Headquarters: FAYETTE, MO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  66. Optimist International

    EIN 237010146 · Headquarters: Kansas City, MO, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  67. Optimist International

    EIN 237455505 · Headquarters: Saint Louis, MO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  68. Optimist International

    EIN 381560748 · Headquarters: Saint Louis, MO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  69. Optimist International

    EIN 383652467 · Headquarters: Oran, MO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  70. Optimist International

    EIN 383678358 · Headquarters: Nixa, MO, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  71. Optimist International

    EIN 430443279 · Headquarters: SAINT LOUIS, MO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  72. Optimist International

    EIN 431199419 · Headquarters: Lees Summit, MO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  73. Optimist International

    EIN 431205361 · Headquarters: Raymore, MO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  74. Optimist International

    EIN 431220147 · Headquarters: Ballwin, MO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  75. Optimist International

    EIN 431230525 · Headquarters: el dorado springs, MO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  76. Optimist International

    EIN 431235492 · Headquarters: MARBLE HILL, MO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  77. Optimist International

    EIN 431252132 · Headquarters: Columbia, MO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  78. Optimist International

    EIN 431258071 · Headquarters: Macon, MO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  79. Optimist International

    EIN 431304807 · Headquarters: Bridgeton, MO, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  80. Optimist International

    EIN 431341830 · Headquarters: Brentwood, MO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  81. Optimist International

    EIN 431366594 · Headquarters: Belton, MO, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  82. Optimist International

    EIN 431398687 · Headquarters: Rock Port, MO, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  83. Optimist International

    EIN 431410873 · Headquarters: Blue Springs, MO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  84. Optimist International

    EIN 431549411 · Headquarters: Clinton, MO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  85. Optimist International

    EIN 431563125 · Headquarters: Strafford, MO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  86. Optimist International

    EIN 431678888 · Headquarters: Kansas City, MO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  87. Optimist International

    EIN 431753955 · Headquarters: MARSHALL, MO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  88. Optimist International

    EIN 431793101 · Headquarters: LEES SUMMIT, MO, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  89. Optimist International

    EIN 436038637 · Headquarters: Clinton, MO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  90. Optimist International

    EIN 436039524 · Headquarters: MOBERLY, MO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  91. Optimist International

    EIN 436048872 · Headquarters: St Louis, MO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  92. Optimist International

    EIN 436049800 · Headquarters: MARSHFIELD, MO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  93. Optimist International

    EIN 436052958 · Headquarters: Lebanon, MO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  94. Optimist International

    EIN 436058908 · Headquarters: Rolla, MO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  95. Optimist International

    EIN 436062766 · Headquarters: Fulton, MO, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  96. Optimist International

    EIN 436062769 · Headquarters: Excelsior Springs, MO, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  97. Optimist International

    EIN 436062775 · Headquarters: MARSHALL, MO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  98. Optimist International

    EIN 436062794 · Headquarters: Warrensburg, MO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  99. Optimist International

    EIN 436079114 · Headquarters: Maryville, MO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  100. Optimist International

    EIN 436098738 · Headquarters: Kirksville, MO, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

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