Nonprofits in Montana

Nonprofits in Montana. Browse 13,722 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 Round-Up

    EIN 863106116 · Headquarters: Missoula, MT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  2. Operation Valor

    EIN 462435424 · Headquarters: CORVALLIS, MT, USA · Public & Societal Benefit · Latest available filing year: 2014 · Primary form: IRS Form 990-EZ

  3. Operative Plasterers & Cement Masons International Association

    EIN 816013642 · Headquarters: Bigfork, MT, US · Employment · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  4. Opheim Development Inc

    EIN 272254790 · Headquarters: OPHEIM, MT, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  5. Opheim Rodeo Club Inc

    EIN 365007665 · Headquarters: Opheim, MT, US · Recreation & Sports · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  6. Opheim Youth Organization

    EIN 842345098 · Headquarters: OPHEIM, MT, US · Youth Development · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  7. Oportuno

    EIN 204784424 · Headquarters: Bozeman, MT, US · International, Foreign Affairs & National Security · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  8. Opportunities for All Scholarship Inc

    EIN 010932053 · Headquarters: CHOTEAU, MT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  9. Opportunities Inc

    EIN 810295813 · Headquarters: GREAT FALLS, MT, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  10. Opportunity Citizens Protection Association

    EIN 412181187 · Headquarters: Anaconda, MT, US · Community Improvement & Capacity Building · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  11. Opportunity Community Club

    EIN 810457468 · Headquarters: ANACONDA, MT, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  12. Opportunity for Life Inc

    EIN 465135904 · Headquarters: Manhattan, MT, US · International, Foreign Affairs & National Security · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. Opportunity Link Inc

    EIN 421628365 · Headquarters: HAVRE, MT, USA · Housing & Shelter · Latest available filing year: 2024 · Primary form: IRS Form 990

  14. Opportunity Resources Inc

    EIN 810247708 · Headquarters: Missoula, MT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  15. Opt Out Learning Center

    EIN 920377194 · Headquarters: Bozeman, MT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  16. Optics and Photonics Society at Montana State University

    EIN 873934137 · Headquarters: Bozeman, MT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  17. Optimist Club of Helena Inc

    EIN 816020082 · Headquarters: Clancy, MT, US · Youth Development · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  18. Optimist International

    EIN 237010140 · Headquarters: Billings, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  19. Optimist International

    EIN 810380040 · Headquarters: Helena, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  20. Optimist International

    EIN 810447277 · Headquarters: Billings, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  21. Optimist International

    EIN 810474931 · Headquarters: Wolf Point, MT, US · Youth Development · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  22. Optimist International

    EIN 810514560 · Headquarters: Billings, MT, US · Youth Development · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  23. Optimist International

    EIN 810648431 · Headquarters: Billings, MT, US · Youth Development · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  24. Optimist International

    EIN 816006617 · Headquarters: Great Falls, MT, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  25. Optimist International

    EIN 816012096 · Headquarters: Havre, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  26. Optimist International

    EIN 816013739 · Headquarters: Billings, MT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  27. Optimist International

    EIN 816014005 · Headquarters: Bozeman, MT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. Optimist International

    EIN 816020041 · Headquarters: Bozeman, MT, US · Youth Development · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  29. Optimist International

    EIN 833642425 · Headquarters: BILLINGS, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  30. Optimist International

    EIN 900112884 · Headquarters: Florence, MT, US · Youth Development · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  31. Optimist International

    EIN 900300562 · Headquarters: Roundup, MT, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  32. Optimist International

    EIN 901021712 · Headquarters: Billings, MT, US · Youth Development · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  33. Orchards of Montana

    EIN 932582697 · Headquarters: Great Falls, MT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  34. Orchid Club

    EIN 821874184 · Headquarters: Belgrade, MT, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  35. Order of Eastern Star of Montana

    EIN 237009191 · Headquarters: Laurel, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  36. Order of Eastern Star of Montana

    EIN 237186905 · Headquarters: Deer Lodge, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  37. Order of Eastern Star of Montana

    EIN 237258395 · Headquarters: Grass Range, MT, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  38. Order of Eastern Star of Montana

    EIN 237339526 · Headquarters: Sidney, MT, US · Science & Technology · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  39. Order of Eastern Star of Montana

    EIN 237352957 · Headquarters: Billings, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  40. Order of Eastern Star of Montana

    EIN 237367054 · Headquarters: Laurel, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  41. Order of Eastern Star of Montana

    EIN 237416930 · Headquarters: Wolf Point, MT, US · Science & Technology · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  42. Order of Eastern Star of Montana

    EIN 810131171 · Headquarters: Missoula, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  43. Order of Eastern Star of Montana

    EIN 810146460 · Headquarters: Helena, MT, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  44. Order of Eastern Star of Montana

    EIN 810178963 · Headquarters: Butte, MT, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  45. Order of Eastern Star of Montana

    EIN 810178977 · Headquarters: Laurel, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  46. Order of Eastern Star of Montana

    EIN 810179000 · Headquarters: Helena, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  47. Order of Eastern Star of Montana

    EIN 810179016 · Headquarters: Great Falls, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  48. Order of Eastern Star of Montana

    EIN 810179021 · Headquarters: Missoula, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  49. Order of Eastern Star of Montana

    EIN 810222886 · Headquarters: Bozeman, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  50. Order of Eastern Star of Montana

    EIN 810398027 · Headquarters: Thompson Falls, MT, US · Mutual & Membership Benefit · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  51. Order of Eastern Star of Montana

    EIN 816012416 · Headquarters: Kalispell, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  52. Order of Eastern Star of Montana

    EIN 816014105 · Headquarters: Roundup, MT, US · Science & Technology · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  53. Order of Eastern Star of Montana

    EIN 816034226 · Headquarters: Lewistown, MT, US · Science & Technology · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  54. Order of Eastern Star of Montana

    EIN 816035094 · Headquarters: Havre, MT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  55. Order of Eastern Star of Montana

    EIN 816035278 · Headquarters: Terry, MT, US · Science & Technology · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  56. Order of Eastern Star of Montana

    EIN 816035283 · Headquarters: Hinsdale, MT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  57. Order of Eastern Star of Montana

    EIN 816035286 · Headquarters: Hobson, MT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  58. Order of Eastern Star of Montana

    EIN 816035287 · Headquarters: Conrad, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  59. Order of Eastern Star of Montana

    EIN 816035288 · Headquarters: Superior, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  60. Order of Eastern Star of Montana

    EIN 816035294 · Headquarters: Big Sandy, MT, US · Science & Technology · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  61. Order of Eastern Star of Montana

    EIN 816035297 · Headquarters: Wilsall, MT, US · Science & Technology · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  62. Order of Eastern Star of Montana

    EIN 816035303 · Headquarters: Worden, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  63. Order of Eastern Star of Montana

    EIN 816035309 · Headquarters: Vida, MT, US · Science & Technology · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  64. Order of Eastern Star of Montana

    EIN 816035310 · Headquarters: Kalispell, MT, US · Science & Technology · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  65. Order of Eastern Star of Montana

    EIN 816035314 · Headquarters: Hot Springs, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  66. Order of Eastern Star of Montana

    EIN 816035315 · Headquarters: Baker, MT, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  67. Order of Eastern Star of Montana

    EIN 816035318 · Headquarters: Drummond, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  68. Order of Eastern Star of Montana

    EIN 816035321 · Headquarters: Polson, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  69. Order of Eastern Star of Montana

    EIN 816035324 · Headquarters: Manhattan, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  70. Order of Eastern Star of Montana

    EIN 816035326 · Headquarters: Whitefish, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  71. Order of Eastern Star of Montana

    EIN 816035327 · Headquarters: Fort Benton, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  72. Order of Eastern Star of Montana

    EIN 816035328 · Headquarters: Bridger, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  73. Order of Eastern Star of Montana

    EIN 816035332 · Headquarters: Malta, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  74. Order of Eastern Star of Montana

    EIN 816035334 · Headquarters: Hamilton, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  75. Order of Eastern Star of Montana

    EIN 816035335 · Headquarters: Forsyth, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  76. Order of Eastern Star of Montana

    EIN 816035337 · Headquarters: Miles City, MT, US · Mutual & Membership Benefit · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  77. Order of Eastern Star of Montana

    EIN 816035338 · Headquarters: Chinook, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  78. Order of Eastern Star of Montana

    EIN 816035342 · Headquarters: Victor, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  79. Order of Eastern Star of Montana

    EIN 816035344 · Headquarters: Dillon, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  80. Order of Eastern Star of Montana

    EIN 816035345 · Headquarters: White Sulphur Springs, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  81. Order of Eastern Star of Montana

    EIN 816035346 · Headquarters: Sheridan, MT, US · Science & Technology · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  82. Order of Eastern Star of Montana

    EIN 816035347 · Headquarters: Stevensville, MT, US · Mutual & Membership Benefit · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  83. Order of Eastern Star of Montana

    EIN 816035348 · Headquarters: Livingston, MT, US · Science & Technology · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  84. Order of Eastern Star of Montana

    EIN 816035349 · Headquarters: Townsend, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  85. Order of Eastern Star of Montana

    EIN 816035377 · Headquarters: Great Falls, MT, US · Mutual & Membership Benefit · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  86. Order of Eastern Star of Montana

    EIN 816035380 · Headquarters: Hardin, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  87. Order of Eastern Star of Montana

    EIN 816035434 · Headquarters: Anaconda, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  88. Order of Runeberg 105 Butte

    EIN 810389174 · Headquarters: BUTTE, MT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  89. Order of the Eastern Star of Montana

    EIN 816035308 · Headquarters: Billings, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  90. Order of the Eastern Star-grand Chapter

    EIN 810178970 · Headquarters: LAUREL, MT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  91. Order of the White Shrine of Jerusalem

    EIN 237513924 · Headquarters: BOZEMAN, MT, US · Mutual & Membership Benefit · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  92. Order of the White Shrine of Jerusalem

    EIN 237514119 · Headquarters: Missoula, MT, US · Mutual & Membership Benefit · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  93. Organic Advisory and Education Council

    EIN 452308574 · Headquarters: DUTTON, MT, US · Food, Agriculture & Nutrition · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  94. Organic Montana

    EIN 853639770 · Headquarters: Missoula, MT, US · Food, Agriculture & Nutrition · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  95. Organization Buenos Vecinos

    EIN 853478722 · Headquarters: Columbia Falls, MT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  96. Organizational Consulting Diagnostics Ocd Foundation Inc

    EIN 871558403 · Headquarters: Helena, MT, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  97. Original Governors Mansion Restoration Society

    EIN 810490184 · Headquarters: HELENA, MT, US · Arts, Culture & Humanities · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  98. Orion the Hunters Institute

    EIN 364053004 · Headquarters: Helena, MT, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  99. Oro Y Plata Foundation

    EIN 460512750 · Headquarters: KALISPELL, MT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  100. Orphan Girl Childrens Theatre

    EIN 465357988 · Headquarters: BUTTE, MT, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

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