Unknown & Unclassified nonprofits in Montana

Unknown & Unclassified nonprofits in Montana. Browse 4,152 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. Sidney Saddle Club

    EIN 810436062 · Headquarters: SIDNEY, MT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  2. Sidney Senior Citizens Center

    EIN 810412614 · Headquarters: SIDNEY, MT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  3. Sidney Sons of Norway Cultural Center

    EIN 810387509 · Headquarters: SIDNEY, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  4. Sigma Alpha Building Corporation

    EIN 810406791 · Headquarters: MISSOULA, MT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  5. Sigma Alpha Epsilon Fraternity

    EIN 810194530 · Headquarters: BELGRADE, MT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  6. Sigma Nu Fraternity

    EIN 810194570 · Headquarters: MISSOULA, MT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  7. Sigma Phi Epsilon Fraternity Inc

    EIN 816017992 · Headquarters: Bozeman, MT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  8. Sigma Theta Tau Inc

    EIN 311042720 · Headquarters: Great Falls, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  9. Sigma Xi Chapter Montana State University-bozeman

    EIN 260690000 · Headquarters: Bozeman, MT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  10. Silver Bow County Developmental Disabilities Council Inc

    EIN 810367066 · Headquarters: BUTTE, MT, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  11. Silver Bow Fire Training Center Inc

    EIN 810422371 · Headquarters: Butte, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  12. Silver Bow Joint Apprentice

    EIN 810421982 · Headquarters: BUTTE, MT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  13. Silver Bow Tavern Association

    EIN 810521596 · Headquarters: BUTTE, MT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  14. Silver Creek Stock 4-H Club

    EIN 371780444 · Headquarters: Helena, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  15. Silver Tip Ranch Association Inc

    EIN 136266046 · Headquarters: LIVINGSTON, MT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  16. Sizzling Salsa Bozeman

    EIN 990891321 · Headquarters: Belgrade, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  17. Ski Roost Inc

    EIN 810366468 · Headquarters: RED LODGE, MT, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  18. Skills USA Inc

    EIN 816017200 · Headquarters: HAVRE, MT, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  19. Skyline Sportsman Association

    EIN 816012348 · Headquarters: Butte, MT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  20. Sleeping Giant Flying Club Inc

    EIN 363769365 · Headquarters: HELENA, MT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  21. Small Fry Football Association of Helena

    EIN 237281928 · Headquarters: HELENA, MT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  22. Small Wonder Child Care Inc

    EIN 810458644 · Headquarters: LEWISTOWN, MT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  23. Smelter City All Stars

    EIN 270987329 · Headquarters: Butte, MT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  24. Smith Creek Water Resource

    EIN 300496346 · Headquarters: Wilsall, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  25. Smith River Water Users Association

    EIN 810275130 · Headquarters: WHITE SULPHUR SPRINGS, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  26. Smith Valley Grange

    EIN 810442409 · Headquarters: Kalispell, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  27. Snow Dance Ski Association

    EIN 810488414 · Headquarters: HAVRE, MT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  28. Snowbird Enterprises Inc

    EIN 205545719 · Headquarters: Frenchtown, MT, US · Unknown & Unclassified · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  29. Snowy Mountains Muzzleloader Club

    EIN 270902489 · Headquarters: Grass Range, MT, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  30. Soccer Assoc for Youth

    EIN 522396471 · Headquarters: Stevensville, MT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  31. Soccer Education Foundation Inc

    EIN 810427214 · Headquarters: Bozeman, MT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  32. Social Club

    EIN 810434833 · Headquarters: Colstrip, MT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  33. Society for Preservation & Encourmt of Barbershop Quartet Singing Amer

    EIN 237442891 · Headquarters: Bozeman, MT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  34. Society for Preservation & Encourmt of Barbershop Quartet Singing Amer

    EIN 810303469 · Headquarters: Missoula, MT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  35. Society for Preservation & Encourmt of Barbershop Quartet Singing Amer

    EIN 810362847 · Headquarters: Helena, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  36. Society for Preservation & Encourmt of Barbershop Quartet Singing Amer

    EIN 816005871 · Headquarters: Billings, MT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  37. Society for Preservation & Encourmt of Barbershop Quartet Singing Amer

    EIN 816030585 · Headquarters: Whitefish, MT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  38. Society for Preservation Encrgmnt of Barbershop Quartet Singing Amer

    EIN 814298886 · Headquarters: Billings, MT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  39. Society for Range Management

    EIN 930411765 · Headquarters: BILLINGS, MT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  40. Society of American Foresters

    EIN 237397217 · Headquarters: Missoula, MT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  41. Society of American Military Engineers

    EIN 900281243 · Headquarters: Malmstrom AFB, MT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  42. Society of Health and Physical Educators

    EIN 810364356 · Headquarters: Helena, MT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  43. Society of Mayflower Descendants in the State of Montana

    EIN 810401064 · Headquarters: BILLINGS, MT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  44. Soil and Water Conservation Society

    EIN 810361298 · Headquarters: Stanford, MT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  45. Solo Stars

    EIN 810446264 · Headquarters: Lolo, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  46. Sons and Daughters of Montana Pioneers

    EIN 810196277 · Headquarters: Helena, MT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  47. Sons of American Legion Squad 115

    EIN 800531673 · Headquarters: Butte, MT, US · Unknown & Unclassified · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  48. Sons of Norway

    EIN 237143239 · Headquarters: Kalispell, MT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  49. Sons of Norway

    EIN 237213738 · Headquarters: Billings, MT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  50. Sons of Norway

    EIN 237326346 · Headquarters: Big Timber, MT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  51. Sons of Norway

    EIN 237360851 · Headquarters: East Helena, MT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  52. Sons of Norway

    EIN 237425409 · Headquarters: Lewistown, MT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  53. Sons of Norway

    EIN 237425410 · Headquarters: Libby, MT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  54. Sons of Norway

    EIN 237425411 · Headquarters: Polson, MT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  55. Sons of Norway

    EIN 237425412 · Headquarters: Bozeman, MT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  56. Sons of Norway

    EIN 237525740 · Headquarters: CUT BANK, MT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  57. Sons of Norway

    EIN 237525744 · Headquarters: Missoula, MT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  58. Sons of Norway

    EIN 237525745 · Headquarters: Sidney, MT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  59. Sons of Norway

    EIN 510172806 · Headquarters: Glasgow, MT, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  60. Sons of Norway

    EIN 810416356 · Headquarters: Miles City, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  61. Sons of Norway

    EIN 810417543 · Headquarters: Dillon, MT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  62. Sons of Norway

    EIN 810538290 · Headquarters: corvallis, MT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  63. Sons of Norway

    EIN 816033521 · Headquarters: GREAT FALLS, MT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  64. Sons of Norway District 4

    EIN 237525766 · Headquarters: LEWISTOWN, MT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  65. Soroptimist International of the Americas Inc

    EIN 316033114 · Headquarters: Hamilton, MT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  66. South Central Montana Regional Mental Health Center

    EIN 810359499 · Headquarters: BILLINGS, MT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  67. South Park Senior Citizens Center

    EIN 810408019 · Headquarters: Billings, MT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  68. South Side Canal Users Association

    EIN 810456551 · Headquarters: WHITE SULPHUR SPRINGS, MT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  69. Southeast Electric Cooperative Inc

    EIN 810228814 · Headquarters: EKALAKA, MT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  70. Southeast Montana Area Revitalization Team

    EIN 900073844 · Headquarters: BAKER, MT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  71. Southeastern Montana Rural Health Initiative

    EIN 810361800 · Headquarters: Roundup, MT, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  72. Southern Montana Climbers Coalition

    EIN 922374084 · Headquarters: Red Lodge, MT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  73. Southern Montana Sugarbeet Growers Association

    EIN 510185163 · Headquarters: Bridger, MT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  74. Southwest Montana Building Industry Association

    EIN 810405346 · Headquarters: BOZEMAN, MT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  75. Southwest Montana Chapter Safari Club International

    EIN 841377461 · Headquarters: BOZEMAN, MT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  76. Southwest Montana Conservation Coalition

    EIN 332759301 · Headquarters: Jackson, MT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  77. Southwest Montana Farm & Ranch Brokers

    EIN 810542141 · Headquarters: Bozeman, MT, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  78. Southwest Montana Realtors

    EIN 810386428 · Headquarters: BOZEMAN, MT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  79. Southwest Montana Youth Partners

    EIN 873555354 · Headquarters: BOULDER, MT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  80. Southwestern Montana Association of Life Underwriter

    EIN 264207681 · Headquarters: Butte, MT, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  81. Spain Ferris Ditch Company

    EIN 810196472 · Headquarters: Belgrade, MT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  82. Special Friends Advocacy Program Inc

    EIN 810434776 · Headquarters: Kalispell, MT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  83. Special K Ranch

    EIN 363378581 · Headquarters: COLUMBUS, MT, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  84. Spirit of God Ministries Ag

    EIN 810432055 · Headquarters: Ronan, MT, US · Unknown & Unclassified · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  85. Sportsmans Conservation Club of Huntley

    EIN 810300765 · Headquarters: BALLANTINE, MT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  86. St James Healthcare Foundation Inc

    EIN 651202190 · Headquarters: BUTTE, MT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  87. St Lawrence Memorial Preservation

    EIN 464391937 · Headquarters: WALKERVILLE, MT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  88. St Marys Catholic Education Trust

    EIN 816053635 · Headquarters: Malta, MT, US · Unknown & Unclassified · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  89. St Paul Lutheran Church

    EIN 810296745 · Headquarters: MISSOULA, MT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-T

  90. St Pauls of the Stillwater Episcopal Church

    EIN 300625213 · Headquarters: Absarokee, MT, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  91. St Peter's Health Foundation

    EIN 810392270 · Headquarters: HELENA, MT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  92. St Peters Hospital Association

    EIN 816010311 · Headquarters: HELENA, MT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  93. St Regis Community Council

    EIN 810420425 · Headquarters: Saint Regis, MT, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ

  94. St Regis Senior Citizens Center Inc

    EIN 810413911 · Headquarters: St Regis, MT, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  95. St Thomas Child & Family Center

    EIN 810233495 · Headquarters: GREAT FALLS, MT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  96. St Vincent Healthcare Foundation Inc

    EIN 810468034 · Headquarters: BILLINGS, MT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  97. St Vincent Hospital Auxiliary

    EIN 237293730 · Headquarters: BILLINGS, MT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  98. Star Touring & Riding Great Falls Chapter Nbr 476

    EIN 270991561 · Headquarters: Great Falls, MT, US · Unknown & Unclassified · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  99. Starfire International

    EIN 262883174 · Headquarters: Helena, MT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  100. Starr Foundation

    EIN 810487929 · Headquarters: Fairview, MT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

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