Unknown & Unclassified nonprofits in Colorado

Unknown & Unclassified nonprofits in Colorado. Browse 9,996 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. Skyline Hunting and Fishing Club

    EIN 200055273 · Headquarters: Littleton, CO, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  2. Skyline Soccer Association

    EIN 841059561 · Headquarters: Englewood, CO, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  3. Skyward Productions

    EIN 394266548 · Headquarters: Wheat Ridge, CO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  4. Slade Irrigation Company

    EIN 840321495 · Headquarters: HESPERUS, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  5. Slavic Christian Church

    EIN 841218662 · Headquarters: ARVADA, CO, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-T

  6. Sloans Lake Foundation

    EIN 335038420 · Headquarters: Denver, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  7. Slovene National Benefit Society

    EIN 237524387 · Headquarters: Edgewater, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. Slovene National Benefit Society 577

    EIN 237524579 · Headquarters: Pueblo, CO, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  9. Slow Down Move Over Colorado

    EIN 844191499 · Headquarters: GRAND JUNCTION, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  10. Small Publishers Association of North America

    EIN 841334496 · Headquarters: Colorado Springs, CO, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  11. Smart Commute Metro North

    EIN 460567410 · Headquarters: BROOMFIELD, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  12. Smcrua Inc

    EIN 452177803 · Headquarters: Grand Junction, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. Smith & Emmons Ditch Co

    EIN 840455007 · Headquarters: Longmont, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  14. Smith Lateral Company

    EIN 463805458 · Headquarters: Windsor, CO, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  15. Smocking Arts Guild of America Inc

    EIN 581769317 · Headquarters: Conifer, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  16. Smoky Hill Quilt Club

    EIN 030477978 · Headquarters: Aurora, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  17. Smoky Hill Rotary Club

    EIN 840959834 · Headquarters: AURORA, CO, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  18. Smoloskyp Inc

    EIN 510207698 · Headquarters: GRAND JUNCTION, CO, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  19. Smuggler Racquet Club

    EIN 237189833 · Headquarters: ASPEN, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  20. Snapp

    EIN 814712521 · Headquarters: Fort Collins, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  21. Sno-jets Ski Club

    EIN 742129089 · Headquarters: Colorado Springs, CO, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  22. Snow Lion Education & Family Services Inc

    EIN 421574184 · Headquarters: LONGMONT, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  23. Snowdown Durango Inc

    EIN 841027777 · Headquarters: Durango, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  24. Snowline-skydale Property Owners Association Inc

    EIN 860318262 · Headquarters: Rollinsville, CO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  25. Snowmass at Aspen Homeowners Assoc Inc

    EIN 840614170 · Headquarters: Basalt, CO, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  26. Soaring Sons and Daughters

    EIN 461025829 · Headquarters: Castle Rock, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  27. Soccer Champions League Denver

    EIN 821920390 · Headquarters: Denver, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  28. Social Ethics Club of Idaho Springs

    EIN 814348804 · Headquarters: Idaho Springs, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  29. Social Trail

    EIN 821952467 · Headquarters: Louisville, CO, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  30. Sociedad Hidalgo Inc

    EIN 431264880 · Headquarters: CASTLE ROCK, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  31. Society for Descriptive Psychology

    EIN 742154477 · Headquarters: Arvada, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  32. Society for Marketing Professional Services

    EIN 742280550 · Headquarters: EASTLAKE, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  33. Society for Neuroscience

    EIN 200069248 · Headquarters: Fort Collins, CO, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  34. Society for Nondestructive Testing Inc Colorado Section

    EIN 846045186 · Headquarters: Walsenburg, CO, 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 113686471 · Headquarters: Granby, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

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

    EIN 450498879 · Headquarters: Fountain, CO, 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 510178489 · Headquarters: Olathe, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

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

    EIN 840925475 · Headquarters: Greeley, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

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

    EIN 846036554 · Headquarters: COLORADO SPRINGS, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  40. Society for Preservation & Encrgmnt of Barbershop Quartet Singing Amer

    EIN 237057915 · Headquarters: Durango, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  41. Society for Preservation & Encrgmnt of Barbershop Quartet Singing Amer

    EIN 237057938 · Headquarters: Delta, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  42. Society for Preservation & Encrgmnt of Barbershop Quartet Singing Amer

    EIN 237064873 · Headquarters: Pueblo, CO, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  43. Society for Preservation & Encrgmnt of Barbershop Quartet Singing Amer

    EIN 463978875 · Headquarters: Englewood, CO, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  44. Society for Preservation & Encrgmnt of Barbershop Quartet Singing Amer

    EIN 846044865 · Headquarters: BOULDER, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  45. Society for Technical Communication

    EIN 846038432 · Headquarters: Denver, CO, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  46. Society for the History of Discoveries

    EIN 237214274 · Headquarters: Denver, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  47. Society of American Foresters

    EIN 846051298 · Headquarters: Kremmling, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  48. Society of American Magicians

    EIN 042760267 · Headquarters: DENVER, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  49. Society of American Military Engineers Denver Metro Post

    EIN 237396232 · Headquarters: DENVER, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  50. Society of American Military Engineers Pikes Peak Post

    EIN 841092807 · Headquarters: COLORADO SPRINGS, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  51. Society of Cable Telecommunications Engineers Inc

    EIN 222158409 · Headquarters: LOUISVILLE, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  52. Society of Critical Care Medicine

    EIN 874783891 · Headquarters: Denver, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  53. Society of Explosive Engineers

    EIN 841219735 · Headquarters: Morrison, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  54. Society of Government Meeting Professionals Inc

    EIN 841127890 · Headquarters: Glendale, CO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  55. Society of Health and Physical Educators of Colorado

    EIN 846119152 · Headquarters: Castle Rock, CO, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  56. Society of Hispanic Professional Engineers of Colorado

    EIN 263322437 · Headquarters: Denver, CO, US · Unknown & Unclassified · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  57. Society of Manufacturing Engineeres

    EIN 742683336 · Headquarters: Denver, CO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  58. Society of Manufacturing Engineers

    EIN 900753541 · Headquarters: Berthoud, CO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  59. Society of Missionaries of Mercy Inc

    EIN 521570088 · Headquarters: Colorado Springs, CO, US · Unknown & Unclassified · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  60. Society of Petrophysicists and Well Log Analysts Inc

    EIN 742521232 · Headquarters: Denver, CO, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  61. Society of Pi Kappa Lambda

    EIN 237335283 · Headquarters: Greeley, CO, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  62. Society of Plastics Engineers

    EIN 581917186 · Headquarters: Englewood, CO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  63. Society of Professional Journalists

    EIN 846035830 · Headquarters: Denver, CO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  64. Society of Professional Journalists Csu Chapter

    EIN 841480029 · Headquarters: Fort Collins, CO, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  65. Society of Women Engineers

    EIN 275008384 · Headquarters: Boulder, CO, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  66. Society of Women Engineers

    EIN 841262171 · Headquarters: Colorado Springs, CO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  67. Society of Women Engineers Rocky Mountain Section

    EIN 841127067 · Headquarters: Lakewood, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  68. Soco Derby Dollz

    EIN 814502669 · Headquarters: Canon City, CO, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  69. Sogetsu Colorado Branch

    EIN 841241528 · Headquarters: Superior, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  70. Soglo Family Service Inc

    EIN 934038595 · Headquarters: Aurora, CO, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  71. Soil and Water Conservation Society

    EIN 840537634 · Headquarters: Alamosa, CO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  72. Solar Seeds

    EIN 721618806 · Headquarters: Colorado Springs, CO, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  73. Solid Waste Assoc of N America Inc

    EIN 742273261 · Headquarters: DENVER, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  74. Sombrero Marsh United Corp

    EIN 921524938 · Headquarters: Superior, CO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  75. Somebody Cares Project

    EIN 842639434 · Headquarters: Trinidad, CO, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  76. Someone Cares Charitable Foundation

    EIN 363415880 · Headquarters: KITTREDGE, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  77. Somerset Ii Building 243 Owners Association

    EIN 841005006 · Headquarters: Aurora, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  78. Somerset Lane Homeowners Association

    EIN 933637274 · Headquarters: Golden, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  79. Sons & Daughters Pearl Harbor Survivors

    EIN 830483562 · Headquarters: WESTMINSTER, CO, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  80. Sons of Confederate Veterans Inc

    EIN 200687507 · Headquarters: Woodland Park, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  81. Sons of Confederate Veterans Inc

    EIN 208989247 · Headquarters: Grand Junction, CO, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  82. Sons of Confederate Veterans Inc

    EIN 842215248 · Headquarters: Penrose, CO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  83. Sons of Confederate Veterans Inc

    EIN 993370326 · Headquarters: Penrose, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  84. Sons of Italy in America

    EIN 300069215 · Headquarters: Salida, CO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  85. Sons of Italy in America

    EIN 371618304 · Headquarters: Canon City, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  86. Sons of Italy in America

    EIN 452901301 · Headquarters: Colorado Springs, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  87. Sons of Italy in America

    EIN 841307891 · Headquarters: DENVER, CO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  88. Sons of Norway

    EIN 237360854 · Headquarters: COLORADO SPGS, CO, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  89. Sons of Norway

    EIN 272071902 · Headquarters: Kremmling, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  90. Sons of Norway

    EIN 510172807 · Headquarters: Loveland, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  91. Sons of Norway

    EIN 840816202 · Headquarters: Longmont, CO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  92. Sons of Norway

    EIN 841146561 · Headquarters: Grand Junction, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  93. Sons of Norway

    EIN 841479677 · Headquarters: Denver, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  94. Sons of Norway 6-110 Trollheim Denver

    EIN 237425418 · Headquarters: LAKEWOOD, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  95. Sons of Union Veterans of the Civil War

    EIN 810657277 · Headquarters: Grand Junction, CO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  96. Sons of Union Veterans of the Civil War

    EIN 841429694 · Headquarters: Colorado Springs, CO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  97. Sons of Union Veterans of the Civil War

    EIN 870637946 · Headquarters: Colorado Springs, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  98. Sons of Union Veterans of the Civil War

    EIN 933682409 · Headquarters: Penrose, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  99. Sopris Barracuda Swim Team

    EIN 742480401 · Headquarters: Glenwood Springs, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  100. Soroco Ram Fans Booster Association

    EIN 742438638 · Headquarters: OAK CREEK, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

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