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. American Marketing Association Inc

    EIN 841187898 · Headquarters: DENVER, CO, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  2. American Mothers Inc

    EIN 840995515 · Headquarters: Longmont, CO, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  3. American Mountain Guides Association Inc

    EIN 841213723 · Headquarters: BOULDER, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  4. American National Cattlewomen Inc

    EIN 846036701 · Headquarters: ENGLEWOOD, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  5. American Natural Foods Inc

    EIN 650485701 · Headquarters: BOULDER, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  6. American Nephrology Nurses Association

    EIN 272957131 · Headquarters: Aurora, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  7. American Numismatic Association

    EIN 486063403 · Headquarters: COLORADO SPRINGS, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  8. American Nursing Informatics Association Colorado Chapter

    EIN 814347178 · Headquarters: Denver, CO, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  9. American Orff-schulwerk Association

    EIN 461603582 · Headquarters: Durango, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  10. American Outlaws Colorado Springs Chapter

    EIN 473802477 · Headquarters: Colorado Springs, CO, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  11. American Outlaws Denver

    EIN 811275836 · Headquarters: Denver, CO, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  12. American Outlaws Fort Collins Chapter

    EIN 883896949 · Headquarters: Fort Collins, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. American Pharmacists Association Academy of Student Pharmacists

    EIN 846040298 · Headquarters: Aurora, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  14. American Postal Workers Union

    EIN 237019717 · Headquarters: Fort Collins, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  15. American Postal Workers Union

    EIN 237019725 · Headquarters: Alamosa, CO, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  16. American Postal Workers Union

    EIN 237342659 · Headquarters: Aurora, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  17. American Postal Workers Union

    EIN 510157845 · Headquarters: DENVER, CO, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  18. American Postal Workers Union

    EIN 840568501 · Headquarters: AURORA, CO, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  19. American Postal Workers Union

    EIN 840865789 · Headquarters: Grand Junction, CO, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  20. American Postal Workers Union

    EIN 840879201 · Headquarters: Pueblo, CO, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  21. American Postal Workers Union

    EIN 846050875 · Headquarters: Littleton, CO, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  22. American Postal Workers Union 229

    EIN 840441436 · Headquarters: Aurora, CO, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  23. American Postal Workers Union Auxiliary

    EIN 521364143 · Headquarters: Grand Junction, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  24. American Postal Workers Union Auxiliary

    EIN 846041779 · Headquarters: Grand Junction, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  25. American Production & Inventory Control Society Of Colorado

    EIN 840820326 · Headquarters: Denver, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  26. American Production & Inventory Control Society Pikes Peak Chapter

    EIN 840804726 · Headquarters: Colorado Springs, CO, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  27. American Production and Inventory Control Society

    EIN 742141058 · Headquarters: BOULDER, CO, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  28. American Rental Association

    EIN 841161896 · Headquarters: Greeley, CO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  29. American Rose Society

    EIN 237245656 · Headquarters: Denver, CO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  30. American Rose Society

    EIN 352363415 · Headquarters: COLORADO SPRINGS, CO, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  31. American Rose Society

    EIN 581782976 · Headquarters: Longmont, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  32. American S Faith and Freedoms

    EIN 205105841 · Headquarters: aurora, CO, US · Unknown & Unclassified · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  33. American S Freedoms

    EIN 204879533 · Headquarters: Fort Collins, CO, US · Unknown & Unclassified · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  34. American Scientific Glassblowers Society

    EIN 510096024 · Headquarters: Eaton, CO, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  35. American Sheep Industry Association Inc

    EIN 840449271 · Headquarters: CENTENNIAL, CO, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  36. American Snowsports Education Association

    EIN 416046975 · Headquarters: LAKEWOOD, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  37. American Snowsports Education Association - Education Foundation

    EIN 237191019 · Headquarters: LAKEWOOD, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-T

  38. American Society of Appraisers

    EIN 521343668 · Headquarters: Parker, CO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  39. American Society of Farm Managers and Rural Appraisers Inc

    EIN 362443304 · Headquarters: GLENDALE, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  40. American Society of Heating Refrigerating & A-c Engineers

    EIN 841108560 · Headquarters: Colorado Springs, CO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  41. American Society of Heating Refrigerating & A-c Engineers

    EIN 846117378 · Headquarters: Golden, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  42. American Society of Home Inspectors

    EIN 841031847 · Headquarters: Denver, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  43. American Society of Interior Designers Colorado Chapter

    EIN 237417538 · Headquarters: ARVADA, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  44. American Society of Plumbing Engineers

    EIN 841391812 · Headquarters: Larkspur, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  45. American Society of Radiologic Technologists

    EIN 203606419 · Headquarters: Grand Junction, CO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  46. American Sportsman Fraternal Ord

    EIN 200539331 · Headquarters: FORT COLLINS, CO, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  47. American Staffing Association

    EIN 742116412 · Headquarters: Loveland, CO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  48. American Statistical Association

    EIN 521665928 · Headquarters: Denver, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  49. American String Teachers Association Incorporated

    EIN 846049603 · Headquarters: Denver, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  50. American Subcontractors Association

    EIN 840639802 · Headquarters: GOLDEN, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  51. American Theatre Organ Society Rocky Mountain Chapter

    EIN 237303707 · Headquarters: Loveland, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  52. American Thoracic Society Inc

    EIN 800659995 · Headquarters: Denver, CO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  53. American Vaulting Association

    EIN 271222882 · Headquarters: Loveland, CO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  54. American Vaulting Association

    EIN 272441297 · Headquarters: Fort Lupton, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  55. American Vaulting Association

    EIN 371846473 · Headquarters: Castle Rock, CO, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  56. American Vaulting Association

    EIN 471273406 · Headquarters: Arvada, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  57. American Vaulting Association

    EIN 844501594 · Headquarters: Greeley, CO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  58. American Volkssport Association Inc

    EIN 841142497 · Headquarters: Colorado Springs, CO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  59. American Volkssport Association Inc

    EIN 841143440 · Headquarters: BOULDER, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  60. American Water Resources Association Colorado Section

    EIN 840979724 · Headquarters: Denver, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  61. American Wine Society

    EIN 872209049 · Headquarters: Louisville, CO, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  62. American Wine Society of Colorado Springs

    EIN 472965714 · Headquarters: Colorado Springs, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  63. Americans For Fair Online Competition

    EIN 874494220 · Headquarters: Centennial, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  64. Ami of Adams County Inc

    EIN 841051636 · Headquarters: Thornton, CO, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  65. Amity Mutual Irrigation Company

    EIN 840005730 · Headquarters: HOLLY, CO, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  66. Amp the Cause

    EIN 201706475 · Headquarters: Denver, CO, USA · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990

  67. Amvets

    EIN 320144381 · Headquarters: Westminster, CO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  68. Amvets

    EIN 841020124 · Headquarters: ELIZABETH, CO, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  69. Anasazi Historical Society Inc

    EIN 742242316 · Headquarters: DOLORES, CO, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  70. Ancient & Accepted Scottish Rite of Free Masonry So Juris USA

    EIN 840215625 · Headquarters: GRAND JCT, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. Ancient & Accepted Scottish Rite of Freemasonry

    EIN 840005895 · Headquarters: Denver, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  72. Ancient & Accepted Scottish Rite of Southern Colorado Consistory

    EIN 742094726 · Headquarters: COLORADO SPRINGS, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  73. Ancient Arabic Order of the Nobles of the Mystic Shrine of Na

    EIN 237325066 · Headquarters: Eads, CO, US · Unknown & Unclassified · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  74. Ancient Egyptian Arabic Order Nobles Mystic Shrine of N & S Amer

    EIN 521877017 · Headquarters: COLORADO SPRINGS, CO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  75. Ancient Free & Accepted Mason of Co 160 East Denver

    EIN 237147743 · Headquarters: BAILEY, CO, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  76. Ancient Free & Accepted Masons

    EIN 840910498 · Headquarters: Pueblo, CO, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  77. Ancient Free & Accepted Masons Co Lupton Lodge No 119 Af & Am

    EIN 237144488 · Headquarters: FORT LUPTON, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  78. Ancient Free & Accepted Masons Of

    EIN 840005998 · Headquarters: DENVER, CO, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  79. Ancient Free & Accepted Masons of Colo 1 Golden City

    EIN 840005938 · Headquarters: Golden, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  80. Ancient Free & Accepted Masons of Colora Montrose Masonic Lodge 63

    EIN 237144524 · Headquarters: RIDGWAY, CO, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  81. Ancient Free & Accepted Masons of Colora Telluride Lodge 56

    EIN 237144530 · Headquarters: RIDGWAY, CO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  82. Ancient Free & Accepted Masons of Colorado

    EIN 237104733 · Headquarters: GLENWOOD SPGS, CO, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  83. Ancient Free & Accepted Masons of Colorado

    EIN 237106113 · Headquarters: THORNTON, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  84. Ancient Free & Accepted Masons of Colorado

    EIN 237106805 · Headquarters: Platteville, CO, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  85. Ancient Free & Accepted Masons of Colorado

    EIN 237107102 · Headquarters: Aurora, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  86. Ancient Free & Accepted Masons of Colorado

    EIN 237109196 · Headquarters: Mancos, CO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  87. Ancient Free & Accepted Masons of Colorado

    EIN 237109707 · Headquarters: Castle Rock, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  88. Ancient Free & Accepted Masons of Colorado

    EIN 237144461 · Headquarters: GRAND JCT, CO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  89. Ancient Free & Accepted Masons of Colorado

    EIN 237144464 · Headquarters: Woodland Park, CO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  90. Ancient Free & Accepted Masons of Colorado

    EIN 237144466 · Headquarters: Fountain, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  91. Ancient Free & Accepted Masons of Colorado

    EIN 237144469 · Headquarters: Thornton, CO, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  92. Ancient Free & Accepted Masons of Colorado

    EIN 237144478 · Headquarters: Byers, CO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  93. Ancient Free & Accepted Masons of Colorado

    EIN 237144481 · Headquarters: Dolores, CO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  94. Ancient Free & Accepted Masons of Colorado

    EIN 237144489 · Headquarters: Brush, CO, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  95. Ancient Free & Accepted Masons of Colorado

    EIN 237144492 · Headquarters: Gunnison, CO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  96. Ancient Free & Accepted Masons of Colorado

    EIN 237144494 · Headquarters: Lake City, CO, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  97. Ancient Free & Accepted Masons of Colorado

    EIN 237144498 · Headquarters: LITTLETON, CO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  98. Ancient Free & Accepted Masons of Colorado

    EIN 237144503 · Headquarters: Georgetown, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  99. Ancient Free & Accepted Masons of Colorado

    EIN 237144507 · Headquarters: NUCLA, CO, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  100. Ancient Free & Accepted Masons of Colorado

    EIN 237144518 · Headquarters: Brighton, CO, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

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