Unknown & Unclassified nonprofits

Unknown & Unclassified nonprofits. Browse 557,756 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. National Ski Areas Association

    EIN 131973926 · Headquarters: LAKEWOOD, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  2. National Ski Patrol Central Division

    EIN 237241210 · Headquarters: CLARKSTON, MI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  3. National Ski Patrol System Inc

    EIN 237253506 · Headquarters: MISSOULA, MT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  4. National Ski Patrol System Inc

    EIN 840398775 · Headquarters: LAKEWOOD, CO, US · Unknown & Unclassified · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  5. National Ski Patrol System Inc

    EIN 876155469 · Headquarters: Ammon, ID, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  6. National Ski Patrol System Inc-Alaska

    EIN 926007818 · Headquarters: ANCHORAGE, AK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  7. National Skin Education Foundation Inc

    EIN 203567454 · Headquarters: NORCROSS, GA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. National Slag Association

    EIN 530116335 · Headquarters: COATESVILLE, PA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  9. National Slovak Society of the USA

    EIN 061409846 · Headquarters: Duryea, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  10. National Slovak Society of the USA

    EIN 223330679 · Headquarters: Whitehall, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  11. National Slovak Society of the USA

    EIN 223330681 · Headquarters: Whitehall, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  12. National Slovak Society of the USA

    EIN 223330682 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. National Slovak Society of the USA

    EIN 237444970 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  14. National Slovak Society of the USA

    EIN 237501018 · Headquarters: Sunland, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  15. National Slovak Society of the USA

    EIN 237501020 · Headquarters: Colorado Springs, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  16. National Slovak Society of the USA

    EIN 237501034 · Headquarters: Dothan, AL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  17. National Slovak Society of the USA

    EIN 237501046 · Headquarters: Oak Forest, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  18. National Slovak Society of the USA

    EIN 237501067 · Headquarters: Seelyville, IN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  19. National Slovak Society of the USA

    EIN 237501074 · Headquarters: Royal Oak, MI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  20. National Slovak Society of the USA

    EIN 237501109 · Headquarters: Tarrytown, NY, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  21. National Slovak Society of the USA

    EIN 237501127 · Headquarters: Moxahala, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  22. National Slovak Society of the USA

    EIN 237501132 · Headquarters: Parm, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  23. National Slovak Society of the USA

    EIN 237501137 · Headquarters: Brooklyn, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  24. National Slovak Society of the USA

    EIN 237501142 · Headquarters: Lorain, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  25. National Slovak Society of the USA

    EIN 237501148 · Headquarters: Fairview Park, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  26. National Slovak Society of the USA

    EIN 237501161 · Headquarters: Lowellville, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  27. National Slovak Society of the USA

    EIN 237501173 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. National Slovak Society of the USA

    EIN 237501179 · Headquarters: Spraggs, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  29. National Slovak Society of the USA

    EIN 237501180 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  30. National Slovak Society of the USA

    EIN 237501198 · Headquarters: Smithmill, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  31. National Slovak Society of the USA

    EIN 237501222 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  32. National Slovak Society of the USA

    EIN 237501225 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  33. National Slovak Society of the USA

    EIN 237501243 · Headquarters: Dubois, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  34. National Slovak Society of the USA

    EIN 237501248 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  35. National Slovak Society of the USA

    EIN 237501268 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  36. National Slovak Society of the USA

    EIN 237501309 · Headquarters: Larksville, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  37. National Slovak Society of the USA

    EIN 237616197 · Headquarters: Lake View, NY, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  38. National Slovak Society of the USA

    EIN 237616222 · Headquarters: Northampton, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  39. National Slovak Society of the USA

    EIN 251427282 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  40. National Slovak Society of the USA

    EIN 251750692 · Headquarters: Clarence, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  41. National Slovak Society of the USA

    EIN 770666580 · Headquarters: Strongsville, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  42. National Slovak Society of the USA

    EIN 770666581 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  43. National Slovak Society of the USA

    EIN 830494299 · Headquarters: Port Charolette, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  44. National Slovak Society of the USA

    EIN 900247572 · Headquarters: Old Forge, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  45. National Slovak Society of the USA

    EIN 900247573 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  46. National Slovak Society of the USA

    EIN 931227191 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  47. National Small Business United

    EIN 530233266 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  48. National Smokejumper Association

    EIN 810479209 · Headquarters: Missoula, MT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  49. National Smooth Dancers

    EIN 330016271 · Headquarters: Poway, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  50. National Smooth Dancers

    EIN 330415670 · Headquarters: San Diego, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  51. National Smooth Dancers

    EIN 770091870 · Headquarters: Bakersfield, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  52. National Smooth Dancers

    EIN 770091871 · Headquarters: Clovis, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  53. National Smooth Dancers

    EIN 956097310 · Headquarters: Fremont, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  54. National Snaffle Bit Association Inc

    EIN 581571998 · Headquarters: Weatherford, TX, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  55. National Soceity of the Children of the American Revolution

    EIN 237248847 · Headquarters: Sauk Village, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  56. National Social Anxiety Center

    EIN 472818271 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  57. National Social Science Honor Society Pi Gamma Mu

    EIN 480547708 · Headquarters: WINFIELD, KS, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  58. National Socialist Movement Corporation

    EIN 842287784 · Headquarters: KISSIMMEE, FL, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  59. National Society Children of the American Revolution

    EIN 464874427 · Headquarters: Tigard, OR, US · Unknown & Unclassified · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  60. National Society Children of the American Revolution

    EIN 824992703 · Headquarters: Duluth, GA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  61. National Society Children of the American Revolution

    EIN 830889762 · Headquarters: Olathe, KS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  62. National Society Children of the American Revolution

    EIN 831223846 · Headquarters: Duluth, GA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  63. National Society Children of the American Revolution

    EIN 832448991 · Headquarters: Asheville, NC, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  64. National Society Children of the American Revolution

    EIN 832735552 · Headquarters: Winston Salem, NC, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  65. National Society Children of the American Revolution

    EIN 832746538 · Headquarters: Winston Salem, NC, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  66. National Society Children of the American Revolution

    EIN 842863036 · Headquarters: Duluth, GA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  67. National Society Children of the American Revolution

    EIN 843530815 · Headquarters: Sebastian, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  68. National Society Children of the American Revolution

    EIN 934480253 · Headquarters: SEBASTIAN, FL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  69. National Society Children of the American Revolution

    EIN 992129373 · Headquarters: Old fort, TN, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  70. National Society Children of the American Revolution Prairie Dog

    EIN 800180353 · Headquarters: Olathe, KS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. National Society Children of the American Revolution San Pasqual So

    EIN 991664025 · Headquarters: Pasadena, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  72. National Society Colonel Dames Xvii Century

    EIN 237135613 · Headquarters: Jackson, MS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  73. National Society Colonel Dames Xvii Century

    EIN 237168469 · Headquarters: Seneca, SC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  74. National Society Colonel Dames Xvii Century

    EIN 371361427 · Headquarters: DOWNERS GROVE, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  75. National Society Colonel Dames Xvii Century

    EIN 383262119 · Headquarters: Big Rapids, MI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  76. National Society Colonel Dames Xvii Century

    EIN 541801580 · Headquarters: Kenbridge, VA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  77. National Society Colonel Dames Xvii Century

    EIN 561950830 · Headquarters: Charlotte, NC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  78. National Society Colonel Dames Xvii Century

    EIN 570670469 · Headquarters: Greer, SC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  79. National Society Colonel Dames Xvii Century

    EIN 576028101 · Headquarters: Florence, SC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  80. National Society Colonel Dames Xvii Century

    EIN 592979079 · Headquarters: Vero Beach, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  81. National Society Colonel Dames Xvii Century

    EIN 596209827 · Headquarters: TALLAHASSEE, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  82. National Society Colonel Dames Xvii Century

    EIN 596209829 · Headquarters: Lynn Haven, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  83. National Society Colonel Dames Xvii Century

    EIN 596209977 · Headquarters: Coral Gables, FL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  84. National Society Colonel Dames Xvii Century

    EIN 621629871 · Headquarters: GATLINBURG, TN, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  85. National Society Colonel Dames Xvii Century

    EIN 626079349 · Headquarters: Hixson, TN, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  86. National Society Colonel Dames Xvii Century

    EIN 646037681 · Headquarters: Meridian, MS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  87. National Society Colonel Dames Xvii Century

    EIN 646037683 · Headquarters: Jackson, MS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  88. National Society Colonel Dames Xvii Century

    EIN 716066098 · Headquarters: Royal, AR, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  89. National Society Colonel Dames Xvii Century

    EIN 721116408 · Headquarters: Shreveport, LA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  90. National Society Colonel Dames Xvii Century

    EIN 726027687 · Headquarters: NEW ORLEANS, LA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  91. National Society Colonel Dames Xvii Century

    EIN 736118993 · Headquarters: Claremore, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  92. National Society Colonel Dames Xvii Century

    EIN 736118994 · Headquarters: Enid, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  93. National Society Colonial Dames 17Th Century

    EIN 202626614 · Headquarters: Dunnellon, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  94. National Society Colonial Dames 17Th Century

    EIN 884041704 · Headquarters: Camden, SC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  95. National Society Colonial Dames of the Seventeenth Century

    EIN 582592939 · Headquarters: Marietta, GA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  96. National Society Colonial Dames Vxii Century

    EIN 566060961 · Headquarters: Asheville, NC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  97. National Society Colonial Dames Xv11 Century

    EIN 208927848 · Headquarters: Hilton Head Island, SC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  98. National Society Colonial Dames Xvii

    EIN 946104610 · Headquarters: Saratoga, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  99. National Society Colonial Dames Xvii Century

    EIN 020349938 · Headquarters: Candia, NH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  100. National Society Colonial Dames Xvii Century

    EIN 042888062 · Headquarters: Norwell, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

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