Unknown & Unclassified nonprofits in South Dakota

Unknown & Unclassified nonprofits in South Dakota. Browse 2,816 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 Legion

    EIN 466015376 · Headquarters: TYNDALL, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  2. American Legion

    EIN 466015443 · Headquarters: Custer, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  3. American Legion

    EIN 466015469 · Headquarters: Clark, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  4. American Legion

    EIN 466016080 · Headquarters: Plankinton, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  5. American Legion

    EIN 466016082 · Headquarters: Springfield, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  6. American Legion

    EIN 466016237 · Headquarters: BELLE FOURCHE, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  7. American Legion

    EIN 466017976 · Headquarters: Madison, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. American Legion

    EIN 466019618 · Headquarters: Bradley, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  9. American Legion

    EIN 466019620 · Headquarters: Canova, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  10. American Legion

    EIN 466019626 · Headquarters: Iroquois, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  11. American Legion

    EIN 466019640 · Headquarters: VOLGA, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  12. American Legion

    EIN 466019641 · Headquarters: WENTWORTH, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. American Legion

    EIN 466020077 · Headquarters: Letcher, SD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  14. American Legion

    EIN 710873971 · Headquarters: WATERTOWN, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  15. American Legion

    EIN 851394907 · Headquarters: SIOUX fALLS, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  16. American Legion 0258

    EIN 466012756 · Headquarters: ANDOVER, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  17. American Legion 180 Read-veflin

    EIN 466014642 · Headquarters: New Effington, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  18. American Legion 229 Gertje Vanlith

    EIN 460322497 · Headquarters: BIG STONE CITY, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  19. American Legion 50 Otto-quande-renville

    EIN 460218663 · Headquarters: SISSETON, SD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  20. American Legion Auxiliary

    EIN 113832821 · Headquarters: WHITE LAKE, SD, US · Unknown & Unclassified · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  21. American Legion Auxiliary

    EIN 237024207 · Headquarters: Howard, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  22. American Legion Auxiliary

    EIN 237092995 · Headquarters: HERMOSA, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  23. American Legion Auxiliary

    EIN 237118179 · Headquarters: Gary, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  24. American Legion Auxiliary

    EIN 300533330 · Headquarters: BRENTFORD, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  25. American Legion Auxiliary

    EIN 460105102 · Headquarters: MITCHELL, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  26. American Legion Auxiliary

    EIN 460277543 · Headquarters: ROSCOE, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  27. American Legion Auxiliary

    EIN 460278037 · Headquarters: Sioux Falls, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. American Legion Auxiliary

    EIN 460311924 · Headquarters: WINNER, SD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  29. American Legion Auxiliary

    EIN 460324156 · Headquarters: Winner, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  30. American Legion Auxiliary

    EIN 460357189 · Headquarters: Canton, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  31. American Legion Auxiliary

    EIN 460357347 · Headquarters: Chancellor, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  32. American Legion Auxiliary

    EIN 460372951 · Headquarters: Kennebec, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  33. American Legion Auxiliary

    EIN 460373135 · Headquarters: Groton, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  34. American Legion Auxiliary

    EIN 460373243 · Headquarters: Faulkton, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  35. American Legion Auxiliary

    EIN 460374405 · Headquarters: Mount Vernon, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  36. American Legion Auxiliary

    EIN 460382904 · Headquarters: Hurley, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  37. American Legion Auxiliary

    EIN 460396811 · Headquarters: Emery, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  38. American Legion Auxiliary

    EIN 460407770 · Headquarters: VIVIAN, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  39. American Legion Auxiliary

    EIN 460425927 · Headquarters: Gann Valley, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  40. American Legion Auxiliary

    EIN 460444851 · Headquarters: Wilmot, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  41. American Legion Auxiliary

    EIN 466012064 · Headquarters: Aberdeen, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  42. American Legion Auxiliary

    EIN 466013065 · Headquarters: GETTYSBURG, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  43. American Legion Auxiliary

    EIN 466013109 · Headquarters: WATERTOWN, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  44. American Legion Auxiliary

    EIN 466013417 · Headquarters: Yankton, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  45. American Legion Auxiliary

    EIN 466013516 · Headquarters: Clark, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  46. American Legion Auxiliary

    EIN 466013545 · Headquarters: Volin, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  47. American Legion Auxiliary

    EIN 466013549 · Headquarters: Parkston, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  48. American Legion Auxiliary

    EIN 466014054 · Headquarters: Trent, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  49. American Legion Auxiliary

    EIN 466014607 · Headquarters: BALTIC, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  50. American Legion Auxiliary

    EIN 466014610 · Headquarters: Bradley, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  51. American Legion Auxiliary

    EIN 466014619 · Headquarters: CONDE, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  52. American Legion Auxiliary

    EIN 466014622 · Headquarters: Dell Rapids, SD, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  53. American Legion Auxiliary

    EIN 466014625 · Headquarters: DOLAND, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  54. American Legion Auxiliary

    EIN 466014633 · Headquarters: Elkton, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  55. American Legion Auxiliary

    EIN 466014635 · Headquarters: New Effington, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  56. American Legion Auxiliary

    EIN 466014641 · Headquarters: Geddes, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  57. American Legion Auxiliary

    EIN 466014643 · Headquarters: Grenville, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  58. American Legion Auxiliary

    EIN 466014651 · Headquarters: Hoven, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  59. American Legion Auxiliary

    EIN 466014655 · Headquarters: Isabel, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  60. American Legion Auxiliary

    EIN 466014662 · Headquarters: Langford, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  61. American Legion Auxiliary

    EIN 466014665 · Headquarters: Lemmon, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  62. American Legion Auxiliary

    EIN 466014671 · Headquarters: MENNO, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  63. American Legion Auxiliary

    EIN 466014672 · Headquarters: St Lawrence, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  64. American Legion Auxiliary

    EIN 466014673 · Headquarters: Mitchell, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  65. American Legion Auxiliary

    EIN 466014683 · Headquarters: Platte, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  66. American Legion Auxiliary

    EIN 466014689 · Headquarters: Rosholt, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  67. American Legion Auxiliary

    EIN 466014708 · Headquarters: Tripp, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  68. American Legion Auxiliary

    EIN 466014709 · Headquarters: VALLEY SPRINGS, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  69. American Legion Auxiliary

    EIN 466014714 · Headquarters: WAKONDA, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  70. American Legion Auxiliary

    EIN 466014716 · Headquarters: Warner, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. American Legion Auxiliary

    EIN 466014718 · Headquarters: WESSINGTON SPRINGS, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  72. American Legion Auxiliary

    EIN 466014719 · Headquarters: White, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  73. American Legion Auxiliary

    EIN 466014720 · Headquarters: WHITE LAKE, SD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  74. American Legion Auxiliary

    EIN 466014815 · Headquarters: Aurora, SD, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  75. American Legion Auxiliary

    EIN 466014825 · Headquarters: Aberdeen, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  76. American Legion Auxiliary

    EIN 466014828 · Headquarters: Draper, SD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  77. American Legion Auxiliary

    EIN 466014831 · Headquarters: ERWIN, SD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  78. American Legion Auxiliary

    EIN 466014832 · Headquarters: Brookings, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  79. American Legion Auxiliary

    EIN 466014845 · Headquarters: Mellette, SD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  80. American Legion Auxiliary

    EIN 466014852 · Headquarters: Milbank, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  81. American Legion Auxiliary

    EIN 466014856 · Headquarters: SISSETON, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  82. American Legion Auxiliary

    EIN 466014859 · Headquarters: TIMBER LAKE, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  83. American Legion Auxiliary

    EIN 466014861 · Headquarters: Vermillion SD, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  84. American Legion Auxiliary

    EIN 466014863 · Headquarters: HURON, SD, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  85. American Legion Auxiliary

    EIN 466014864 · Headquarters: ARMOUR, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  86. American Legion Auxiliary

    EIN 466014866 · Headquarters: White River, SD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  87. American Legion Auxiliary

    EIN 466015085 · Headquarters: WATAUGA, SD, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  88. American Legion Auxiliary

    EIN 466015086 · Headquarters: midland, SD, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  89. American Legion Auxiliary

    EIN 466015092 · Headquarters: Tabor, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  90. American Legion Auxiliary

    EIN 466015093 · Headquarters: De Smet, SD, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  91. American Legion Auxiliary

    EIN 466015094 · Headquarters: Mobridge, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  92. American Legion Auxiliary

    EIN 466015095 · Headquarters: Bryant, SD, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  93. American Legion Auxiliary

    EIN 466015098 · Headquarters: Salem, SD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  94. American Legion Auxiliary

    EIN 466015103 · Headquarters: Dupree, SD, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  95. American Legion Auxiliary

    EIN 466015104 · Headquarters: Tulare, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  96. American Legion Auxiliary

    EIN 466015105 · Headquarters: Wolsey, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  97. American Legion Auxiliary

    EIN 466015107 · Headquarters: Highmore, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  98. American Legion Auxiliary

    EIN 466015109 · Headquarters: Aberdeen, SD, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  99. American Legion Auxiliary

    EIN 466015199 · Headquarters: Avon, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  100. American Legion Auxiliary

    EIN 466015200 · Headquarters: Badger, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

First page and all pages