Nonprofits in South Dakota

Nonprofits in South Dakota. Browse 9,038 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 Auxiliary

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

  2. American Legion Auxiliary

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

  3. American Legion Auxiliary

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

  4. American Legion Auxiliary

    EIN 466015008 · Headquarters: Estelline, SD, US · Public & Societal Benefit · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  5. American Legion Auxiliary

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

  6. American Legion Auxiliary

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

  7. American Legion Auxiliary

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

  8. American Legion Auxiliary

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

  9. American Legion Auxiliary

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

  10. American Legion Auxiliary

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

  11. American Legion Auxiliary

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

  12. American Legion Auxiliary

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

  13. American Legion Auxiliary

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

  14. American Legion Auxiliary

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

  15. American Legion Auxiliary

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

  16. American Legion Auxiliary

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

  17. American Legion Auxiliary

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

  18. American Legion Auxiliary

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

  19. American Legion Auxiliary

    EIN 466015203 · Headquarters: GREGORY, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  20. American Legion Auxiliary

    EIN 466015204 · Headquarters: Oldham, SD, US · Public & Societal Benefit · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  21. American Legion Auxiliary

    EIN 466015206 · Headquarters: Tyndall, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  22. American Legion Auxiliary

    EIN 466015231 · Headquarters: Alpena, SD, US · Public & Societal Benefit · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  23. American Legion Auxiliary

    EIN 466015232 · Headquarters: Belle Fourche, SD, US · Public & Societal Benefit · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  24. American Legion Auxiliary

    EIN 466015234 · Headquarters: Pierre m, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  25. American Legion Auxiliary

    EIN 466015279 · Headquarters: Corsica, SD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  26. American Legion Auxiliary

    EIN 466015282 · Headquarters: Huron, SD, US · Public & Societal Benefit · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  27. American Legion Auxiliary

    EIN 466015283 · Headquarters: Centerville, SD, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  28. American Legion Auxiliary

    EIN 466015284 · Headquarters: Chester, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  29. American Legion Auxiliary

    EIN 466015286 · Headquarters: colman, SD, US · Public & Societal Benefit · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  30. American Legion Auxiliary

    EIN 466015287 · Headquarters: Frederick, SD, US · Public & Societal Benefit · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  31. American Legion Auxiliary

    EIN 466015288 · Headquarters: GAYVILLE, SD, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  32. American Legion Auxiliary

    EIN 466015289 · Headquarters: HUDSON, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  33. American Legion Auxiliary

    EIN 466015295 · Headquarters: Britton, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  34. American Legion Auxiliary

    EIN 466015345 · Headquarters: Eureka, SD, US · Public & Societal Benefit · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  35. American Legion Auxiliary

    EIN 466015350 · Headquarters: NUNDA, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  36. American Legion Auxiliary

    EIN 466015351 · Headquarters: Onaka, SD, US · Public & Societal Benefit · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  37. American Legion Auxiliary

    EIN 466015365 · Headquarters: Dallas, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  38. American Legion Auxiliary

    EIN 466015366 · Headquarters: DAVIS, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  39. American Legion Auxiliary

    EIN 466015369 · Headquarters: Sioux Falls, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  40. American Legion Auxiliary

    EIN 466015371 · Headquarters: Hosmer, SD, US · Public & Societal Benefit · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  41. American Legion Auxiliary

    EIN 466015372 · Headquarters: Letcher, SD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  42. American Legion Auxiliary

    EIN 466015446 · Headquarters: Iroquois, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  43. American Legion Auxiliary

    EIN 466015448 · Headquarters: Martin, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  44. American Legion Auxiliary

    EIN 466015450 · Headquarters: Volga, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  45. American Legion Auxiliary

    EIN 466015491 · Headquarters: Hayti, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  46. American Legion Auxiliary

    EIN 466015492 · Headquarters: Waubay, SD, US · Public & Societal Benefit · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  47. American Legion Auxiliary

    EIN 466015496 · Headquarters: Raymond, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  48. American Legion Auxiliary

    EIN 466015619 · Headquarters: Lesterville, SD, US · Public & Societal Benefit · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  49. American Legion Auxiliary

    EIN 466015621 · Headquarters: Montrose, SD, US · Public & Societal Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  50. American Legion Auxiliary

    EIN 466015622 · Headquarters: Pierpont, SD, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  51. American Legion Auxiliary

    EIN 466015624 · Headquarters: White Lake, SD, US · Public & Societal Benefit · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  52. American Legion Auxiliary

    EIN 466015625 · Headquarters: Onida, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  53. American Legion Auxiliary

    EIN 466015663 · Headquarters: Stratford, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  54. American Legion Auxiliary

    EIN 466015711 · Headquarters: Worthing, SD, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  55. American Legion Auxiliary

    EIN 466015794 · Headquarters: Woonsocket, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  56. American Legion Auxiliary

    EIN 466016099 · Headquarters: Astoria, SD, US · Public & Societal Benefit · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  57. American Legion Auxiliary

    EIN 466040771 · Headquarters: CLEAR LAKE, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  58. American Legion Auxiliary

    EIN 473683466 · Headquarters: CHAMBERLAIN, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  59. American Legion Auxiliary

    EIN 510169259 · Headquarters: Lennox, SD, US · Public & Societal Benefit · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  60. American Legion Auxiliary

    EIN 510177468 · Headquarters: HERRICK, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  61. American Legion Auxiliary

    EIN 800026982 · Headquarters: Rapid City, SD, US · Public & Societal Benefit · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  62. American Legion Auxiliary

    EIN 831633081 · Headquarters: Webster, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  63. American Legion Auxiliary

    EIN 862398550 · Headquarters: SIOUX FALLS, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  64. American Legion Auxiliary

    EIN 900614261 · Headquarters: Langford, SD, US · Public & Societal Benefit · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  65. American Legion Auxiliary

    EIN 900876122 · Headquarters: Brookings, SD, US · Public & Societal Benefit · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  66. American Legion Auxiliary

    EIN 911790468 · Headquarters: Kimball, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  67. American Legion Auxiliary

    EIN 931770670 · Headquarters: Fairfax, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  68. American Legion Auxiliary 213 Hunt Newell

    EIN 800174017 · Headquarters: wecota, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  69. American Legion Auxiliary 27 Jackson County Local

    EIN 466014657 · Headquarters: Kadoka, SD, US · Public & Societal Benefit · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  70. American Legion Auxiliary 311 Piedm Ont Valley

    EIN 800391670 · Headquarters: PIEDMONT, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. American Legion Auxiliary 42 Edgar L Herrick

    EIN 466014603 · Headquarters: Arlington, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  72. American Legion Auxiliary Dwight Wood Unit No 132

    EIN 510676377 · Headquarters: Springfield, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  73. American Legion Auxiliary Frederick C Shroeder Post 97

    EIN 811780970 · Headquarters: FLANDREAU, SD, US · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  74. American Legion Auxiliary of Britton Unit 80

    EIN 466014844 · Headquarters: BRITTON, SD, US · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  75. American Legion Auxiliary of Lamnison Post 147 Dept of Sd

    EIN 460355959 · Headquarters: Buffalo, SD, US · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  76. American Legion Auxiliary Post 110 Watson Krauter

    EIN 466014865 · Headquarters: WESSINGTON, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  77. American Legion Auxiliary Post 318

    EIN 421762936 · Headquarters: BRANDON, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  78. American Legion Auxiliary Sidney Lovejoy Unit No 256 Dept of Sd

    EIN 466014846 · Headquarters: New Underwood, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  79. American Legion Auxiliary Unit 46

    EIN 992384169 · Headquarters: CUSTER, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  80. American Legion Auxiliary Unt 153 Carpenter Sd

    EIN 300847900 · Headquarters: Carpenter, SD, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  81. American Legion Auxillary

    EIN 611591662 · Headquarters: AGAR, SD, US · Public & Societal Benefit · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  82. American Legion Battle Mountain Post 71

    EIN 460217607 · Headquarters: HOT SPRINGS, SD, USA · Public & Societal Benefit · Latest available filing year: 2018 · Primary form: IRS Form 990

  83. American Legion Bc Post No 240

    EIN 460220488 · Headquarters: MARTIN, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  84. American Legion Boys State

    EIN 466015039 · Headquarters: Rapid City, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  85. American Legion Brattvet Green Post 66

    EIN 460231186 · Headquarters: LEMMON, SD, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990

  86. American Legion Cowen-nilson Post 86

    EIN 415249516 · Headquarters: Alcester, SD, US · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  87. American Legion Frank J Brune Post1 40

    EIN 414936825 · Headquarters: Salem, SD, US · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  88. American Legion Greer Post No11

    EIN 466019674 · Headquarters: WAGNER, SD, USA · Public & Societal Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  89. American Legion Heasley Post

    EIN 466017631 · Headquarters: Miller, SD, US · Public & Societal Benefit · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  90. American Legion Henning-Shemanski 267

    EIN 466006816 · Headquarters: Grenville, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  91. American Legion Hutchison Post 6

    EIN 460222394 · Headquarters: GREGORY, SD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  92. American Legion Jackson Hall Post 47

    EIN 333258971 · Headquarters: Artesain, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  93. American Legion Kennebec-reliance Sd

    EIN 466016079 · Headquarters: Kennebec, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  94. American Legion Newman Millage Post 201

    EIN 466019628 · Headquarters: PUKWANA, SD, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  95. American Legion Post

    EIN 466014660 · Headquarters: Lake Preston, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  96. American Legion Post #18

    EIN 460211748 · Headquarters: MITCHELL, SD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  97. American Legion Post #8

    EIN 466008690 · Headquarters: PIERRE, SD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  98. American Legion Post 0092 Clay-kaiser

    EIN 460276898 · Headquarters: REDFIELD, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  99. American Legion Post 0206 Henry T Berdahl

    EIN 466014821 · Headquarters: Colton, SD, US · Public & Societal Benefit · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  100. American Legion Post 0233 Emil Gurwell

    EIN 466019633 · Headquarters: Nisland, SD, US · Public & Societal Benefit · Latest available filing year: 2010 · Primary form: IRS Form 990-N

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