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. Hugh Obrian Youth Leadership

    EIN 200708299 · Headquarters: Sioux Falls, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  2. Human Service Agency Foundation

    EIN 363287529 · Headquarters: WATERTOWN, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  3. Humboldt Farm Mutual Insurance Company of South Dakota

    EIN 460133650 · Headquarters: CANTON, SD, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990

  4. Humboldt Threshing Inc

    EIN 884022084 · Headquarters: HUMBOLDT, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  5. Huntingtons Disease Society of America Inc

    EIN 222942586 · Headquarters: Sioux Falls, SD, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  6. Hurley Cruise Night

    EIN 871630500 · Headquarters: Hurley, SD, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  7. Hurley Historical Society

    EIN 460384463 · Headquarters: HURLEY, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. Huron Area Arts Council

    EIN 460353666 · Headquarters: HURON, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  9. Huron Chamber & Visitors Bureau

    EIN 460149050 · Headquarters: HURON, SD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  10. Huron Chapter South Dakota Electrical Council

    EIN 743033839 · Headquarters: HURON, SD, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  11. Huron Country Club

    EIN 460149095 · Headquarters: HURON, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  12. Huron Little League Inc

    EIN 460336397 · Headquarters: HURON, SD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  13. Hutterian Safety & Farm Equipment Educat

    EIN 393383860 · Headquarters: MITCHELL, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  14. Hyde Co Senior Citizens Inc

    EIN 510139192 · Headquarters: HIGHMORE, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  15. Hyde County Action Inc

    EIN 460349648 · Headquarters: Highmore, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  16. I-29 Diary Youth Extravaganza

    EIN 334989402 · Headquarters: Milbank, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  17. Ibew 1250-Building Corporation

    EIN 460350301 · Headquarters: Rapid City, SD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  18. Illusions Fastpitch Softball

    EIN 841906930 · Headquarters: Sioux Falls, SD, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  19. Independent Community Bankers of Sd

    EIN 460396671 · Headquarters: WATERTOWN, SD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  20. Independent Dakota Educators Alliance

    EIN 333035552 · Headquarters: Sioux Falls, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  21. Independent Electrical Contractors Dakotas Inc

    EIN 460311869 · Headquarters: SIOUX FALLS, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  22. Independent Insurance Agents of South Dakota

    EIN 466013413 · Headquarters: FT PIERRE, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  23. Independent Living Choices

    EIN 460380428 · Headquarters: SIOUX FALLS, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  24. Independent Order of Odd Fellows

    EIN 237597058 · Headquarters: Elk Point, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  25. Independent Order of Odd Fellows

    EIN 237597143 · Headquarters: GREGORY, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  26. Independent Order of Odd Fellows James River Lodge No 32

    EIN 460149900 · Headquarters: HURON, SD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  27. Indigo Bridge

    EIN 461257572 · Headquarters: Rosebud, SD, US · Unknown & Unclassified · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  28. Industrial Development Corporation of Eden

    EIN 460412022 · Headquarters: Eden, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  29. Initiative for Equality

    EIN 452686115 · Headquarters: Rapid City, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  30. Institute of Internal Auditors

    EIN 460371245 · Headquarters: Sioux Falls, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  31. Interior Volunteer Fire Dept

    EIN 460364926 · Headquarters: INTERIOR, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  32. International Alliance of Theatrical Stage Employees Loc 220

    EIN 466014980 · Headquarters: SIOUX FALLS, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  33. International Alliance Theatrical Stage Employee & Moving Picture

    EIN 460347288 · Headquarters: Rapid City, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  34. International Assoc of Lions - Spearfish

    EIN 466015313 · Headquarters: SPEARFISH, SD, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  35. International Association of Electrical Inspectors

    EIN 460365314 · Headquarters: Harrisburg, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  36. International Association of Fire Fighters

    EIN 466016087 · Headquarters: Aberdeen, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  37. International Association of Firefighters Local #814

    EIN 460321558 · Headquarters: SIOUX FALLS, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  38. International Association of Lions

    EIN 466016152 · Headquarters: CHAMBERLAIN, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  39. International Association of Lions Club

    EIN 460366201 · Headquarters: Eureka, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  40. International Association of Lions Club

    EIN 460391020 · Headquarters: Corsica, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  41. International Association of Lions Club

    EIN 466015382 · Headquarters: Beresford, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  42. International Association of Lions Clubs

    EIN 010910609 · Headquarters: Deadwood, SD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  43. International Association of Lions Clubs

    EIN 201490382 · Headquarters: Hurley, SD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  44. International Association of Lions Clubs

    EIN 208985361 · Headquarters: Madison, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  45. International Association of Lions Clubs

    EIN 237031824 · Headquarters: White River, SD, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  46. International Association of Lions Clubs

    EIN 237052004 · Headquarters: Presho, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  47. International Association of Lions Clubs

    EIN 237227471 · Headquarters: Elk Point, SD, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  48. International Association of Lions Clubs

    EIN 237450112 · Headquarters: Miller, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  49. International Association of Lions Clubs

    EIN 460342604 · Headquarters: Brookings, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  50. International Association of Lions Clubs

    EIN 460342814 · Headquarters: Clark, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  51. International Association of Lions Clubs

    EIN 460349068 · Headquarters: Newell, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  52. International Association of Lions Clubs

    EIN 460349092 · Headquarters: Lennox, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  53. International Association of Lions Clubs

    EIN 460359639 · Headquarters: REDFIELD, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  54. International Association of Lions Clubs

    EIN 460369204 · Headquarters: Parker, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  55. International Association of Lions Clubs

    EIN 460370406 · Headquarters: Armour, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  56. International Association of Lions Clubs

    EIN 460370788 · Headquarters: Onida, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  57. International Association of Lions Clubs

    EIN 460372248 · Headquarters: MITCHELL, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  58. International Association of Lions Clubs

    EIN 460378185 · Headquarters: Warner, SD, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  59. International Association of Lions Clubs

    EIN 460382167 · Headquarters: Murdo, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  60. International Association of Lions Clubs

    EIN 460397836 · Headquarters: McLaughlin, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  61. International Association of Lions Clubs

    EIN 460399226 · Headquarters: Eden, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  62. International Association of Lions Clubs

    EIN 460421003 · Headquarters: Black Hawk, SD, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  63. International Association of Lions Clubs

    EIN 460421075 · Headquarters: Colton, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  64. International Association of Lions Clubs

    EIN 460442325 · Headquarters: Sioux Falls, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  65. International Association of Lions Clubs

    EIN 466007530 · Headquarters: Pierre, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  66. International Association of Lions Clubs

    EIN 466008095 · Headquarters: CUSTER, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  67. International Association of Lions Clubs

    EIN 466012659 · Headquarters: Britton, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  68. International Association of Lions Clubs

    EIN 466013013 · Headquarters: Belle Fourche, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  69. International Association of Lions Clubs

    EIN 466013347 · Headquarters: Huron, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  70. International Association of Lions Clubs

    EIN 466014307 · Headquarters: Brookings, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. International Association of Lions Clubs

    EIN 466014927 · Headquarters: Redfield, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  72. International Association of Lions Clubs

    EIN 466014928 · Headquarters: Rapid City, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  73. International Association of Lions Clubs

    EIN 466015054 · Headquarters: PARKSTON, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  74. International Association of Lions Clubs

    EIN 466015055 · Headquarters: Vermillion, SD, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  75. International Association of Lions Clubs

    EIN 466015216 · Headquarters: Dell Rapids, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  76. International Association of Lions Clubs

    EIN 466016089 · Headquarters: Alcester, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  77. International Association of Lions Clubs

    EIN 466016151 · Headquarters: New Underwood, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  78. International Association of Lions Clubs

    EIN 466016242 · Headquarters: Brandon, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  79. International Association of Lions Clubs

    EIN 466016457 · Headquarters: Freeman, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  80. International Association of Lions Clubs

    EIN 466017310 · Headquarters: Buffalo, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  81. International Association of Lions Clubs

    EIN 466017313 · Headquarters: LEMMON, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  82. International Association of Lions Clubs

    EIN 466017320 · Headquarters: Yankton, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  83. International Association of Lions Clubs

    EIN 475170634 · Headquarters: MOBRIDGE, SD, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  84. International Association of Lions Clubs

    EIN 814292974 · Headquarters: Rapid City, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  85. International Association of Lions Clubs

    EIN 852956351 · Headquarters: Aberdeen, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  86. International Association of Lions Clubs

    EIN 854085453 · Headquarters: HILL CITY, SD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  87. International Association of Machinists & Aerospace Workers

    EIN 466015253 · Headquarters: ABERDEEN, SD, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  88. International Brotherhood of Electrical Workers

    EIN 460225587 · Headquarters: RAPID CITY, SD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  89. International Brotherhood of Electrical Workers

    EIN 460348064 · Headquarters: Westport, SD, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  90. International Brotherhood of Electrical Workers

    EIN 466014906 · Headquarters: Mitchell, SD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  91. International Brotherhood of Electrical Workers

    EIN 466014908 · Headquarters: spearfish, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  92. International Brotherhood of Electrical Workers Lo

    EIN 466014903 · Headquarters: WATERTOWN, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  93. International Society for Philosophical Enquiry

    EIN 990216933 · Headquarters: PIEDMONT, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  94. International Society for the Protection of Mustangs and Burros

    EIN 946169422 · Headquarters: RAPID CITY, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  95. Ipswich Community Development Corporation

    EIN 237235052 · Headquarters: Ipswich, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  96. Ipswich Senior Citizens Club Inc

    EIN 363591118 · Headquarters: IPSWICH, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  97. Irene Community Service Groups Inc

    EIN 460432588 · Headquarters: IRENE, SD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  98. Irene Wakonda Parent Teacher Organization

    EIN 800533561 · Headquarters: Vermillion, SD, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  99. Islamic Society of Brookings

    EIN 311281991 · Headquarters: Brookings, SD, US · Unknown & Unclassified · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  100. Izaak Walton League - Sunshine Chapter

    EIN 460211864 · Headquarters: PIERRE, SD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

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