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. W N P Development Corporation

    EIN 460436434 · Headquarters: wentworth, SD, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  2. Wakpamni District Community Development Corporation

    EIN 841809593 · Headquarters: Pine Ridge, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  3. Wall Badlands Chamber of Commerce

    EIN 830485604 · Headquarters: WALL, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  4. Wall Rodeo Booster Club

    EIN 460405063 · Headquarters: WALL, SD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  5. Wanagi Ska

    EIN 364696850 · Headquarters: PIERRE, SD, US · Unknown & Unclassified · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  6. War Cloud-lone Wolf Foundation Inc

    EIN 341640429 · Headquarters: Dupree, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  7. Washington Senior High School Booster Club

    EIN 237416991 · Headquarters: SIOUX FALLS, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  8. Watauga Coyote Hunt

    EIN 472633950 · Headquarters: Rapid City, SD, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  9. Watertown Area Chamber of Commerce

    EIN 460203350 · Headquarters: WATERTOWN, SD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  10. Watertown Area Memory Care & Aging

    EIN 363428764 · Headquarters: WATERTOWN, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  11. Watertown Area Swim Club

    EIN 460337969 · Headquarters: WATERTOWN, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  12. Watertown Artwalk Inc

    EIN 471914083 · Headquarters: WATERTOWN, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. Watertown Business and Professional Womens Club of Watertown South Dak

    EIN 466012571 · Headquarters: WATERTOWN, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  14. Watertown Christian School

    EIN 363809047 · Headquarters: WATERTOWN, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  15. Watertown Development Company

    EIN 466012194 · Headquarters: WATERTOWN, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  16. Watertown Elks 838 Charity Foundation

    EIN 460373337 · Headquarters: Watertown, SD, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  17. Watertown Hockey Association Inc

    EIN 510138200 · Headquarters: WATERTOWN, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  18. Watertown Lions Club

    EIN 466015462 · Headquarters: Watertown, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  19. Watertown Mutual Plate Glass Insurance Co

    EIN 466011958 · Headquarters: WATERTOWN, SD, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  20. Watertown Second District Society

    EIN 471284388 · Headquarters: SIOUX FALLS, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  21. Waubay Housing Inc

    EIN 460342803 · Headquarters: WAUBAY, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  22. Web Water Development Association Inc

    EIN 460352027 · Headquarters: ABERDEEN, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  23. Webster Area Chamber of Commerce

    EIN 460284276 · Headquarters: WEBSTER, SD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  24. Webster Centennial Commitee Inc

    EIN 460356501 · Headquarters: WEBSTER, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  25. Webster Pta

    EIN 260084714 · Headquarters: Webster, SD, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  26. Welk Family Foundation

    EIN 363579562 · Headquarters: Aberdeen, SD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  27. Wellspring Wholistic Care Center

    EIN 460355479 · Headquarters: Freeman, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  28. Weskota Apartments

    EIN 460403490 · Headquarters: Wessington Springs, SD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  29. Wesley Acres Foundation

    EIN 363756874 · Headquarters: MITCHELL, SD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  30. Wesley Acres Inc

    EIN 466017601 · Headquarters: MITCHELL, SD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  31. Wesley United Methodist Church Foundation of Sioux Falls

    EIN 460413327 · Headquarters: Sioux Falls, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  32. Wessington Springs Senior Citizens Center

    EIN 460332634 · Headquarters: Wessington Springs, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  33. West Central Area Soccer Association

    EIN 471572793 · Headquarters: Hartford, SD, US · Unknown & Unclassified · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  34. West Central Athletic Booster Club

    EIN 460345608 · Headquarters: Hartford, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  35. West Central Electric Cooperative

    EIN 460225950 · Headquarters: MURDO, SD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  36. West Central Pta

    EIN 455464007 · Headquarters: Hartford, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  37. West River Democratic Socialists

    EIN 871538784 · Headquarters: Spearfish, SD, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  38. West River Electric Assn Inc

    EIN 460204517 · Headquarters: WALL, SD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  39. West River Estate Planning Council

    EIN 460375389 · Headquarters: RAPID CITY, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  40. West River Foundation

    EIN 363354458 · Headquarters: STURGIS, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  41. West River Lyman Jones Rural Water Systems

    EIN 460365836 · Headquarters: MURDO, SD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  42. West Sioux Ii 4-H Club of Brookings County

    EIN 611958227 · Headquarters: Volga, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  43. Westendorf Family Foundation C/o Neal W Westendorf

    EIN 426373031 · Headquarters: DAKOTA DUNES, SD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-PF

  44. Western Dakota

    EIN 883713666 · Headquarters: SIOUX FALLS, SD, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ

  45. Western Dakota Antique Club Inc

    EIN 461944768 · Headquarters: Sturgis, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  46. Western Dakota Vocational Technical Foundation Inc

    EIN 460340050 · Headquarters: RAPID CITY, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  47. Western Fraternal Life Association

    EIN 237540061 · Headquarters: Tabor, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  48. Western Heights Women of Today

    EIN 271662827 · Headquarters: Sioux Falls, SD, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  49. Western Hills Humane Society

    EIN 460381354 · Headquarters: Spearfish, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  50. Western South Dakota Council of Senior Centers

    EIN 464848075 · Headquarters: Spearfish, SD, US · Unknown & Unclassified · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  51. Western South Dakota Senior Services Inc

    EIN 460362991 · Headquarters: RAPID CITY, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  52. Westhills Village Foundation

    EIN 363634283 · Headquarters: RAPID CITY, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  53. Westport Community Club Inc

    EIN 460419035 · Headquarters: Westport, SD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  54. Westside Preschool and Daycare

    EIN 460316189 · Headquarters: RAPID CITY, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  55. Whetstone Valley Electric Cooperative

    EIN 460205275 · Headquarters: MILBANK, SD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  56. Whetstone Valley Snowmobile Association

    EIN 237076739 · Headquarters: MILBANK, SD, US · Unknown & Unclassified · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  57. Whiskey Educators

    EIN 394534229 · Headquarters: Sioux Falls, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  58. Whispering Pines Vol Fire Dept

    EIN 460385125 · Headquarters: RAPID CITY, SD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  59. Whispering Pines Water Association Inc

    EIN 466018194 · Headquarters: Rapid City, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  60. White Ambulance Service

    EIN 810634607 · Headquarters: White, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  61. White Lake Community Grand Fund Inc

    EIN 363679514 · Headquarters: MITCHELL, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  62. White Lake Little League Baseball

    EIN 300562506 · Headquarters: White Lake, SD, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  63. White River Frontier Arena

    EIN 990762822 · Headquarters: MURDO, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  64. Whitetail Bowmen Archery Club Inc

    EIN 466014506 · Headquarters: Aberdeen, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  65. Whitetails Unlimited Inc

    EIN 363460028 · Headquarters: Aberdeen, SD, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  66. Whitewood Chamber of Commerce Inc

    EIN 460319835 · Headquarters: WHITEWOOD, SD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  67. Wholeness Center

    EIN 460386981 · Headquarters: Flandreau, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  68. Wiconi Wawokiya Inc

    EIN 460354592 · Headquarters: Fort Thompson, SD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  69. Wild Bird Feeding Institute

    EIN 363345609 · Headquarters: BRITTON, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  70. Wildkats Baseball

    EIN 462081899 · Headquarters: White Lake, SD, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  71. Wildlife Protection Inc

    EIN 363291300 · Headquarters: Pierre, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  72. William & Ruth Cozard Educ Schol Trust

    EIN 466039141 · Headquarters: Mitchell, SD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  73. William Alexander&Lida Alice Beach Memorial Trust

    EIN 206926394 · Headquarters: Sioux Falls, SD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  74. William J Holland and Alyce I Holland Foundation

    EIN 460381838 · Headquarters: SISSETON, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  75. Willow Lake Volunteer Fire Department Inc

    EIN 921832722 · Headquarters: Willow Lake, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  76. Wilson Wildcats 4-H Club of Tripp County

    EIN 873096763 · Headquarters: Winner, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  77. Winner Area Right to Life

    EIN 832418582 · Headquarters: Mina, SD, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  78. Winner Community Playhouse

    EIN 460349647 · Headquarters: winner, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  79. Winner Country Club Inc

    EIN 460259749 · Headquarters: WINNER, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  80. Winner Music Boosters

    EIN 874026085 · Headquarters: Winner, SD, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  81. Winner Post No 4674 Veterans of Foreign Wars of the United States

    EIN 460213608 · Headquarters: Winner, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  82. Wolakota Waldorf Society

    EIN 363957237 · Headquarters: KYLE, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  83. Wolsey American Legion

    EIN 900630634 · Headquarters: Wolsey, SD, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  84. Wolsey Firefighter Association Inc

    EIN 473595438 · Headquarters: WOLSEY, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  85. Women in Action

    EIN 460393282 · Headquarters: Armour, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  86. Women on Track Foundation

    EIN 300584733 · Headquarters: Sioux Falls, SD, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  87. Woodlawn Cemetery Association

    EIN 460207570 · Headquarters: SIOUX FALLS, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  88. Working Against Violence Inc

    EIN 460355127 · Headquarters: RAPID CITY, SD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  89. Worthing American Legion Post 177

    EIN 466016083 · Headquarters: WORTHING, SD, USA · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-EZ

  90. Xi Theta Inc

    EIN 460359283 · Headquarters: Bruce, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  91. Yaks Give Back Foundation

    EIN 833097245 · Headquarters: SIOUX FALLS, SD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  92. Yankton Airshows Inc

    EIN 833820134 · Headquarters: yankton, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  93. Yankton Area Chamber of Commerce

    EIN 460208010 · Headquarters: YANKTON, SD, USA · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990

  94. Yankton Area Literacy Council

    EIN 363605392 · Headquarters: Yankton, SD, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  95. Yankton Area Riverboat Days Inc

    EIN 450391997 · Headquarters: YANKTON, SD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  96. Yankton Area Senior Citizen

    EIN 460309709 · Headquarters: YANKTON, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  97. Yankton Community Library Foundation Incorporated

    EIN 364740069 · Headquarters: Yankton, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  98. Yankton County Parents as Teachers

    EIN 271525381 · Headquarters: YANKTON, SD, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  99. Yankton County Sharpshooters Inc

    EIN 460416984 · Headquarters: Yankton, SD, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  100. Yankton Education and Health Care Fund Inc

    EIN 460341286 · Headquarters: Yankton, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

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