Nonprofits in Watertown, South Dakota

Nonprofits in Watertown, South Dakota. Browse 222 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. 4 the Kids Sd

    EIN 824727673 · Headquarters: Watertown, SD, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  2. 4-H Clubs & Affiliated 4-H Organizations

    EIN 412255812 · Headquarters: Watertown, SD, US · Youth Development · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  3. 4-H Clubs & Affiliated 4-H Organizations

    EIN 460431062 · Headquarters: Watertown, SD, US · Youth Development · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  4. 4-H Clubs & Affiliated 4-H Organizations

    EIN 460454749 · Headquarters: WATERTOWN, SD, US · Youth Development · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  5. 4-H Clubs & Affiliated 4-H Organizations

    EIN 611547594 · Headquarters: Watertown, SD, US · Youth Development · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  6. Access Ministry

    EIN 271695680 · Headquarters: WATERTOWN, SD, USA · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  7. Alaska Academy of Family Physicians

    EIN 237149286 · Headquarters: WATERTOWN, SD, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990

  8. American Federation of Government Employees

    EIN 460353443 · Headquarters: Watertown, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  9. American Federation of State County & Municipal Employees

    EIN 237281795 · Headquarters: Watertown, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  10. American Legion

    EIN 460454665 · Headquarters: Watertown, SD, US · Public & Societal Benefit · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  11. American Legion

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

  12. American Legion Auxiliary

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

  13. American Postal Workers Union

    EIN 237343148 · Headquarters: WATERTOWN, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  14. Ancient Free & Accepted Masons of South Dakota 13 Concord Lodge

    EIN 460355835 · Headquarters: WATERTOWN, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  15. Arrow Education Foundation Inc

    EIN 460453170 · Headquarters: WATERTOWN, SD, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  16. Assisting Children to Smile Inc

    EIN 462406774 · Headquarters: WATERTOWN, SD, US · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  17. B S Behind Bars

    EIN 832009071 · Headquarters: WATERTOWN, SD, USA · Crime & Legal Related · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  18. Beacon Center

    EIN 460358638 · Headquarters: WATERTOWN, SD, USA · Housing & Shelter · Latest available filing year: 2024 · Primary form: IRS Form 990

  19. Benedictine Sisters Foundation of Watertown

    EIN 460441468 · Headquarters: WATERTOWN, SD, USA · Religion Related · Latest available filing year: 2022 · Primary form: IRS Form 990

  20. Benedictine Volunteers Inc

    EIN 473251081 · Headquarters: WATERTOWN, SD, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2017 · Primary form: IRS Form 990

  21. Benevolent & Protective Order of Elks Watertown Lodge 838

    EIN 460203420 · Headquarters: WATERTOWN, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  22. Bevy Inc

    EIN 202987351 · Headquarters: Watertown, SD, US · Human Services · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  23. Big Sioux Nursery Inc

    EIN 460442973 · Headquarters: WATERTOWN, SD, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  24. Boys and Girls Club of Watertown

    EIN 460311845 · Headquarters: Watertown, SD, USA · Youth Development · Latest available filing year: 2024 · Primary form: IRS Form 990

  25. Brotherhood of Maintenance of Way Employees

    EIN 383915457 · Headquarters: WATERTOWN, SD, US · Community Improvement & Capacity Building · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  26. Building Stronger Hearts Inc

    EIN 462685098 · Headquarters: WATERTOWN, SD, US · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  27. Catholic Order of Foresters

    EIN 237581297 · Headquarters: Watertown, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. Challenger Learning Center of South Dakota

    EIN 863672980 · Headquarters: WATERTOWN, SD, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  29. Charles Langenfeld Scholarship Trust

    EIN 466062063 · Headquarters: Watertown, SD, US · Education · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  30. Childrens Charity & Youth Activity Fund Inc

    EIN 881172463 · Headquarters: Watertown, SD, US · Youth Development · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  31. Codington Clark Electric Charitable Fund Inc

    EIN 453039358 · Headquarters: Watertown, SD, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  32. Codington County 4-H Leader Association

    EIN 460344153 · Headquarters: WATERTOWN, SD, USA · Youth Development · Latest available filing year: 2011 · Primary form: IRS Form 990-EZ

  33. Codington County American Legion Post 17

    EIN 460217759 · Headquarters: WATERTOWN, SD, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990

  34. Codington County Cares Cancer Foundation

    EIN 208450014 · Headquarters: Watertown, SD, US · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  35. Codington County Deputy Sheriffs Association

    EIN 462585263 · Headquarters: Watertown, SD, US · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  36. Codington County Historical Society

    EIN 460335602 · Headquarters: WATERTOWN, SD, USA · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990

  37. Codington County Pro Pheasants Inc

    EIN 752991244 · Headquarters: WATERTOWN, SD, USA · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  38. Codington-clark Electric Cooperative

    EIN 460121065 · Headquarters: WATERTOWN, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  39. Community Transit of Watertown Sisseton Inc

    EIN 843240474 · Headquarters: Watertown, SD, USA · Public & Societal Benefit · Latest available filing year: 2023 · Primary form: IRS Form 990

  40. Coteau Des Plaines Gem & Mineral Society

    EIN 237161013 · Headquarters: Watertown, SD, US · Science & Technology · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  41. Cryptic Masons of South Dakota

    EIN 237193475 · Headquarters: Watertown, SD, US · Mutual & Membership Benefit · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  42. Dakota Sportsman Inc

    EIN 272170189 · Headquarters: Watertown, SD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  43. Daughters of the Nile

    EIN 237127061 · Headquarters: Watertown, SD, US · Arts, Culture & Humanities · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  44. David's Sword Ministries

    EIN 453417007 · Headquarters: WATERTOWN, SD, US · Religion Related · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  45. Delta Kappa Gamma Society

    EIN 363103629 · Headquarters: Watertown, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  46. Delta Kappa Gamma Society International

    EIN 237415518 · Headquarters: WATERTOWN, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  47. Direction Ministries Inc

    EIN 454988237 · Headquarters: Watertown, SD, US · Human Services · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  48. Disabled American Veterans Auxiliary Inc

    EIN 273673394 · Headquarters: Watertown, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  49. Divine Providence of South Dakota

    EIN 822330003 · Headquarters: WATERTOWN, SD, US · Crime & Legal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  50. Downtown Watertown Collective Inc

    EIN 413115630 · Headquarters: WATERTOWN, SD, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  51. Elite Alliance Volleyball Club

    EIN 814186179 · Headquarters: WATERTOWN, SD, USA · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  52. Emmanuel Lutheran Cemetery of Grover

    EIN 466040141 · Headquarters: WATERTOWN, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  53. Engels Family Foundation

    EIN 472553141 · Headquarters: WATERTOWN, SD, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  54. Faith Aid

    EIN 463260343 · Headquarters: Watertown, SD, USA · International, Foreign Affairs & National Security · Latest available filing year: 2024 · Primary form: IRS Form 990

  55. Fallout Shelter Ministries Inc

    EIN 814834361 · Headquarters: WATERTOWN, SD, USA · Crime & Legal Related · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  56. Farmers Educational & Cooperative Union of America

    EIN 460260304 · Headquarters: Watertown, SD, US · Education · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  57. Farmers Educational & Cooperative Union of America

    EIN 466018320 · Headquarters: Watertown, SD, US · Education · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  58. Firefighter Skill Mastery

    EIN 331822733 · Headquarters: Watertown, SD, US · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  59. First District Development Company

    EIN 460374958 · Headquarters: WATERTOWN, SD, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990

  60. Focus Watertown

    EIN 470813269 · Headquarters: Watertown, SD, US · Community Improvement & Capacity Building · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  61. Fraternal Order of Eagles

    EIN 237593373 · Headquarters: Watertown, SD, US · Mutual & Membership Benefit · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  62. Fraternal Order of Eagles

    EIN 460137087 · Headquarters: Watertown, SD, US · Mutual & Membership Benefit · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  63. Fraternal Order of Eagles

    EIN 471803215 · Headquarters: Watertown, SD, US · Mutual & Membership Benefit · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  64. Fraternal Order of Police

    EIN 237179982 · Headquarters: Watertown, SD, US · Crime & Legal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  65. Fraternal Order of Police

    EIN 237585776 · Headquarters: Watertown, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  66. Freedom Flannels

    EIN 920606419 · Headquarters: Watertown, SD, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  67. Friends of the Goss Opera House Inc

    EIN 821384455 · Headquarters: WATERTOWN, SD, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990

  68. Friends of the Watertown Regional Library

    EIN 383666265 · Headquarters: Watertown, SD, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  69. Garden City Repeater Inc

    EIN 363835040 · Headquarters: Watertown, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  70. Glacial Lakes and Prairies Tourism Association

    EIN 237415332 · Headquarters: WATERTOWN, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  71. Glacial Lakes Humane Society and Shelter

    EIN 460343062 · Headquarters: WATERTOWN, SD, USA · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990

  72. Glacial Lakes Multicultural Center Inc

    EIN 834070282 · Headquarters: WATERTOWN, SD, USA · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  73. Glacial Lakes RC Club

    EIN 372146975 · Headquarters: Watertown, SD, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  74. Good Stewards Inc

    EIN 460441111 · Headquarters: WATERTOWN, SD, USA · Crime & Legal Related · Latest available filing year: 2024 · Primary form: IRS Form 990

  75. Habitat for Humanity of Greater Watertown Region

    EIN 460416002 · Headquarters: WATERTOWN, SD, USA · Housing & Shelter · Latest available filing year: 2024 · Primary form: IRS Form 990

  76. Hands for Life

    EIN 880796740 · Headquarters: Watertown, SD, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  77. Haven Center

    EIN 923100597 · Headquarters: WATERTOWN, SD, USA · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  78. Hook Me Up with a Job

    EIN 800562409 · Headquarters: Watertown, SD, US · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  79. Human Service Agency

    EIN 460275247 · Headquarters: WATERTOWN, SD, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  80. Human Service Agency Foundation

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

  81. Independent Community Bankers of Sd

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

  82. Independent Order of Odd Fellows

    EIN 237610848 · Headquarters: Watertown, SD, US · Mutual & Membership Benefit · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  83. Independent Order of Odd Fellows

    EIN 460375808 · Headquarters: Watertown, SD, US · Mutual & Membership Benefit · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  84. Independent Order of Odd Fellows

    EIN 460389839 · Headquarters: Watertown, SD, US · Mutual & Membership Benefit · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  85. International Association of Lions Clubs

    EIN 466015718 · Headquarters: Watertown, SD, US · Recreation & Sports · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  86. International Association of Machinists & Aerospace Workers

    EIN 460332746 · Headquarters: Watertown, SD, US · Employment · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  87. 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

  88. Izaak Walton League of America Inc

    EIN 460362465 · Headquarters: Watertown, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  89. Jenkins Living Center

    EIN 460439343 · Headquarters: Watertown, SD, US · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  90. Jenkins Living Center Inc

    EIN 460242831 · Headquarters: WATERTOWN, SD, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  91. Kampeska Cemetery Association Inc

    EIN 460432718 · Headquarters: watertown, SD, US · Mutual & Membership Benefit · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  92. Kampeska Northeast Unit-marine Corps League Auxiliary

    EIN 261978526 · Headquarters: Watertown, SD, US · Unknown & Unclassified · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  93. Karing Kapers Inc

    EIN 460437544 · Headquarters: WATERTOWN, SD, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  94. Kiwanis Club of Watertown

    EIN 466014566 · Headquarters: WATERTOWN, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  95. Knights of Columbus

    EIN 237108203 · Headquarters: WATERTOWN, SD, USA · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  96. Knights Templar of the United States of America

    EIN 237618891 · Headquarters: Watertown, SD, US · Mutual & Membership Benefit · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  97. Lake Area Child Protection Inc

    EIN 460382317 · Headquarters: Watertown, SD, US · Education · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  98. Lake Area Kidney Endowment

    EIN 474601728 · Headquarters: WATERTOWN, SD, US · Health Care · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  99. Lake Area Pet Pantry

    EIN 814125276 · Headquarters: Watertown, SD, US · Animal Related · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  100. Lake Area Technical College Alumni Association

    EIN 460381673 · Headquarters: WATERTOWN, SD, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

All pages