Skip to the page

Data / Nonprofits / South Dakota / Watertown

Nonprofits in Watertown, SD: 199 registered with the IRS

199 nonprofits are registered with the IRS in Watertown, SD, 142 of them 501(c)(3) charities; the 75 that report revenue took in $300.7 million. The largest by revenue: Prairie Lakes Health Care System Inc ($202.9 million), Codington-Clark Electric Cooperative Inc ($17.9 million), Human Service Agency ($17.4 million). Most common causes: recreation and sports (18), human services (15), community improvement and capacity building (10).

SpecStream is the live web data engine for teams and agents. It reads the IRS register of exempt organizations as the IRS updates it, and this page is that reading. Ask for the nonprofits you need by place, cause and size, with their latest Form 990 figures and websites, and they arrive in your sheet, CRM, Slack or agent.

Every organization, largest by revenue first

OrganizationCategoryTypeSinceRevenueAssetsFiling
Prairie Lakes Health Care System IncHealth care501(c)(3)1987$202.9 million$461.7 million2025-05
Codington-Clark Electric Cooperative Inc501(c)(12)1949$17.9 million$63.5 million2025-12
Human Service AgencyHuman services501(c)(3)1962$17.4 million$20.3 million2025-06
Jenkins Living Center IncHuman services501(c)(3)1965$10.6 million$15.6 million2025-03
Village of Harmony HillHousing and shelter501(c)(3)2022$6.7 million$29.8 million2024-12
Watertown Community FoundationPhilanthropy, voluntarism and grantmaking foundations501(c)(3)2025$4.6 million$943,8932024-12
Lake Area Technical College FoundationEducation501(c)(3)1993$4.5 million$11.4 million2025-06
National Association of Tower Erectors501(c)(6)1995$4.4 million$9 million2025-09
Community Transit of Watertown Sisseton IncPublic and societal benefit501(c)(3)2020$4.3 million$4.8 million2025-09
Sioux Rural Water System Inc501(c)(12)1988$3.6 million$26.9 million2025-12
Watertown Development Company501(c)(6)1995$2.4 million$23.1 million2025-07
Boys & Girls Club of Watertown IncYouth development501(c)(3)1973$1.6 million$6.1 million2024-12
Redlin Art Center501(c)(3)2011$1.2 million$25.2 million2024-12
Beacon CenterHousing and shelter501(c)(3)1981$1.1 million$2.3 million2025-06
Tower Industry Family Support Charitable FoundationHealth care501(c)(3)2014$988,535$6.5 million2025-12
Big Sioux Nursery IncEnvironment501(c)(3)1997$863,656$2 million2025-12
Prairie Lakes Health Care FoundationHealth care501(c)(3)1980$816,715$5.4 million2024-12
Watertown Area Chamber of Commerce501(c)(6)1945$811,632$503,7182025-09
Arrow Education Foundation IncEducation501(c)(3)1999$809,385$3.7 million2025-06
Friends of the Goss Opera House IncCommunity improvement and capacity building501(c)(3)2018$781,939$4.2 million2025-12
Benet Place Assisted Living501(c)(3)1946$750,265$787,7372005-07
Watertown Christian School501(c)(3)1992$716,748$665,6432025-06
Watertown Area United WayPhilanthropy, voluntarism and grantmaking foundations501(c)(3)1970$668,384$924,2442024-12
Watertown Convention & Visitors Bureau IncCommunity improvement and capacity building501(c)(6)2008$651,251$740,4242025-12
South Dakota Amateur Hockey AssociationYouth development501(c)(3)1999$649,060$340,6962025-08
Independent Community Bankers Association of South Dakota501(c)(6)1993$505,976$653,7552025-12
Lake Area Zoological SocietyAnimal-related501(c)(3)1973$463,463$2 million2025-12
American Legion501(c)(19)1946$460,319$1.4 million2025-06
Watertown Hockey Association Inc501(c)(3)1975$435,302$345,1862025-12
Watertown Figure Skate Club IncRecreation and sports501(c)(3)2014$426,000$1.3 million2025-06
Watertown Baseball Parents Association IncRecreation and sports501(c)(3)2001$419,885$109,8562025-12
Midwest Evangelistic AssociationReligion-related501(c)(3)2018$385,416$571,4412025-12
Glacial Lakes Humane Society and ShelterAnimal-related501(c)(3)1993$358,189$1 million2025-12
Human Service Agency Foundation501(c)(3)1984$341,065$2.3 million2025-06
Watertown Youth Soccer AssociationRecreation and sports501(c)(3)1998$329,908$234,4712025-06
Good Stewards IncCrime and legal-related501(c)(3)1996$290,347$218,4862025-12
Watertown Area Community Foundation IncPhilanthropy, voluntarism and grantmaking foundations501(c)(3)2023$273,563$34.5 million2024-12
American Academy of Family Physicians501(c)(6)1950$273,192$246,7572025-12
Benevolent & Protective Order of Elks of the USA501(c)(8)1951$272,935$535,4162026-03
Watertown Area Swim Club501(c)(3)1977$268,200$168,4052025-08
Glacial Lakes and Prairies Tourism Association501(c)(6)1975$260,499$283,2892025-09
Watertown Christian School Foundation IncEducation501(c)(3)2012$235,211$84,8212024-12
Alaska Academy of Family PhysiciansCommunity improvement and capacity building501(c)(6)2016$223,081$145,8692025-12
Elite Alliance Volleyball ClubRecreation and sports501(c)(3)2018$199,891$316,5122025-12
Codington County Historical Society IncArts, culture and humanities501(c)(3)1981$185,109$704,7512025-12
Haven CenterHuman services501(c)(3)2023$182,955$211,4892025-12
Watertown Area People Against Child HungerFood, agriculture and nutrition501(c)(3)2014$159,200$191,0922025-05
Watertown Cares IncHousing and shelter501(c)(3)2023$153,322$1 million2025-12
Watertown Area Home Builders Association IncCommunity improvement and capacity building501(c)(6)2014$153,270$46,5132025-12
Northeast South Dakota Association of Realtors IncCommunity improvement and capacity building501(c)(6)2023$148,693$145,9862025-12
Fallout Shelter Ministries IncCrime and legal-related501(c)(3)2017$144,871$204,8692024-12
Jenkins Living Center FoundationHuman services501(c)(3)1996$135,224$1.9 million2025-03
Knights of ColumbusMutual and membership benefit501(c)(8)1940$135,213$136,4872025-12
Veterans of Foreign Wars of the United States Dept of South Dakota501(c)(4)1964$133,049$276,0722025-12
B S Behind BarsCrime and legal-related501(c)(3)2018$126,260$140,8402024-12
Lake Area Technical Institute Alumni AssociationEducation501(c)(3)1988$103,441$442,5552025-06
Rising Star Athletics Booster ClubRecreation and sports501(c)(3)2023$91,729$46,0072024-12
Town Players501(c)(3)1977$86,447$298,7812025-06
Vietnam Veterans of America Inc501(c)(19)1984$80,418$105,8732026-02
Mellette Memorial Association501(c)(3)1946$72,757$636,4352024-12
Watertown Pink Ladies Dart LeaguePhilanthropy, voluntarism and grantmaking foundations501(c)(3)2016$72,683$68,9302025-12
Rotary International501(c)(4)1958$64,816$35,9542026-06
Access MinistryReligion-related501(c)(3)2013$64,235$177,9022025-12
Search & Rescue Support IncHealth care501(c)(3)2006$62,114$283,6022024-12
Habitat for Humanity International IncHousing and shelter501(c)(3)1987$61,843$723,6732025-06
Watertown Concert AssociationArts, culture and humanities501(c)(3)2009$57,752$133,7772025-06
Watertown Senior Activities CenterHuman services501(c)(3)2021$56,101$142,1362024-12
International Association of Lions Clubs501(c)(4)1940$51,881$85,1892025-06
Watertown Pickleball AssociationRecreation and sports501(c)(3)2022$40,198$89,7222025-12
Codington County Pro Phesants IncAnimal-related501(c)(3)2017$33,779$71,5172025-12
Optimist International501(c)(4)1958$28,149$160,6462025-09
Kiwanis International Inc501(c)(4)1961$26,868$10,4402025-09
Glacial Lakes Multicultural Center IncHuman services501(c)(3)2019$24,109$2,1082025-12
Voluntary Employees Beneficiary AssociationMutual and membership benefit501(c)(9)1996$18,693$54,9172023-12
Watertown Laker FoundationRecreation and sports501(c)(3)2022$15,712$43,6522026-06
4 the Kids SDHuman services501(c)(3)2019$0$02025-12
American Federation of Government Employees501(c)(5)1940$0$02025-12
American Federation of State County & Municipal Employees501(c)(5)1957$0$02025-12
American Legion501(c)(19)19342023-04
American Legion501(c)(19)1946$0$02025-07
American Legion Auxiliary501(c)(19)1946$0$02025-12
American Postal Workers Union501(c)(5)1973$0$02025-12
Ancient Free & Accepted Masons of South Dakota 13 Concord Lodge501(c)(10)1973$0$02025-12
Assisting Children To Smile IncHealth care501(c)(3)2024$0$02025-09
Black Hills Anthropomorphic ArtsArts, culture and humanities501(c)(3)2025
Boys & Girls Clubs of America501(c)(4)1999
Catholic Daughters of the Americas501(c)(3)1946
Catholic Order of Foresters501(c)(8)1972$0$02025-12
Challenger Learning Center of South DakotaEducation501(c)(3)2022$0$02025-12
Childrens Charity & Youth Activity Fund IncYouth development501(c)(3)2022$0$02025-12
Christian Life Assembly of God501(c)(3)19642006-12
Codington Clark Electric Charitable Fund IncHuman services501(c)(3)2011$0$02025-12
Codington ConnectsHuman services501(c)(3)2025
Codington County Deputy Sheriffs AssociationPublic safety, disaster preparedness and relief501(c)(5)2014$0$02026-01
Constant Church of God IncReligion-related501(c)(3)2024
Davids Sword MinistriesReligion-related501(c)(3)2012$0$02025-06
Delta Kappa Gamma Society501(c)(6)1965$0$02026-06
Delta Kappa Gamma Society International501(c)(6)1965$0$02025-06
Disabled American Veterans501(c)(4)1942$0$02026-06
Disabled American Veterans Auxiliary Inc501(c)(4)1973$0$02025-06
Divine Providence of South DakotaCrime and legal-related501(c)(3)2017$0$02025-12
Downtown Watertown Collective IncCommunity improvement and capacity building501(c)(6)2026$0$02025-12
Emmanuel Holiness Church501(c)(3)1964
Engels Family FoundationPhilanthropy, voluntarism and grantmaking foundations501(c)(3)2016$439,7852025-12
Family Worship Center Foursquare501(c)(3)1949
Firefighter Skill MasteryPublic safety, disaster preparedness and relief501(c)(3)2024$0$02025-12
First Baptist Church501(c)(3)19552010-12
Fraternal Order of PoliceCrime and legal-related501(c)(8)1972$0$02025-12
Fraternal Order of Police501(c)(8)1972$0$02026-03
Freedom FlannelsEducation501(c)(3)2022$0$02025-12
Friends of the Watertown Regional LibraryEducation501(c)(3)2003$0$02025-09
Future Business Leaders of America Phi Beta Lambda Inc501(c)(3)1971
Garden City Repeater Inc501(c)(3)1992$0$02025-12
Glacial Lakes RC ClubRecreation and sports501(c)(3)2025$0$02025-12
Grace Lutheran Church501(c)(3)1987
Great Plains Lutheran High School501(c)(3)1966
Harvest Community Baptist Church of Watertown South DakotaReligion-related501(c)(3)2012
Higher Life FellowshipCommunity improvement and capacity building501(c)(3)2026
Hope for Life Community Church501(c)(3)1975
Immaculate Conception School Foundation Inc501(c)(3)1946
Izaak Walton League of America Inc501(c)(3)1985$0$02025-08
Karing Kapers IncPhilanthropy, voluntarism and grantmaking foundations501(c)(3)1995$0$02023-12
Lake Area Kidney EndowmentHealth care501(c)(3)2015$0$02025-12
Lake Kampeska Water Project District501(c)(3)1978
Living Faith Christian Center Inc501(c)(3)1982
Lutheran Church of Our Redeemer501(c)(3)19882013-05
Lutheran Edfund South Dakota IncEducation501(c)(3)2026
Marine Corps League501(c)(4)1946$0$02025-06
Marine Corps LeaguePublic and societal benefit501(c)(4)1946$0$02026-06
Messer Family FoundationPhilanthropy, voluntarism and grantmaking foundations501(c)(3)1995$262,2382025-12
Military VisionReligion-related501(c)(3)1995$0$02025-12
Mobridge Assembly of God501(c)(3)1964
Modern Woodmen of America501(c)(8)1961$0$02025-12
Modern Woodmen of America501(c)(8)1972$0$02025-12
Mount Olive Lutheran Church501(c)(3)1941
National Active and Retired Federal Employees Association501(c)(5)1967$0$02025-12
National Association of Letter Carriers501(c)(5)2019$0$02025-12
National Association of Women in Construction501(c)(6)1961$0$02025-12
Native HoopArts, culture and humanities501(c)(3)2024$0$02026-01
Neighborhood Church501(c)(3)1992
Neighborhood Pantry - Camp ButlerFood, agriculture and nutrition501(c)(3)2024$0$02025-12
New Life Evangelical Free Church Watertown501(c)(3)1965
Next Town MinistriesReligion-related501(c)(3)2022$0$02025-12
North Country Fiber Fair IncRecreation and sports501(c)(3)2012$10,9342024-12
Northern Prairie Arts501(c)(3)1986$0$02024-12
Order of the Eastern Star of South Dakota501(c)(10)1972$0$02024-12
Order of the Eastern Star of South Dakota501(c)(10)1972$0$02025-12
Our Little Village Learning Center at Harmony HillHuman services501(c)(3)2024$0$02024-12
Prairie Lakes Legacy Fund IncHealth care501(c)(3)2026$13.9 million2025-12
Raven InternationalPublic safety, disaster preparedness and relief501(c)(3)2024
Redleg Riders Chapter Militiamen VMC IncPublic and societal benefit501(c)(3)2022$0$02025-12
Restorative Research FoundationMedical research501(c)(3)2026
Rustler Pride Scholarship ProgramEducation501(c)(3)2026
Saint Michael Parish of Clark County501(c)(3)1946
Sarahs Treasures RescueAnimal-related501(c)(3)2010$0$02024-12
Serra International501(c)(3)1949$0$02026-05
Skills USA Inc501(c)(3)1966
Society for Preservation & Encourmt of Barbershop Quartet Singing Amer501(c)(3)1946$0$02025-12
Sons of Norway501(c)(8)1972$0$02025-12
Soroptimist International of the Americas IncCrime and legal-related501(c)(3)2002$0$02025-06
South Dakota American Legion FoundationHuman services501(c)(3)2017$0$02025-12
South Dakota Chapter of American Society of Tax Professionals501(c)(6)1997$0$02025-12
St Martins Lutheran Church501(c)(3)1966
St Paul Lutheran Church501(c)(3)1966
St Peter Lutheran Church501(c)(3)1966
Temple Building Association of Watertown SDCommunity improvement and capacity building501(c)(2)2011$0$02025-12
The Paws FoundationHuman services501(c)(3)2026
Toastmasters International501(c)(3)1945$0$02023-12
Tops Club IncHealth care501(c)(3)2008$0$02025-03
United States Bowling Congress IncRecreation and sports501(c)(3)2004$0$02025-07
United States Internet Preservation SocietyCivil rights, social action and advocacy501(c)(4)2025
Upside of DownsHuman services501(c)(3)2026$0$02025-12
Veterans Memorial CorporationEducation501(c)(3)2008$0$02025-06
Veterans of Foreign Wars Department of South Dakota Auxiliary501(c)(4)1967$0$02025-07
Veterans of Foreign Wars Department of South Dakota Auxiliary501(c)(4)1967$0$02026-06
Vietnam Veterans of America Inc501(c)(19)1984$0$02026-02
Watertown Affordable Housing Initia TiveHousing and shelter501(c)(3)2026
Watertown Anglers AssociationRecreation and sports501(c)(3)2023$0$02025-12
Watertown Area Council for the Aging501(c)(3)1986$0$02025-12
Watertown Area Foster ClosetHuman services501(c)(3)2026
Watertown Area Snow QueenYouth development501(c)(3)2022$0$02025-12
Watertown Arrows SoftballRecreation and sports501(c)(3)2025$0$02025-12
Watertown Artwalk Inc501(c)(3)2021$0$02025-12
Watertown BanquetHuman services501(c)(3)1996$0$02025-12
Watertown Bowling Usbc Ba AssociationRecreation and sports501(c)(3)2016$0$02025-06
Watertown Breast Cancer Support GroupDiseases, disorders and medical disciplines501(c)(3)2016$0$02025-12
Watertown Business Association IncCommunity improvement and capacity building501(c)(6)2015$0$02025-12
Watertown Business and Professional Womens Club of Watertown South Dak501(c)(6)1976$0$02026-05
Watertown Curling ClubRecreation and sports501(c)(3)2024$0$02024-12
Watertown Fastpitch Softball Association IncRecreation and sports501(c)(3)2016$0$02023-10
Watertown Foursquare Church501(c)(3)1949
Watertown Lacrosse ClubRecreation and sports501(c)(3)2020$0$02025-12
Watertown LoveArts, culture and humanities501(c)(3)2020$0$02024-12
Watertown Shamrocks End of Watch Fu ND IncPublic safety, disaster preparedness and relief501(c)(3)2026
Watertown South Dakota Congregation of Jehovahs Witnesses501(c)(3)1989
Watertown Storm SoftballRecreation and sports501(c)(3)2024$0$02025-10
Watertown Tennis AssociationRecreation and sports501(c)(3)2022$0$02025-12
Watertown Volunteer CenterCommunity improvement and capacity building501(c)(3)2000$0$02024-06
Watertown Wesleyan Church501(c)(3)

By cause in Watertown, SD

Nonprofits in every city of the state

Read from the IRS Exempt Organizations Business Master File, updated by the IRS on October 24, 2026 and rebuilt here every morning. Revenue and assets are from each organization's latest filing as the IRS lists it; the IRS record is the official one. Organizations only: no people are named on these pages.