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Data / Nonprofits / South Dakota / Custer

Nonprofits in Custer, SD: 66 registered with the IRS

66 nonprofits are registered with the IRS in Custer, SD, 52 of them 501(c)(3) charities; the 14 that report revenue took in $30.3 million. The largest by revenue: Black Hills Electric Cooperative Inc ($26.7 million), Custer Ambulance Service Inc ($1 million), Custer City Fire Department ($630,960). Most common causes: recreation and sports (7), religion-related (6), education (5).

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
Black Hills Electric Cooperative Inc501(c)(12)1955$26.7 million$83.4 million2025-12
Custer Ambulance Service IncHealth care501(c)(3)$1 million$1.5 million2024-12
Custer City Fire Department501(c)(4)1970$630,960$4.8 million2025-12
Custer Area Chamber of Commerce and Visitors Bureau501(c)(6)1975$503,148$545,3282024-12
Women Escaping A Violent Environment WeaveCrime and legal-related501(c)(3)1993$279,806$141,1142025-09
Esthers RisingHuman services501(c)(3)2021$258,804$410,4932025-12
Growing Roots IncHuman services501(c)(3)2025$214,625$139,1792025-12
Custer Food Pantry IncFood, agriculture and nutrition501(c)(3)2005$163,690$453,0472025-12
Custer County Historical Society501(c)(3)1974$160,166$260,3462025-12
Girl Camper Getaways IncRecreation and sports501(c)(4)2025$106,013$72,6542025-12
Custer County Senior Citizens Club501(c)(3)1983$95,107$368,2332025-12
Operation Black Hills CabinHuman services501(c)(3)2011$83,265$869,6962024-12
Caedc FoundationCommunity improvement and capacity building501(c)(3)2019$63,290$12,6562024-12
Bison People Land ProductionsEducation501(c)(3)2025$2,000$2,0002025-12
Abundant Life Fellowship of Custer SDReligion-related501(c)(3)2018
Alano Society of Custer IncMental health and crisis intervention501(c)(3)2023$0$02025-12
American Legion501(c)(19)1946$0$02025-12
American Legion Auxiliary Unit 46Public and societal benefit501(c)(3)2026$0$02025-12
Bahais of Custer501(c)(3)1965
Black Hills Back Country Horsemen of South DakotaRecreation and sports501(c)(3)2015$0$02025-12
Black Hills Holy Land Church501(c)(3)1989
Christmas for KidsPhilanthropy, voluntarism and grantmaking foundations501(c)(3)2013$0$02024-12
Christs Family Fellowship501(c)(3)1991
Crossroads Church of Custer SD501(c)(3)1965
Custer Area Arts Council IncArts, culture and humanities501(c)(3)1997$0$02025-12
Custer Area Economic Development CorporationCommunity improvement and capacity building501(c)(6)2011$0$02024-12
Custer Area Veterans Memorial Association IncArts, culture and humanities501(c)(3)2018$0$02025-12
Custer Community Action TeamFood, agriculture and nutrition501(c)(3)2020$0$02025-12
Custer County Library FoundationEducation501(c)(3)2012$0$02025-12
Custer Lutheran Fellowship501(c)(3)19872013-12
Custer Ministerial Alliance IncReligion-related501(c)(3)2014$0$02024-12
Custer Piecemakers Quilt GuildRecreation and sports501(c)(7)2015$0$02025-12
Custer Wesleyan Church501(c)(3)1970
Custer Youth WrestlingRecreation and sports501(c)(3)2024$0$02026-01
Custer Youth and Alumni FoundationYouth development501(c)(3)1997$0$02025-06
Dakota Area Fire Chaplains AssociationReligion-related501(c)(3)2025$0$02025-12
Friends of Custer County Search & Rescue IncPublic safety, disaster preparedness and relief501(c)(3)2013$0$02024-12
Friends of the Paha Sapa GrottoEnvironment501(c)(3)2019$0$02024-12
Humane Society of Custer Area IncAnimal-related501(c)(3)2003$0$02025-12
International Association of Lions Clubs501(c)(4)1940$0$02025-06
Knights of Columbus501(c)(8)1940$0$02024-12
Lawler Historical Society IncArts, culture and humanities501(c)(3)2020$0$02025-12
Living Outreach Church501(c)(3)1964
Mitchell Woods & Fox Corporation501(c)(3)1990$173,7422025-12
Mountain West AeronautsRecreation and sports501(c)(7)2025$0$02025-12
National Active and Retired Federal Employees Association501(c)(5)1963$0$02025-12
New Trails MinistryMental health and crisis intervention501(c)(3)2017$0$02025-12
Oa MinistriesReligion-related501(c)(3)2014
Our Redeemer Lutheran Church501(c)(3)1941
Paha Sapa GrottoRecreation and sports501(c)(7)2018$0$02023-12
Patriotic Alliance of Loyal Service - PalsPublic and societal benefit501(c)(3)2025$0$02025-12
Preserve French Creek Foundation IncScience and technology501(c)(3)2025$0$02025-12
Preserve French Creek IncEnvironment501(c)(3)2023$4,7942025-12
Recovery Intervention Support EducationMental health and crisis intervention501(c)(3)2018$0$02025-12
Rotary International501(c)(4)1966$0$02026-06
Royal House MinistriesReligion-related501(c)(3)2009$0$02025-12
Searchlight Foundation IncCrime and legal-related501(c)(3)2021$0$02024-12
Servants Heart FoundationPhilanthropy, voluntarism and grantmaking foundations501(c)(3)2007$636,7222025-12
Shepherd of the Hills Lutheran501(c)(3)1966
South Dakota Stake of ZionReligion-related501(c)(3)2010
Southdown Indian Mountain Healing IncEducation501(c)(3)2020$0$02025-12
Southern Hills Bible Church501(c)(3)2017
Southern Hills Shotokan KarateRecreation and sports501(c)(3)2024$0$02025-12
Tennyson Family FoundationEducation501(c)(3)2009$107,3392024-12
Wildcat Booster ClubEducation501(c)(3)2017$0$02024-06
Zonta International501(c)(4)1953$0$02026-05

By cause in Custer, 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.