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Data / Nonprofits / Iowa / Jefferson

Nonprofits in Jefferson, IA: 63 registered with the IRS

63 nonprofits are registered with the IRS in Jefferson, IA, 45 of them 501(c)(3) charities; the 19 that report revenue took in $5.8 million. The largest by revenue: Grow Greene County Gaming Corporation ($2 million), Greene County Medical Center Foundation ($870,796), Greene County Early Learning Center ($803,908). Most common causes: arts, culture and humanities (6), recreation and sports (5), philanthropy, voluntarism and grantmaking foundations (4).

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
Grow Greene County Gaming CorporationCommunity improvement and capacity building501(c)(4)2014$2 million$1.5 million2025-12
Greene County Medical Center FoundationHealth care501(c)(3)1972$870,796$999,3902025-06
Greene County Early Learning CenterHuman services501(c)(3)2006$803,908$2.8 million2026-01
Jefferson Matters Main StreetArts, culture and humanities501(c)(3)2013$362,498$260,5112025-12
Greene County CSD FoundationEducation501(c)(3)2024$280,131$3.2 million2025-12
Greene County Development Corp501(c)(6)1974$250,295$774,3492024-12
Benevolent Patriotic Order of Does of the United States of America501(c)(10)1971$217,282$960,0422025-12
Iowa Farm Business Association501(c)(5)1970$197,915$762,6652025-06
Greene County Multicultural Family Resource CenterCommunity improvement and capacity building501(c)(3)2024$137,331$47,5522025-12
Sierra Community TheatreArts, culture and humanities501(c)(3)2013$124,944$280,3972024-12
Greene County Iowa Historical SocietyArts, culture and humanities501(c)(3)2024$106,831$290,6742026-03
Living Hope Ministries IncInternational, foreign affairs and national security501(c)(3)2016$79,811$107,8472025-12
Iowa Farm Bureau Federation501(c)(5)1945$76,393$1.1 million2025-12
Greene County Youth Athletic Association IncRecreation and sports501(c)(3)2006$75,873$301,5972026-03
Jefferson Public Library FoundationPhilanthropy, voluntarism and grantmaking foundations501(c)(3)2026$55,758$55,5402025-12
Rotary InternationalPhilanthropy, voluntarism and grantmaking foundations501(c)(3)2022$55,011$67,0682025-12
Benevolent & Protective Order of Elks of the USA501(c)(8)1972$47,168$75,0302026-03
J Bruce Brolsma Educational TrustPhilanthropy, voluntarism and grantmaking foundations501(c)(3)2000$32,657$760,3222025-12
Organic Crop Improvement Association Inc501(c)(5)$8,789$12025-12
Abundant Life Ministries501(c)(3)1978
American Legion501(c)(19)1946$0$02025-12
Ancient Free & Accepted Masons of Iowa501(c)(10)1972$0$02025-12
Bell Tower Community FoundationPhilanthropy, voluntarism and grantmaking foundations501(c)(3)1996$0$02024-12
Benevolent Patriotic Order of Does of the United States of America501(c)(10)1971$0$02025-12
Beta Tau Delta Sorority501(c)(3)1954$0$02026-05
Boone Running ClubRecreation and sports501(c)(3)2023$0$02025-12
Catholic Daughters of the Americas501(c)(3)1972
Central Christian Church501(c)(3)1951
Christ Lutheran Church501(c)(3)1988
Daubendiek Disc Golf ClubRecreation and sports501(c)(3)2022$0$02025-12
David M Mosher Post No 9599 Veterans of Foreign Wars of the Us501(c)(19)2020$0$02025-12
Department of Iowa Auxiliary To the Veterans of Foreign WarsPublic and societal benefit501(c)(19)2009$0$02026-06
Department of Iowa Auxiliary To the Veterans of Foreign WarsPublic and societal benefit501(c)(19)2009$0$02026-06
Elderserve IIFood, agriculture and nutrition501(c)(3)2018$0$02026-06
Environmental Habitat CorporationEnvironment501(c)(3)2023$12024-08
Farm Business Association FoundationFood, agriculture and nutrition501(c)(3)2024$0$02026-06
First Baptist Church501(c)(3)1955
Friends of the Jefferson Public LibraryEducation501(c)(3)2010$0$02026-07
Greene County Christian Action Resource Center IncHuman services501(c)(3)1992$0$02025-12
Greene County Peace Officers AssociationCrime and legal-related501(c)(3)2018$0$02025-12
Greenewood of Jefferson Iowa501(c)(3)1980$0$02025-12
History Boy Theatre CompanyArts, culture and humanities501(c)(3)2020$0$02025-12
Home State Bank Charitable Foundation501(c)(3)1992$244,3822024-12
Iowa Conservation Alliance IncEnvironment501(c)(4)2012$0$02025-12
Iowa Lincoln Highway Association IncArts, culture and humanities501(c)(3)2019$0$02026-06
Jefferson Community Betterment FoundationCommunity improvement and capacity building501(c)(3)2009$0$02025-12
Jefferson Fire Fighters AssociationPublic safety, disaster preparedness and relief501(c)(3)2026
Jefferson Gospel Church501(c)(3)1964
Jefferson Gospel Open Bible Church501(c)(3)1971
Kiwanis International Inc501(c)(4)1958$0$02025-09
Lions Clubs of Iowa Multiple District 9 IncorporatedHuman services501(c)(4)2020$0$02025-06
MWR FoundationMental health and crisis intervention501(c)(3)2023$3,4612025-12
People for Animal Welfare SocietyAnimal-related501(c)(3)2002$0$02025-12
Raccoon Valley Mutual Insurance Assoc and Subsidary501(c)(15)1988
Rotary International501(c)(4)1958$0$02025-06
Sebolt Wrestling Syndicate IncorporatedRecreation and sports501(c)(3)2023$0$02025-12
St Joseph Church501(c)(3)19462014-06
The@sanctuary-JeffersonReligion-related501(c)(3)2016
Thomas Jefferson Gardens of Greene CountyArts, culture and humanities501(c)(3)2012$0$02025-12
Trinity Lutheran Church501(c)(3)1941
Underdogs TriumphAnimal-related501(c)(3)2017$0$02023-12
United States Bowling Congress IncRecreation and sports501(c)(3)2004$0$02026-07
Warren Raney Scholarship Fund501(c)(3)1987$6,3892025-12

By cause in Jefferson, IA

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.