Nonprofits in Sioux City, Iowa
Nonprofits in Sioux City, Iowa. Browse 615 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
- Missouri River Historical Development Inc
EIN 421349952 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Missouri River Rescue Association
EIN 421501250 · Headquarters: Sioux City, IA, US · Human Services · Latest available filing year: 2007 · Primary form: IRS Form 990-N
- Missouri Valley African Violet Council
EIN 271835751 · Headquarters: Sioux City, IA, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Mitchell House
EIN 830685644 · Headquarters: Sioux City, IA, US · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990
- Monsignor Lafferty Tuition Foundation
EIN 205437032 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- Morningside American Little League
EIN 260050568 · Headquarters: SIOUX CITY, IA, USA · Recreation & Sports · Latest available filing year: 2011 · Primary form: IRS Form 990-EZ
- Morningside National Little League
EIN 426262052 · Headquarters: Sioux City, IA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- Morningside University
EIN 420680400 · Headquarters: Sioux City, IA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990
- Museum Building Property Inc
EIN 352304639 · Headquarters: SIOUX CITY, IA, USA · Arts, Culture & Humanities · Latest available filing year: 2017 · Primary form: IRS Form 990
- Nakweni Sisters Womens Empowerment Project
EIN 331402662 · Headquarters: Sioux City, IA, US · International, Foreign Affairs & National Security · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Nameless Project
EIN 393610159 · Headquarters: Sioux City, IA, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- National Air Traffic Controllers Association
EIN 421320459 · Headquarters: SIOUX CITY, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- National Association of Charitable Gift Planners
EIN 421522640 · Headquarters: Sioux City, IA, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- National Association of Letter Carriers
EIN 237372180 · Headquarters: Sioux City, IA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- National Organization for Women Inc
EIN 821879801 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- National Society of the Daughters of the American Revolution
EIN 426075439 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Native American Child Care Center Inc
EIN 421149473 · Headquarters: SIOUX CITY, IA, USA · Human Services · Latest available filing year: 2022 · Primary form: IRS Form 990
- Native Youth Standing Strong
EIN 473296866 · Headquarters: Sioux City, IA, US · Youth Development · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Nebraska Association for Developmental Housing
EIN 470609108 · Headquarters: SIOUX CITY, IA, USA · Housing & Shelter · Latest available filing year: 2021 · Primary form: IRS Form 990
- Needle North Foundation
EIN 821992020 · Headquarters: Sioux City, IA, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- New Perspectives Inc
EIN 421050307 · Headquarters: SIOUX CITY, IA, USA · Employment · Latest available filing year: 2024 · Primary form: IRS Form 990
- Noahs Hope Animal Rescue Inc
EIN 270697985 · Headquarters: Sioux City, IA, USA · Animal Related · Latest available filing year: 2024 · Primary form: IRS Form 990
- Nodland-sunnyside Pta
EIN 753128756 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Nordic Male Chorus
EIN 420725624 · Headquarters: Sioux city, IA, US · Arts, Culture & Humanities · Latest available filing year: 2018 · Primary form: IRS Form 990-N
- North Stars Band Inc
EIN 421492982 · Headquarters: Sioux City, IA, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Northeast Nebraska Development Corporation
EIN 272500503 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N
- Northside Activities Association
EIN 460502098 · Headquarters: Sioux City, IA, US · Recreation & Sports · Latest available filing year: 2014 · Primary form: IRS Form 990-N
- Northwest Iowa Hospital Corporation
EIN 421019872 · Headquarters: SIOUX CITY, IA, USA · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990
- Northwest Iowa Regional Board of Realtor
EIN 420527669 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Odella S Baak Charitable Trust
EIN 476983787 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- Omaha African Violet and Gesneraid Society
EIN 261472070 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- One Combat Academy Inc
EIN 872112363 · Headquarters: Sioux City, IA, US · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Opportunities Unlimited
EIN 421354428 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Opticians Association of Iowa Inc
EIN 421100961 · Headquarters: Sioux City, IA, US · Health Care · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Optimist International
EIN 813275703 · Headquarters: SIOUX CITY, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Oromo Mutual Benefit Society of Siouxland
EIN 472372298 · Headquarters: Sioux City, IA, US · Human Services · Latest available filing year: 2014 · Primary form: IRS Form 990-N
- Orpheum Theatre Endowment Inc
EIN 460496569 · Headquarters: SIOUX CITY, IA, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990
- Orpheum Theatre Preservation Projectltd
EIN 421339054 · Headquarters: SIOUX CITY, IA, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990
- Parent Activity Committee of North Middle School
EIN 900429191 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N
- Parent Booster USA Inc
EIN 472071884 · Headquarters: Sioux City, IA, US · Education · Latest available filing year: 2019 · Primary form: IRS Form 990-N
- Parents Without Partners Inc
EIN 237320499 · Headquarters: sioux city, IA, US · Human Services · Latest available filing year: 2007 · Primary form: IRS Form 990-N
- Peace Makers Institute Inc
EIN 205240672 · Headquarters: Sioux City, IA, USA · Civil Rights, Social Action & Advocacy · Latest available filing year: 2025 · Primary form: IRS Form 990
- Perley Family Foundation
EIN 874043202 · Headquarters: SIOUX CITY, IA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- Perry V Haines Foundation C/o Karrie Hruska
EIN 421419738 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- Pflag Siouxland
EIN 464784572 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N
- Pheasant Acres Apartments Inc
EIN 421110664 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Pho Mon Buddhist Temple of Siouxland
EIN 421447851 · Headquarters: SIOUX CITY, IA, USA · Religion Related · Latest available filing year: 2024 · Primary form: IRS Form 990
- Plymouth County Board of Realtors
EIN 421142758 · Headquarters: Sioux City, IA, US · Community Improvement & Capacity Building · Latest available filing year: 2009 · Primary form: IRS Form 990-N
- Pms Club
EIN 237259434 · Headquarters: Sioux City, IA, US · Recreation & Sports · Latest available filing year: 2009 · Primary form: IRS Form 990-N
- Pokey & Colin Jensen Foundation
EIN 421193746 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- Port of Sioux City Rivercade Association
EIN 420937585 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990
- Powher Networking Group
EIN 822811147 · Headquarters: Sioux City, IA, US · Employment · Latest available filing year: 2020 · Primary form: IRS Form 990-N
- Prairie Haven Inc
EIN 470809171 · Headquarters: SIOUX CITY, IA, USA · Housing & Shelter · Latest available filing year: 2024 · Primary form: IRS Form 990
- Princess Sacajawea Chapter American Business Womens
EIN 421235452 · Headquarters: Sioux City, IA, US · Community Improvement & Capacity Building · Latest available filing year: 2017 · Primary form: IRS Form 990-N
- Professional Staff Assn of Area Education Agency 12
EIN 421103481 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Project Rehema Ministries Inc
EIN 208939880 · Headquarters: Sioux City, IA, USA · International, Foreign Affairs & National Security · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Psi Chi the National Honor Society in Psychology
EIN 521276064 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Psi Chi the National Honor Society in Psychology
EIN 521574833 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Pta Iowa Congress
EIN 426120221 · Headquarters: Sioux City, IA, US · Education · Latest available filing year: 2008 · Primary form: IRS Form 990-N
- Pta Iowa Congress
EIN 815412023 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N
- Pta Iowa Congress
EIN 830474450 · Headquarters: Sioux City, IA, US · Education · Latest available filing year: 2010 · Primary form: IRS Form 990-N
- Queen of Peace Inc
EIN 421292909 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Quota Club International Inc
EIN 426058452 · Headquarters: SIOUX CITY, IA, US · Recreation & Sports · Latest available filing year: 2020 · Primary form: IRS Form 990-N
- Raiders Youth Athletics
EIN 934847389 · Headquarters: Sioux City, IA, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990
- Reach Youth & Family Theatre
EIN 921501358 · Headquarters: SIOUX CITY, IA, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Red Sky Nation-mmir
EIN 332725363 · Headquarters: SIOUX CITY, IA, USA · Mental Health & Crisis Intervention · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Resilient Refugee Inc
EIN 394064278 · Headquarters: sioux city, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Retired Professional Fire Fighters of Sioux City Ia
EIN 421317369 · Headquarters: Sioux City, IA, US · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2008 · Primary form: IRS Form 990-N
- River City Anglers Inc
EIN 421264928 · Headquarters: SIOUX CITY, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Rl & Ethel Stubbs Scholarship Tr
EIN 421386035 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- Road Runners Club of America
EIN 421464393 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Ronald B and Joan B Krage Foundation
EIN 421497947 · Headquarters: SIOUX CITY, IA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- Ronald McDonald House Charities of Siouxland
EIN 421369988 · Headquarters: Sioux City, IA, USA · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990
- Ronald Oakley Barkl Mem Sch
EIN 426052774 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Rotary International
EIN 426120004 · Headquarters: Sioux City, IA, US · Community Improvement & Capacity Building · Latest available filing year: 2020 · Primary form: IRS Form 990-N
- Rotary International
EIN 476033725 · Headquarters: Sioux City, IA, US · Community Improvement & Capacity Building · Latest available filing year: 2016 · Primary form: IRS Form 990-N
- Royal Neighbors of America
EIN 420696161 · Headquarters: SIOUX CITY, IA, US · Mutual & Membership Benefit · Latest available filing year: 2013 · Primary form: IRS Form 990-N
- S C West High Foundation
EIN 202007038 · Headquarters: Sioux City, IA, US · Education · Latest available filing year: 2014 · Primary form: IRS Form 990-N
- Saders Inc Dba We Are Heelan Youth Athletics Inc
EIN 300086819 · Headquarters: SIOUX CITY, IA, USA · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Safeplace
EIN 421104234 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Samuel & Gussie Bernstein Foundation
EIN 421335958 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- Sanctuary Amd
EIN 993940304 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Sanford Center
EIN 420698174 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- Sanford Center Building Inc
EIN 426059970 · Headquarters: Sioux City, IA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Saturday in the Park Inc
EIN 421386202 · Headquarters: SIOUX CITY, IA, USA · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990
- Save the Airbase Chapel
EIN 843267088 · Headquarters: Sioux City, IA, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Scandinavian Societies Inc
EIN 420507907 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N
- Scms Travels
EIN 922041575 · Headquarters: SIOUX CITY, IA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- Sculpt Siouxland Inc
EIN 263893459 · Headquarters: SIOUX CITY, IA, USA · Arts, Culture & Humanities · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ
- Security National Bank Charitable Foundation
EIN 364063036 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- Serra International
EIN 421461979 · Headquarters: Sioux City, IA, US · Religion Related · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Sertoma Inc
EIN 426058394 · Headquarters: SIOUX CITY, IA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Sheer Family Memorial Education Foundation Inc
EIN 471800673 · Headquarters: SIOUX CITY, IA, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Shepherds Garden
EIN 272258821 · Headquarters: SIOUX CITY, IA, USA · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990
- Shesler Hall
EIN 420703244 · Headquarters: Sioux City, IA, USA · Human Services · Latest available filing year: 2023 · Primary form: IRS Form 990
- Shot in the Dark Productions
EIN 205392837 · Headquarters: Sioux City, IA, US · Arts, Culture & Humanities · Latest available filing year: 2019 · Primary form: IRS Form 990-N
- Showtime Hoopers Inc
EIN 471822395 · Headquarters: SIOUX CITY, IA, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Sigma Theta Tau International Inc
EIN 421284814 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Simple Life Inc
EIN 473280791 · Headquarters: SIOUX CITY, IA, USA · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990
- Sioux Center Community School Education Association
EIN 274416632 · Headquarters: SIOUX CITY, IA, US · Education · Latest available filing year: 2010 · Primary form: IRS Form 990-N