Nonprofits in Wisconsin
Nonprofits in Wisconsin. Browse 46,682 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
- Sigma Theta Tau Inc
EIN 391490392 · Headquarters: Shorewood, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Sigma Theta Tau Inc
EIN 391490393 · Headquarters: Oshkosh, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Sigma Theta Tau Inc
EIN 621092108 · Headquarters: Milwaukee, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Sigma Theta Tau International Inc
EIN 883505078 · Headquarters: Milwaukee, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Sigma Theta Tau International Inc
EIN 900266168 · Headquarters: Waukesha, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Sigma Theta Tau International Inc
EIN 900266171 · Headquarters: Fox Point, WI, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N
- Sigma Theta Tau International Inc
EIN 900487006 · Headquarters: Mequon, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Sigma Theta Tau International Inc
EIN 912039509 · Headquarters: La Crosse, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Signal Transparency
EIN 992542847 · Headquarters: Hudson, WI, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Signature Dance Co
EIN 202884576 · Headquarters: Milwaukee, WI, USA · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990
- Signing Student Association
EIN 200808824 · Headquarters: Milwaukee, WI, US · Unknown & Unclassified · Latest available filing year: 2008 · Primary form: IRS Form 990-N
- Signschool Inc
EIN 472664763 · Headquarters: Madison, WI, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Sikh Religious Society of Wisconsininc
EIN 391287835 · Headquarters: BROOKFIELD, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Sikh Society of Wisconsin
EIN 311660981 · Headquarters: MIDDLETON, WI, USA · Religion Related · Latest available filing year: 2024 · Primary form: IRS Form 990
- Sikh Temple of Wisconsin Inc
EIN 391928829 · Headquarters: OAK CREEK, WI, USA · Religion Related · Latest available filing year: 2024 · Primary form: IRS Form 990
- Silberg Center for Comparative Studies
EIN 237304907 · Headquarters: Bayside, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Silencer Soccer Club
EIN 611546966 · Headquarters: Eau Claire, WI, US · Recreation & Sports · Latest available filing year: 2012 · Primary form: IRS Form 990-N
- Silent Messengers
EIN 331519284 · Headquarters: Hammond, WI, US · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Silly Goat Farm
EIN 990410409 · Headquarters: Tomah, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Silver Birch Ranch Inc & Affiliate
EIN 363076658 · Headquarters: WHITE LAKE, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- Silver Circle Foundation
EIN 862256407 · Headquarters: OCONOMOWOC, WI, USA · Crime & Legal Related · Latest available filing year: 2023 · Primary form: IRS Form 990-PF
- Silver Cliff Fire and Rescue Auxiliary
EIN 272682061 · Headquarters: Silver Cliff, WI, US · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Silver Cliff Rescue Squad Inc
EIN 472184351 · Headquarters: ATHELSTANE, WI, USA · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2024 · Primary form: IRS Form 990
- Silver Creek Fire Department Inc
EIN 391871135 · Headquarters: MANITOWOC, WI, USA · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2025 · Primary form: IRS Form 990
- Silver Creek Riders Snowmobile Club
EIN 237368841 · Headquarters: WATERTOWN, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Silver Creek Sno-odders
EIN 392043829 · Headquarters: Rosendale, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Silver Creek Volunteer Fire Department Township of Sherman Inc
EIN 810587209 · Headquarters: Random Lake, WI, USA · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2024 · Primary form: IRS Form 990
- Silver Cross Circle of the Kings Daughters and Sons Inc
EIN 810573585 · Headquarters: Appleton, WI, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2016 · Primary form: IRS Form 990-N
- Silver Laces Figure Skating Club Inc
EIN 731667898 · Headquarters: MARSHFIELD, WI, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Silver Lake Association
EIN 010606618 · Headquarters: Cumberland, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Silver Lake Cemetery Association % David Bain
EIN 390615665 · Headquarters: PORTAGE, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Silver Lake College of the Holy Family Inc
EIN 390980974 · Headquarters: MANITOWOC, WI, USA · Education · Latest available filing year: 2018 · Primary form: IRS Form 990
- Silver Lake Intermediate School PTO
EIN 263088221 · Headquarters: Oconomowoc, WI, US · Education · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- Silver Lake Preservation Association Inc
EIN 461315497 · Headquarters: Laona, WI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Silver Lake Protective Assoc
EIN 396189101 · Headquarters: West Bend, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Silver Lake Rescue Squad Inc
EIN 391603275 · Headquarters: Silver Lake, WI, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N
- Silver Lake Sportsmans Club
EIN 392043869 · Headquarters: Silver Lake, WI, US · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Silver Lake Yacht Club Inc 5602 Peters Dr
EIN 391655136 · Headquarters: WEST BEND, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Silver Lining Foundation Inc
EIN 481255726 · Headquarters: MADISON, WI, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- Silver Lining Guardianship Inc
EIN 872601392 · Headquarters: OCONTO FALLS, WI, USA · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- Silver Lining Rescue and Rehabilitation
EIN 883495285 · Headquarters: Westfield, WI, USA · Animal Related · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ
- Silver M Club Inc
EIN 391421043 · Headquarters: Merrill, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Silver Saddles Ltd
EIN 753205045 · Headquarters: Lake Geneva, WI, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N
- Silver Spring Corporate Park Association Inc
EIN 391895885 · Headquarters: MENOMONEE FALLS, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Silver Spring Intermediate Home and School Ltd
EIN 842260798 · Headquarters: SUSSEX, WI, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Silver Spring Neighborhood Center Inc
EIN 390966281 · Headquarters: MILWAUKEE, WI, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990
- Silver Star Brands Foundation Inc
EIN 396075744 · Headquarters: OSHKOSH, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- Silverbrook Pto
EIN 811379352 · Headquarters: West Bend, WI, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Silvermoon Sanctuary Limited
EIN 882260309 · Headquarters: Rice Lake, WI, US · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Sima Foundation Inc
EIN 851447621 · Headquarters: MEQUON, WI, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Simeanna Apartments Inc
EIN 237148097 · Headquarters: OSHKOSH, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Simeanna Iii Inc
EIN 391270056 · Headquarters: OSHKOSH, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Simeanna South Inc
EIN 391238670 · Headquarters: OSHKOSH, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Simon of Cyrene Tabernacle No Xv
EIN 900811700 · Headquarters: OSHKOSH, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Simpl Housing
EIN 331357815 · Headquarters: Oak Creek, WI, US · Housing & Shelter · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Simple Faith Ministries Inc
EIN 822465814 · Headquarters: HIXTON, WI, USA · International, Foreign Affairs & National Security · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Simple Hope Corporation
EIN 272875953 · Headquarters: MENOMONEE FALLS, WI, USA · International, Foreign Affairs & National Security · Latest available filing year: 2025 · Primary form: IRS Form 990
- Simplicity and Allis-chalmers Garden Tractor Club
EIN 731671889 · Headquarters: Blue Mounds, WI, US · Recreation & Sports · Latest available filing year: 2007 · Primary form: IRS Form 990-N
- Simplicity Credit Union
EIN 390860994 · Headquarters: Marshfield, WI, US · Public & Societal Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990
- SimplifyInc
EIN 811526973 · Headquarters: Sheboygan, WI, USA · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990
- Simply Giving Co
EIN 882509886 · Headquarters: MAYVILLE, WI, US · Youth Development · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Simply Helping People Inc
EIN 831998897 · Headquarters: Oconomowoc, WI, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Simpson Street Free Press Inc
EIN 391882258 · Headquarters: MONONA, WI, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990
- Singing Men of Central Wisconsin Inc
EIN 261724249 · Headquarters: Merrimac, WI, US · Arts, Culture & Humanities · Latest available filing year: 2015 · Primary form: IRS Form 990-N
- Singing Rooster Inc
EIN 271184568 · Headquarters: Hager City, WI, USA · International, Foreign Affairs & National Security · Latest available filing year: 2024 · Primary form: IRS Form 990
- Sinissippi Review
EIN 884176448 · Headquarters: hustisford, WI, US · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Sinissippi Trail Hawks Inc
EIN 237439037 · Headquarters: Hustisford, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Sinsinawa Dominicans Inc
EIN 390816854 · Headquarters: SINSINAWA, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-T
- Sinsinawa Housing Inc
EIN 391950325 · Headquarters: SINSINAWA, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Sinsinawa Nursing Inc
EIN 391958028 · Headquarters: WATERTOWN, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Siochaint Montessori School of Manitowoc and Sheboygan Inc
EIN 364571916 · Headquarters: Manitowoc, WI, US · Education · Latest available filing year: 2007 · Primary form: IRS Form 990-N
- Siren Ball Park Inc
EIN 203470253 · Headquarters: Siren, WI, USA · Recreation & Sports · Latest available filing year: 2017 · Primary form: IRS Form 990-EZ
- Siren Chamber of Commerce Inc
EIN 391463454 · Headquarters: SIREN, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Siren Education Association
EIN 391544461 · Headquarters: MADISON, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Siren Education Support Professionals
EIN 262904695 · Headquarters: MADISON, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Siren Senior Center Inc
EIN 391265162 · Headquarters: Siren, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Siren Softball Inc
EIN 331927882 · Headquarters: Cottage Grove, WI, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Sirenity Social Services
EIN 874671112 · Headquarters: MILWAUKEE, WI, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Siri Strong
EIN 993831192 · Headquarters: EXELAND, WI, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Siron Foundation Co Jeffrey Sartell
EIN 396508464 · Headquarters: Whitewater, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- Sirona Recovery Inc
EIN 391246685 · Headquarters: MILWAUKEE, WI, USA · Mental Health & Crisis Intervention · Latest available filing year: 2024 · Primary form: IRS Form 990
- Sisi Ni Inc
EIN 392796541 · Headquarters: Eau Claire, WI, US · International, Foreign Affairs & National Security · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Sist Inc
EIN 473174373 · Headquarters: GREEN BAY, WI, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990
- Sista 2 Sista Global Outreach Ministry Inc
EIN 883838074 · Headquarters: New Berlin, WI, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Sista Luv
EIN 820976041 · Headquarters: milwaukee, WI, US · Youth Development · Latest available filing year: 2021 · Primary form: IRS Form 990-N
- Sistar Society Academy of Excellence Inc
EIN 874154153 · Headquarters: Appleton, WI, US · Youth Development · Latest available filing year: 2021 · Primary form: IRS Form 990-N
- Sister Bay Advancement Association Inc
EIN 390888403 · Headquarters: SISTER BAY, WI, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990
- Sister Bay and Liberty Grove
EIN 391825354 · Headquarters: SISTER BAY, WI, USA · Health Care · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Sister Bay Historical Society Inc
EIN 611436554 · Headquarters: Sister Bay, WI, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990
- Sister Bay Lions Foundation Inc
EIN 472394277 · Headquarters: Sister Bay, WI, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Sister Cities Association of Kenosha Wisconsin Inc
EIN 391836285 · Headquarters: Kenosha, WI, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Sister Claire Marie Wick-triniteam Foundation Inc
EIN 391577314 · Headquarters: Eau Claire, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Sister House Inc
EIN 261857765 · Headquarters: Madison, WI, US · Human Services · Latest available filing year: 2021 · Primary form: IRS Form 990-N
- Sister Mary Yvonne Jenn Educational Trust Fund
EIN 391392928 · Headquarters: Milwaukee, WI, US · Education · Latest available filing year: 2014 · Primary form: IRS Form 990-N
- Sister Servants of Christ the King Inc
EIN 391022770 · Headquarters: MOUNT CALVARY, WI, USA · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990
- Sister Stephanie Speaks
EIN 841789275 · Headquarters: Milwaukee, WI, US · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Sisterhood Wellness Inc
EIN 874137637 · Headquarters: Sheboygan, WI, US · Human Services · Latest available filing year: 2021 · Primary form: IRS Form 990-N
- Sisters 4 Cure
EIN 470971076 · Headquarters: Milwaukee, WI, US · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2017 · Primary form: IRS Form 990-N
- Sisters Can Survive
EIN 834510082 · Headquarters: Milwaukee, WI, US · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Sisters Club Chicago Nfp
EIN 272999666 · Headquarters: MILWAUKEE, WI, US · Human Services · Latest available filing year: 2023 · Primary form: IRS Form 990-N