Nonprofits in Connecticut
Nonprofits in Connecticut. Browse 26,993 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
- Stamford Partnership Inc
EIN 060993590 · Headquarters: STAMFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Stamford Peace Youth Foundation Inc
EIN 271254631 · Headquarters: STAMFORD, CT, USA · Youth Development · Latest available filing year: 2023 · Primary form: IRS Form 990
- Stamford Photography Club
EIN 472232462 · Headquarters: WESTON, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Stamford Police Association Inc
EIN 066069059 · Headquarters: Stamford, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Stamford Police Foundation Inc
EIN 161780390 · Headquarters: Stamford, CT, US · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Stamford Polish Saturday School Inc
EIN 933840229 · Headquarters: STAMFORD, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990
- Stamford Pride
EIN 861686387 · Headquarters: Stamford, CT, US · Civil Rights, Social Action & Advocacy · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Stamford Professional Fire Fighters Char
EIN 333441974 · Headquarters: Stamford, CT, USA · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Stamford Public Education Foundation Inc
EIN 061462359 · Headquarters: STAMFORD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990
- Stamford Rotary Trust Fund
EIN 066068805 · Headquarters: STAMFORD, CT, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990
- Stamford Rugby Club Inc
EIN 884393236 · Headquarters: Norwalk, CT, US · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Stamford Sailing Foundation Inc
EIN 320684986 · Headquarters: DARIEN, CT, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Stamford Schola Gregoriana Inc
EIN 061575875 · Headquarters: Stamford, CT, US · Arts, Culture & Humanities · Latest available filing year: 2007 · Primary form: IRS Form 990-N
- Stamford School Readiness Foundation Inc
EIN 061506924 · Headquarters: Stamford, CT, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Stamford Senior Centerinc
EIN 061456561 · Headquarters: STAMFORD, CT, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990
- Stamford South End Neighborhood Revitalization Zone Inc
EIN 061566797 · Headquarters: STAMFORD, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Stamford Spartans Youth Football Inc
EIN 862019554 · Headquarters: STAMFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Stamford Spinnakers Inc
EIN 061608703 · Headquarters: STAMFORD, CT, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Stamford St Andrew's - the Ferguson Tr C/o the Episcopal Church in Connecticut
EIN 066041829 · Headquarters: MERIDEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Stamford Superkings Cricket Club Inc
EIN 921547114 · Headquarters: Darien, CT, US · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Stamford Trees Foundation Incorporated
EIN 061316901 · Headquarters: stamford, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2018 · Primary form: IRS Form 990-N
- Stamford Troy Softball Inc
EIN 834521656 · Headquarters: STAMFORD, CT, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Stamford Veterans Park Partnership Inc
EIN 822612199 · Headquarters: STAMFORD, CT, USA · Public & Societal Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990
- Stamford West Side Neighborhood Revitalization Zone Inc
EIN 260878158 · Headquarters: STAMFORD, CT, USA · Community Improvement & Capacity Building · Latest available filing year: 2012 · Primary form: IRS Form 990-EZ
- Stamford Woman's Club Inc
EIN 060653184 · Headquarters: STAMFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- Stamford Womens Golf Assn Inc
EIN 833529333 · Headquarters: STAMFORD, CT, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N
- Stamford Yacht Club
EIN 060547390 · Headquarters: STAMFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Stamford Youth Foundation Inc
EIN 260003565 · Headquarters: Stamford, CT, USA · Recreation & Sports · Latest available filing year: 2019 · Primary form: IRS Form 990-EZ
- Stamford Youth Hockey Assoc Inc
EIN 061477006 · Headquarters: STAMFORD, CT, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990
- Stamford Youth Soccer League
EIN 061004370 · Headquarters: GREENWICH, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Stamford Youth Tennis Academy Inc C/o Cremin
EIN 472460170 · Headquarters: STAMFORD, CT, USA · Recreation & Sports · Latest available filing year: 2018 · Primary form: IRS Form 990-EZ
- Stand Tall
EIN 061506173 · Headquarters: WATERFORD, CT, USA · Youth Development · Latest available filing year: 2012 · Primary form: IRS Form 990-PF
- Stand Together Against Racism Inc
EIN 861973341 · Headquarters: New Canaan, CT, US · Civil Rights, Social Action & Advocacy · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- Standard Education
EIN 061355664 · Headquarters: Waterbury, CT, US · Education · Latest available filing year: 2014 · Primary form: IRS Form 990-N
- Standard of Patriotism
EIN 475203095 · Headquarters: Danbury, CT, US · Arts, Culture & Humanities · Latest available filing year: 2016 · Primary form: IRS Form 990-N
- Standing Room Only Productions Inc
EIN 472538689 · Headquarters: SOMERS, CT, US · Arts, Culture & Humanities · Latest available filing year: 2018 · Primary form: IRS Form 990-N
- Standup4health Inc
EIN 833821292 · Headquarters: NEW MILFORD, CT, US · Health Care · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Stanley and Catherine Maas Foundati
EIN 112690167 · Headquarters: WESTPORT, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- Stanley L Richter Association for the Arts Inc
EIN 237102777 · Headquarters: Danbury, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Stanley Senior Charitable Foundation Inc
EIN 061417500 · Headquarters: NEW BRITAIN, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2022 · Primary form: IRS Form 990-PF
- Stanton-davis Homestand Museum Inc
EIN 200795991 · Headquarters: PAWCATUCK, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990
- Stanwich Club Inc Supplemental Unemploym Benefits Plan & Trust
EIN 846701488 · Headquarters: GREENWICH, CT, USA · Mutual & Membership Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Staples Academy Foundation Inc
EIN 332207462 · Headquarters: Easton, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Staples Boys Lax Boosters Inc
EIN 333067677 · Headquarters: Westport, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Staples Boys Soccer Foundation Inc C/o Jason Epstein
EIN 993453496 · Headquarters: WESTPORT, CT, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Staples Diamond Club Inc
EIN 202189065 · Headquarters: WESTPORT, CT, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Staples Free School Trust
EIN 066038707 · Headquarters: Easton, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- Staples Girls Basketball Association
EIN 332231098 · Headquarters: Westport, CT, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Staples High School Pta C/o Michelle Macris
EIN 060994415 · Headquarters: WESTPORT, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Staples High School Tuition Grants Committee Inc
EIN 510182993 · Headquarters: WESTPORT, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990
- Staples HS Girls Lacrosse Booster Club Inc
EIN 850719036 · Headquarters: Westport, CT, USA · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Staples Lacrosse
EIN 870781752 · Headquarters: Westport, CT, US · Recreation & Sports · Latest available filing year: 2018 · Primary form: IRS Form 990-N
- Staples Matmen Club
EIN 842084728 · Headquarters: Westport, CT, US · Recreation & Sports · Latest available filing year: 2019 · Primary form: IRS Form 990-N
- Staples Music Parents Association
EIN 272200940 · Headquarters: Westport, CT, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Staples Players Boosters Inc
EIN 862667796 · Headquarters: WESTPORT, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Staples Softball Booster Club
EIN 900672049 · Headquarters: westport, CT, US · Unknown & Unclassified · Latest available filing year: 2013 · Primary form: IRS Form 990-N
- Staples Softball Booster Club Inc
EIN 823203473 · Headquarters: Westport, CT, US · Youth Development · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Star Foundation Inc
EIN 061368773 · Headquarters: NORWALK, CT, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990
- Star Inc - Lighting the Way
EIN 060726489 · Headquarters: NORWALK, CT, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990
- Star Lymphedema Network Inc
EIN 208402868 · Headquarters: Prospect, CT, US · Health Care · Latest available filing year: 2015 · Primary form: IRS Form 990-N
- Starbuck Foundation
EIN 823401118 · Headquarters: Terryville, CT, USA · Youth Development · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Starelief and Pet Assistance Inc
EIN 454536373 · Headquarters: West Haven, CT, US · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Starfish Connection Inc
EIN 262410124 · Headquarters: Stamford, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Starfish Continuum Inc
EIN 873781077 · Headquarters: STAMFORD, CT, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Starfishgirl Anti-stalking Campaign Inc
EIN 205346241 · Headquarters: Guilford, CT, US · Crime & Legal Related · Latest available filing year: 2016 · Primary form: IRS Form 990-N
- Starfleet Uss Charter Oak Club
EIN 922781890 · Headquarters: New London, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Starlings Greater Hartford
EIN 854125053 · Headquarters: Bristol, CT, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Starr Burying Ground Association
EIN 066037723 · Headquarters: Groton, CT, USA · Mutual & Membership Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990
- Starr Family Foundation
EIN 133985297 · Headquarters: FAIRFIELD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2012 · Primary form: IRS Form 990-PF
- Stars to Stem Inc
EIN 611874338 · Headquarters: Niantic, CT, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Starship Dance Theater and Company
EIN 061402168 · Headquarters: Guilford, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Start Fresh Inc
EIN 371826727 · Headquarters: New London, CT, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Start the Outreach Promise Inc
EIN 813997318 · Headquarters: Hamden, CT, US · Human Services · Latest available filing year: 2021 · Primary form: IRS Form 990-N
- Start with the Arts Ltd
EIN 421586455 · Headquarters: Newington, CT, US · Youth Development · Latest available filing year: 2013 · Primary form: IRS Form 990-N
- Startl Inc
EIN 271215156 · Headquarters: Litchfield, CT, US · Youth Development · Latest available filing year: 2019 · Primary form: IRS Form 990-N
- StartUp Westport Inc
EIN 934193938 · Headquarters: Westport, CT, USA · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- State Condo Management Inc
EIN 470938125 · Headquarters: NEW HAVEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- State Officers and Regents Club
EIN 842993534 · Headquarters: Kent, CT, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- State Onsite Regulators Association
EIN 813552365 · Headquarters: Glastonbury, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- State Police Credit Union
EIN 060762028 · Headquarters: MERIDEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- State Street Debating Society Ltd
EIN 320234382 · Headquarters: Stamford, CT, USA · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Statewide Legal Services of Connecticut Inc
EIN 061445097 · Headquarters: WETHERSFIELD, CT, USA · Crime & Legal Related · Latest available filing year: 2024 · Primary form: IRS Form 990
- Statistical Patient Input Inc
EIN 061460448 · Headquarters: NORFOLK, CT, USA · Science & Technology · Latest available filing year: 2018 · Primary form: IRS Form 990-PF
- Stay at Home in Wilton Inc
EIN 271051446 · Headquarters: Wilton, CT, USA · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990
- Staying Put in New Canaan Inc
EIN 208465004 · Headquarters: NEW CANAAN, CT, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990
- StayWell Health Center
EIN 223160873 · Headquarters: Waterbury, CT, US · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990
- Steam Train Inc
EIN 824428144 · Headquarters: Middletown, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Steamboat Foundation Inc
EIN 412114837 · Headquarters: GREENWICH, CT, USA · Education · Latest available filing year: 2022 · Primary form: IRS Form 990-PF
- Steep Rock Arts Association Co C/o Erika Klauer
EIN 203065933 · Headquarters: GREENWICH, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- Steep Rock Association Inc
EIN 066069060 · Headquarters: WASHINGTON DEPOT, CT, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990
- Steeple Chase Farm Foundation
EIN 261572254 · Headquarters: Greenwich, CT, USA · Recreation & Sports · Latest available filing year: 2015 · Primary form: IRS Form 990-PF
- Stem Education Lifeline Inc
EIN 871118877 · Headquarters: WEST HARTFORD, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- STEM Leadership Center Inc
EIN 462931043 · Headquarters: STAMFORD, CT, USA · Education · Latest available filing year: 2025 · Primary form: IRS Form 990
- Stemist
EIN 852207622 · Headquarters: East Hartford, CT, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Step by Step Foundation Inc
EIN 850777212 · Headquarters: Waterbury, CT, US · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Step for a Cause Inc
EIN 861691969 · Headquarters: WESTPORT, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Stephen & Denise Adams Charitable Trust % Denise Adams
EIN 436917169 · Headquarters: SOUTHBURY, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- Stephen & Denise Adams Family Foundation % Denise Adams
EIN 770469328 · Headquarters: SOUTHBURY, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- Stephen and Adrienne Reedy Fmly Fnd
EIN 261638737 · Headquarters: WILTON, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2015 · Primary form: IRS Form 990-PF
- Stephen F Gabriel Memorial Fund
EIN 261659829 · Headquarters: Waterbury, CT, US · Medical Research · Latest available filing year: 2025 · Primary form: IRS Form 990-N