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
- Stephen J Friedler Memorial Scholarship Inc
EIN 882798827 · Headquarters: Cheshire, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Stephen P and Lisa a Lawrence Private Foundation
EIN 316677115 · Headquarters: SHELTON, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- Stepney Parent Teacher Organization
EIN 061071808 · Headquarters: MONROE, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Stepney Volunteer Fire Company #1 of Ct
EIN 066051565 · Headquarters: MONROE, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Stepping Forward Inc
EIN 452515818 · Headquarters: Hartford, CT, US · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Stepping Into Prosperity
EIN 933893281 · Headquarters: Woodbridge, CT, USA · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Stepping Stones Museum for Children Inc
EIN 223199269 · Headquarters: NORWALK, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990
- Stepping Stones Support Corporation
EIN 272860668 · Headquarters: NORWALK, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990
- Steps Beyond Remediation Inc
EIN 811453425 · Headquarters: Waterbury, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- STEPS Inc
EIN 800193566 · Headquarters: Groton, CT, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990
- Stepup Ed Inc
EIN 922820273 · Headquarters: Hamden, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- Sterling Care Foundation Inc
EIN 822684838 · Headquarters: Greenwich, CT, US · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Sterling Community School Parent-teacher Organization Inc
EIN 834097818 · Headquarters: Sterling, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Sterling Farms Men S Club Llc
EIN 061501330 · Headquarters: Stamford, CT, USA · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Sterling Farms Womens Golf Club Inc
EIN 061107345 · Headquarters: STAMFORD, CT, US · Recreation & Sports · Latest available filing year: 2019 · Primary form: IRS Form 990-N
- Sterling House Community Center Inc
EIN 060665192 · Headquarters: STRATFORD, CT, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990
- Sterling Opera House Restoration
EIN 994879722 · Headquarters: West Haven, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Sterling Road Association Inc
EIN 061260521 · Headquarters: Greenwich, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Sterling Ski Club Inc
EIN 061099438 · Headquarters: STRATFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Sterling Volunteer Fire Company Inc
EIN 222473967 · Headquarters: Sterling, CT, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N
- Steven & Alexandra Cohen Foundation Inc
EIN 061627638 · Headquarters: STAMFORD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- Steven & Sharon Chrust Foundation Inc
EIN 223596127 · Headquarters: STAMFORD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2012 · Primary form: IRS Form 990-PF
- Steven C Klausner Charitable Trust
EIN 836745616 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- Steven Heights Engine Co 5
EIN 066049757 · Headquarters: WEST HAVEN, CT, USA · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2018 · Primary form: IRS Form 990-EZ
- Steven Sylvester Scholarship Fund
EIN 843023709 · Headquarters: HARWINTON, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Stevens Stockings Inc
EIN 862897660 · Headquarters: Bolton, CT, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Stevenson Volunteer Fire Company
EIN 066055850 · Headquarters: Monroe, CT, USA · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2025 · Primary form: IRS Form 990
- Stew Leonard Iii Water Safety Fd Inc
EIN 223264276 · Headquarters: NORWALK, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Stewart Foundation
EIN 136162897 · Headquarters: NEW CANAAN, CT, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-PF
- Sticks for Soldiers Inc
EIN 460962202 · Headquarters: Fairfield, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990
- Still Mountain Center Inc
EIN 061514391 · Headquarters: SOUTH KENT, CT, US · Arts, Culture & Humanities · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- Still Responding Firefighter Cancer Awareness
EIN 934937419 · Headquarters: Milford, CT, US · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Still Standing Ministries
EIN 851649246 · Headquarters: Bridgeport, CT, US · Religion Related · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Stillman Foundation Inc
EIN 061108752 · Headquarters: Stamford, CT, USA · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-PF
- Stir Up the Gift Institute
EIN 814355890 · Headquarters: Middletown, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2018 · Primary form: IRS Form 990-N
- Stirrup Fun Stables Rescue Inc
EIN 811218336 · Headquarters: LEBANON, CT, USA · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Stm Elderly Housing Corporation
EIN 061336149 · Headquarters: HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Stockder Henry H Trust
EIN 066033459 · Headquarters: WATERBURY, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- Stockder Zerline H
EIN 066080669 · Headquarters: WATERBURY, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- Stoeckel E B Residue Co Trustee 213-099008547454
EIN 060653108 · Headquarters: WINSTED, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Stone Chiropractic Baseball Camp
EIN 208427071 · Headquarters: GLASTONBURY, CT, USA · Recreation & Sports · Latest available filing year: 2015 · Primary form: IRS Form 990-EZ
- Stone Church & Meetinghouse Foundation Inc
EIN 993393940 · Headquarters: New Preston, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Stone Point Capital Foundation Inc
EIN 061591956 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- Stone Soup Inc
EIN 061466438 · Headquarters: West Cornwall, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Stonecrest Beach Club Inc
EIN 061458938 · Headquarters: Marlborough, CT, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Stonefield Hollow Homeowners Association Inc
EIN 113723325 · Headquarters: Woodbury, CT, US · Housing & Shelter · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Stoner Drive Social Club Inc
EIN 334782187 · Headquarters: West Hartford, CT, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Stoneridge Residents Association
EIN 830439893 · Headquarters: MYSTIC, CT, USA · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990
- Stonewell Farms Inc
EIN 332984875 · Headquarters: Easton, CT, US · Animal Related · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Stonington Borough Volunteer Fire Company Inc
EIN 465353944 · Headquarters: Stonington, CT, US · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Stonington Cemetery Association Foundation
EIN 333091108 · Headquarters: STONINGTON, CT, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Stonington Cemetery Association Inc
EIN 060775074 · Headquarters: STONINGTON, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- Stonington Community Center Inc
EIN 060665193 · Headquarters: STONINGTON, CT, USA · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990
- Stonington Community Rowing Inc
EIN 844915816 · Headquarters: STONINGTON, CT, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990
- Stonington Country Club Inc
EIN 061272803 · Headquarters: Stonington, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Stonington Education Fund Inc
EIN 061421749 · Headquarters: PAWCATUCK, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Stonington Football Athletic Club
EIN 460700475 · Headquarters: Pawcatuck, CT, US · Recreation & Sports · Latest available filing year: 2016 · Primary form: IRS Form 990-N
- Stonington Football Club Inc
EIN 853791242 · Headquarters: Pawcatuck, CT, US · Youth Development · Latest available filing year: 2022 · Primary form: IRS Form 990-N
- Stonington Harbor Yacht Club Incorporated
EIN 371431278 · Headquarters: STONINGTON, CT, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990
- Stonington High School Athletic Hall of Fame Inc
EIN 830862194 · Headquarters: PAWCATUCK, CT, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Stonington High School Drama Boosters Inc
EIN 412546115 · Headquarters: PAWCATUCK, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Stonington High School Graduates Scholarship Fund Inc
EIN 205647973 · Headquarters: Mystic, CT, US · Education · Latest available filing year: 2016 · Primary form: IRS Form 990-N
- Stonington Historical Society Inc
EIN 060966415 · Headquarters: STONINGTON, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2023 · Primary form: IRS Form 990
- Stonington Land Trust Inc
EIN 412228108 · Headquarters: STONINGTON, CT, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990
- Stonington Little League
EIN 222590779 · Headquarters: Pawcatuck, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Stonington Middle School Pto
EIN 873598412 · Headquarters: Pawcatuck, CT, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Stonington Music Boosters Incorporated
EIN 061274582 · Headquarters: PAWCATUCK, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Stonington Odd Fellows Corporation
EIN 472803212 · Headquarters: MYSTIC, CT, USA · Civil Rights, Social Action & Advocacy · Latest available filing year: 2025 · Primary form: IRS Form 990
- Stonington Small Boat Association Inc
EIN 222574168 · Headquarters: Stonington, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Stonington Soccer International Inc
EIN 472008212 · Headquarters: Stonington, CT, US · Recreation & Sports · Latest available filing year: 2021 · Primary form: IRS Form 990-N
- Stonington Soccer Tournament Comp
EIN 921753914 · Headquarters: STONINGTON, CT, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Stonington Tricentennial Scholarship Fund
EIN 066038419 · Headquarters: Stonington, CT, US · Education · Latest available filing year: 2015 · Primary form: IRS Form 990-N
- Stonington Village Improvement Assoc Inc
EIN 061259940 · Headquarters: Stonington, CT, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990
- Stonington Volunteer Ambulance Corps Inc
EIN 060985677 · Headquarters: Stonington, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Stonington Youth Football League
EIN 060946766 · Headquarters: Pawcatuck, CT, US · Recreation & Sports · Latest available filing year: 2020 · Primary form: IRS Form 990-N
- Stoningtonsourced
EIN 842877387 · Headquarters: Stonington, CT, US · Food, Agriculture & Nutrition · Latest available filing year: 2021 · Primary form: IRS Form 990-N
- Stony Creek Fife & Drum Corps Inc
EIN 061008144 · Headquarters: STONY CREEK, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990
- Stony Creek Quarry Workers Celebration Inc
EIN 061548431 · Headquarters: Branford, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Stony Creek Singers
EIN 920284864 · Headquarters: Branford, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Stony Hill Preserve Inc
EIN 820657642 · Headquarters: HAWLEYVILLE, CT, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Stony Hill Volunteer Fire Company Inc
EIN 061184883 · Headquarters: BETHEL, CT, USA · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2024 · Primary form: IRS Form 990
- Stop Killing Women INC
EIN 873812325 · Headquarters: Voluntown, CT, USA · Human Services · Latest available filing year: 2021 · Primary form: IRS Form 990-EZ
- Stop the Silence
EIN 831333145 · Headquarters: STRATFORD, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Stories Connect Fairfield County Inc
EIN 332256410 · Headquarters: Fairfield, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Stories of Data Inc
EIN 932986371 · Headquarters: Woodbridge, CT, US · Education · Latest available filing year: 2022 · Primary form: IRS Form 990-N
- Storm Engine Co No 2
EIN 061260833 · Headquarters: Derby, CT, US · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2009 · Primary form: IRS Form 990-N
- Storm Engine Company Ambulance Corp
EIN 066078118 · Headquarters: Derby, CT, USA · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990
- Storper Foundation C/o Sarah Field
EIN 116502064 · Headquarters: WEST HARTFORD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- Storrs Cemetery Association Inc
EIN 066040576 · Headquarters: Willimantic, CT, USA · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990
- Storyline Inc
EIN 474894592 · Headquarters: Windham, CT, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Straight Ahead Music Foundation In
EIN 920732870 · Headquarters: Avon, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Straight Caribbean Spine Foundation
EIN 161770004 · Headquarters: NORWALK, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Straightline Racing Inc
EIN 332993777 · Headquarters: CLINTON, CT, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Strategic Business Alliance Inc C/o Steven J Samela
EIN 814526147 · Headquarters: STAMFORD, CT, USA · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Stratfield Fund
EIN 066046672 · Headquarters: ORANGE, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- Stratfield Historic District Association Inc
EIN 061402091 · Headquarters: BRIDGEPORT, CT, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Stratfield Village Association Inc
EIN 384040144 · Headquarters: Fairfield, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Stratfield Vol F D Emergency Rescue 15
EIN 510201146 · Headquarters: FAIRFIELD, CT, US · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2022 · Primary form: IRS Form 990-N
- Stratford Administrators Association Inc
EIN 061635135 · Headquarters: Stratford, CT, US · Employment · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Stratford Alliance for Innovative Learning Inc
EIN 454822351 · Headquarters: Stratford, CT, US · Arts, Culture & Humanities · Latest available filing year: 2014 · Primary form: IRS Form 990-N