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
- Friends of the Middlebury Public Library Inc
EIN 815213395 · Headquarters: Middlebury, CT, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N
- Friends of the Milford Public Library Inc
EIN 061048755 · Headquarters: MILFORD, CT, USA · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Friends of the Mission Clinic of Our Lady of Guadalupe Inc
EIN 660676458 · Headquarters: Old Saybrook, CT, US · Health Care · Latest available filing year: 2016 · Primary form: IRS Form 990-N
- Friends of the Montessori Research Collective Inc
EIN 334180626 · Headquarters: Enfield, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Friends of the Mystic & Noank Library Inc
EIN 822965879 · Headquarters: Mystic, CT, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Friends of the New Britain Public Library
EIN 061179751 · Headquarters: NEW BRITAIN, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Friends of the New Fairfield Library Inc
EIN 222888182 · Headquarters: New Fairfield, CT, US · Education · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- Friends of the New Haven Animal Shelter
EIN 061626182 · Headquarters: NEW HAVEN, CT, USA · Animal Related · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Friends of the New Haven Free Public Library Inc
EIN 061295530 · Headquarters: New Haven, CT, US · Education · Latest available filing year: 2009 · Primary form: IRS Form 990-N
- Friends of the North Haven Library
EIN 060993463 · Headquarters: North Haven, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Friends of the Northend Senior Center
EIN 271592137 · Headquarters: Hartford, CT, US · Human Services · Latest available filing year: 2017 · Primary form: IRS Form 990-N
- Friends of the Norwalk Islands Inc
EIN 272892165 · Headquarters: Norwalk, CT, US · Environment · Latest available filing year: 2011 · Primary form: IRS Form 990-N
- Friends of the Norwalk Museum Inc C/o Scott Gibson
EIN 061000630 · Headquarters: NORWALK, CT, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Friends of the Norwalk Public Library System Inc
EIN 222567933 · Headquarters: New Milford, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Friends of the Norwalk River Valley Trail Inc
EIN 451496672 · Headquarters: Georgetown, CT, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990
- Friends of the Office of State Archaeology Inc
EIN 061489624 · Headquarters: East Hartford, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Friends of the Oswegatchie Hills Nature Preserve Inc
EIN 061632142 · Headquarters: NIANTIC, CT, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Friends of the Pinney House Inc
EIN 455603105 · Headquarters: Ellington, CT, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Friends of the Plainville Public Library Inc
EIN 061425912 · Headquarters: Plainville, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Friends of the Pomfret Public Library
EIN 208506164 · Headquarters: Pomfret, CT, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Friends of the Portland Library
EIN 061482457 · Headquarters: Portland, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Friends of the Preston Public Library
EIN 760826538 · Headquarters: PRESTON, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Friends of the Prospect Public Library Inc
EIN 814881967 · Headquarters: Prospect, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Friends of the Public Library of New London Inc
EIN 271308935 · Headquarters: New London, CT, US · Education · Latest available filing year: 2019 · Primary form: IRS Form 990-N
- Friends of the Public Library The
EIN 061526678 · Headquarters: TERRYVILLE, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Friends of the Putnam Public Library Inc
EIN 272272271 · Headquarters: Putnam, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Friends of the Raymond Library
EIN 320395237 · Headquarters: Oakdale, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Friends of the Ridgefield Library
EIN 060933081 · Headquarters: RIDGEFIELD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Friends of the River
EIN 300274197 · Headquarters: Durham, CT, US · Environment · Latest available filing year: 2007 · Primary form: IRS Form 990-N
- Friends of the Riverside Cemetery Inc
EIN 841989959 · Headquarters: WATERBURY, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Friends of the Rocky Hill Library
EIN 932744164 · Headquarters: Rocky Hill, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Friends of the Roxbury Library Inc
EIN 061286246 · Headquarters: Roxbury, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Friends of the Roxbury Senior Center Inc
EIN 201584376 · Headquarters: Roxbury, CT, US · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Friends of the Salem Free Public Library Inc
EIN 061331652 · Headquarters: SALEM, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Friends of the Salisbury Community Dog Park
EIN 475554966 · Headquarters: Salisbury, CT, US · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Friends of the Sandy Hook Permanent Memorial Inc
EIN 333923092 · Headquarters: Sandy Hook, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Friends of the Saxton B Little Free Library Inc
EIN 455134557 · Headquarters: COLUMBIA, CT, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Friends of the Scoville Memorial Library
EIN 352201905 · Headquarters: Salisburay, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Friends of the Senior Center
EIN 510525183 · Headquarters: Sherman, CT, US · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Friends of the Senior Sunshine Center of New Fairfield
EIN 061490733 · Headquarters: New Fairfield, CT, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Friends of the Shelton Animal Shelter Inc
EIN 061461072 · Headquarters: SHELTON, CT, US · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Friends of the Shelton Libraries Inc
EIN 263917225 · Headquarters: Shelton, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Friends of the Shetucket River Valley
EIN 455519808 · Headquarters: Baltic, CT, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Friends of the Silas Bronson Library
EIN 237339733 · Headquarters: Waterbury, CT, US · Education · Latest available filing year: 2015 · Primary form: IRS Form 990-N
- Friends of the Simsbury Public Library
EIN 237288807 · Headquarters: Simsbury, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Friends of the Somers Library
EIN 261313451 · Headquarters: Somers, CT, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Friends of the South Windsor Public Library
EIN 060999312 · Headquarters: South Windsor, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Friends of the Southbury Dog Park Inc
EIN 272941944 · Headquarters: Southbury, CT, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Friends of the Southbury Public Library Inc
EIN 237052525 · Headquarters: Southbury, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Friends of the Southington Public Library Inc
EIN 222974144 · Headquarters: Southington, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Friends of the Stafford Library Association
EIN 061514881 · Headquarters: Stafford Springs, CT, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Friends of the Thomaston Opera House Inc
EIN 371608158 · Headquarters: THOMASTON, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990
- Friends of the Thomaston Public Library Inc
EIN 066109856 · Headquarters: Thomaston, CT, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Friends of the Thompson Public Library Inc
EIN 061354531 · Headquarters: THOMPSON, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Friends of the Tolland Public Library
EIN 061048668 · Headquarters: Tolland, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Friends of the Trumbull High School Choirs Inc
EIN 273557236 · Headquarters: Trumbull, CT, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Friends of the Trumbull Library
EIN 237098043 · Headquarters: Trumbull, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Friends of the Valley Railroad Inc
EIN 061323607 · Headquarters: Essex, CT, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Friends of the Voluntown Library Inc
EIN 061466095 · Headquarters: Voluntown, CT, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Friends of the Wallace Center Inc
EIN 273277645 · Headquarters: Greenwich, CT, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990
- Friends of the Wallingford Animal Shelter
EIN 872057506 · Headquarters: Wallingford, CT, US · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Friends of the Waterbury Greenway Inc
EIN 273046963 · Headquarters: Waterbury, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Friends of the Watertown Library Association Inc
EIN 061273426 · Headquarters: WATERTOWN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Friends of the Wells-turner Mem Library Inc
EIN 237299366 · Headquarters: Glastonbury, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Friends of the West Hartford Public Library
EIN 510186433 · Headquarters: West Hartford, CT, US · Education · Latest available filing year: 2018 · Primary form: IRS Form 990-N
- Friends of the West Haven Public Library System
EIN 464226049 · Headquarters: West Haven, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Friends of the Weston Library Inc
EIN 061047431 · Headquarters: Weston, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Friends of the Weston Senior Activities Center Inc
EIN 800736002 · Headquarters: WESTON, CT, USA · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Friends of the Westport Center for Senior Activities
EIN 113707982 · Headquarters: WESTPORT, CT, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Friends of the Westport Library Inc
EIN 223136016 · Headquarters: Westport, CT, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2019 · Primary form: IRS Form 990-N
- Friends of the Wethersfield Library Inc
EIN 061023256 · Headquarters: Wethersfield, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Friends of the Whittemore Library Inc
EIN 222490334 · Headquarters: Naugatuck, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Friends of the Willimantic Public Library
EIN 352392757 · Headquarters: Willimantic, CT, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Friends of the Willington Public Library
EIN 061313465 · Headquarters: Willington, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Friends of the Willoughby Wallace Memorial Library Inc
EIN 066069927 · Headquarters: Branford, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Friends of the Wolcott Public Library
EIN 061295506 · Headquarters: Wolcott, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Friends of the Woodbury Public Library Inc
EIN 061542463 · Headquarters: Woodbury, CT, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Friends of the Worthington Meeting House Incorporated
EIN 202366065 · Headquarters: Kensington, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Friends of Tolland Music Corporatio N
EIN 393863391 · Headquarters: Tolland, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Friends of Topsmead State Forest Inc
EIN 831308878 · Headquarters: Litchfield, CT, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Friends of Trinity Incorporated
EIN 161698056 · Headquarters: NEW HAVEN, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Friends of Troop 1 Milford Inc
EIN 821291548 · Headquarters: MILFORD, CT, USA · Youth Development · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Friends of Troop 162 Southbury
EIN 274282845 · Headquarters: waterbury, CT, US · Youth Development · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Friends of Troop 27 Incorporated
EIN 831035872 · Headquarters: Manchester, CT, US · Youth Development · Latest available filing year: 2022 · Primary form: IRS Form 990-N
- Friends of Troop 3 Incorporated
EIN 883272781 · Headquarters: Torrington, CT, US · Youth Development · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Friends of Troop 44
EIN 923868158 · Headquarters: West Hartford, CT, US · Youth Development · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Friends of Troop 76 Simsbury Ct Inc
EIN 994583272 · Headquarters: Simsbury, CT, USA · Youth Development · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Friends of Trumbull Hs Soccer Inc
EIN 842870005 · Headquarters: TRUMBULL, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Friends of Union Fire Department
EIN 862324720 · Headquarters: Union, CT, US · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Friends of Valley Falls Inc
EIN 061260706 · Headquarters: VERNON, CT, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990
- Friends of Vintage Base Ball
EIN 264310669 · Headquarters: Hartford, CT, US · Recreation & Sports · Latest available filing year: 2019 · Primary form: IRS Form 990-N
- Friends of Wabun Dba Wabun Foundation
EIN 474480383 · Headquarters: NEW CANAAN, CT, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990
- Friends of Warren School
EIN 475237150 · Headquarters: Warren, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Friends Of Waterford Music
EIN 412620163 · Headquarters: Waterford, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Friends of Weir Farm National Historical Park Inc
EIN 474754922 · Headquarters: Georgetown, CT, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Friends of West Hartford Parks Inc
EIN 460730623 · Headquarters: West Hartford, CT, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Friends of West Side Pond Inc
EIN 814017052 · Headquarters: Goshen, CT, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Friends of Westbrook Public Library
EIN 237378781 · Headquarters: Westbrook, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Friends of Westport Parks and Recreation Inc
EIN 274127337 · Headquarters: WESTPORT, CT, USA · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Friends of Westport Public Art Collections Inc
EIN 813624942 · Headquarters: Westport, CT, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N