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

  1. Unbound Collective

    EIN 413631910 · Headquarters: Westport, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  2. Uncas Council No 32 Knights of Columbus

    EIN 205670956 · Headquarters: Unionville, CT, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  3. Uncas Foundation Inc

    EIN 810728073 · Headquarters: GUILFORD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  4. Unchain Foundation Inc

    EIN 825015251 · Headquarters: stamford, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2019 · Primary form: IRS Form 990-EZ

  5. Under One Roof Inc

    EIN 061377860 · Headquarters: NORWALK, CT, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  6. Underdog Sanctuary

    EIN 872506627 · Headquarters: MANCHESTER, CT, US · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  7. Undergraduate Moot Court Team

    EIN 843115086 · Headquarters: Westport, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. Underground Ne

    EIN 862572246 · Headquarters: BLOOMFIELD, CT, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  9. Underprivileged Haitian Children Foundation Uhcf Inc

    EIN 830878087 · Headquarters: New London, CT, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  10. Understanding Judges America Inc

    EIN 452461247 · Headquarters: LITCHFIELD, CT, US · Education · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  11. Undies Project Inc

    EIN 814243048 · Headquarters: COS COB, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  12. Unesco Center for Global Friendship

    EIN 821306792 · Headquarters: Bridgeport, CT, US · International, Foreign Affairs & National Security · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  13. Unexpected Pit Bull Inc

    EIN 272529497 · Headquarters: Danbury, CT, USA · Animal Related · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ

  14. Unico Club of Waterbury Inc

    EIN 066046913 · Headquarters: WATERBURY, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  15. Unico National

    EIN 060347921 · Headquarters: BRISTOL, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  16. Unico National

    EIN 060980251 · Headquarters: Watertown, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  17. Unico National

    EIN 061463536 · Headquarters: Stamford, CT, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  18. Unico National

    EIN 061472361 · Headquarters: WETHERSFIELD, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  19. Unico National

    EIN 061480330 · Headquarters: Bristol, CT, US · Arts, Culture & Humanities · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  20. Unico National

    EIN 066065547 · Headquarters: WEST HARTFORD, CT, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  21. Unico National

    EIN 066086735 · Headquarters: New Britain, CT, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  22. Unico National

    EIN 066086738 · Headquarters: SHELTON, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  23. Unico National

    EIN 223202703 · Headquarters: Ansonia, CT, US · Arts, Culture & Humanities · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  24. Unico National

    EIN 237074221 · Headquarters: Manchester, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  25. Unico National

    EIN 237251951 · Headquarters: Newington, CT, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  26. Unico National

    EIN 900617134 · Headquarters: Darien, CT, US · Arts, Culture & Humanities · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  27. Unico National Incorporated - Stamford C C/o Tpa

    EIN 061304398 · Headquarters: STAMFORD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  28. Unico National Torrington

    EIN 066086737 · Headquarters: TORRINGTON, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  29. Unico National Wethersfield Chapter

    EIN 061276150 · Headquarters: WETHERSFIELD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  30. Unified Human Foundation Inc

    EIN 852875340 · Headquarters: Stamford, CT, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  31. Unified Theater Inc

    EIN 383689243 · Headquarters: WEST HARTFORD, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2017 · Primary form: IRS Form 990

  32. Uniformed Professional Fire Fighters Association of Connecticut Emergency Rel

    EIN 061632677 · Headquarters: WEST HARTFORD, CT, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  33. Uniformed Services Peer Council

    EIN 475595049 · Headquarters: Jewett City, CT, US · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  34. Unify Soccer Club Inc

    EIN 873168158 · Headquarters: Danbury, CT, US · Human Services · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  35. Union Agricultural Society Inc

    EIN 066065810 · Headquarters: SOMERS, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  36. Union Agricultural Society of Barkhamsted Colebrook & Hartland

    EIN 060604721 · Headquarters: RIVERTON, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  37. Union Baptist Church

    EIN 066052205 · Headquarters: E KILLINGLY, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  38. Union Cemetery Association Inc

    EIN 060602016 · Headquarters: Stratford, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  39. Union Cemetery Association of Easton

    EIN 932917873 · Headquarters: Easton, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  40. Union Cemetery Association of Waterford

    EIN 222548552 · Headquarters: Waterford, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  41. Union City Polish American Benefit Society Inc

    EIN 066073119 · Headquarters: NAUGATUCK, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  42. Union City Polish American Club Inc

    EIN 060569390 · Headquarters: NAUGATUCK, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  43. Union Historical Society

    EIN 510159205 · Headquarters: Union, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  44. Union Lodge No5AF & AM Stamford CT

    EIN 066050839 · Headquarters: Stamford, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  45. Union Memorial Preschool Pto

    EIN 994792955 · Headquarters: STAMFORD, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  46. Union Savings Bank Foundation Inc

    EIN 061508286 · Headquarters: DANBURY, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  47. Union Social Services Corporation Inc

    EIN 810553215 · Headquarters: Stamford, CT, US · Human Services · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  48. Union Street Tavern Trot Inc

    EIN 812687499 · Headquarters: Windsor, CT, USA · Medical Research · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  49. Unionville Lions Charitable Corporation

    EIN 061569893 · Headquarters: Unionville, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  50. Unionville Masonic Building Association Inc

    EIN 066048758 · Headquarters: Unionville, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  51. Unionville Museum Inc

    EIN 222589034 · Headquarters: Unionville, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  52. Unionville Village Improvement Association Inc

    EIN 061597354 · Headquarters: UNIONVILLE, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  53. Unique Descendants

    EIN 462428010 · Headquarters: Glastonbury, CT, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  54. Unique Healthy Living Inc

    EIN 843287962 · Headquarters: Bridgeport, CT, US · Public & Societal Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  55. Uniroyal Holding Inc Wage Benefit Trust 22-06641

    EIN 061573963 · Headquarters: NAUGATUCK, CT, USA · Mutual & Membership Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990

  56. Uniroyal Holding Inc Welfare Benefit Trust 22-30959

    EIN 061426852 · Headquarters: NAUGATUCK, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  57. Uniroyal Holding Inc Welfare Benefit Trust Ii

    EIN 061508704 · Headquarters: NAUGATUCK, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  58. Uniroyal Non-union Retiree Medical Benefit Steering Committee Inc

    EIN 271347045 · Headquarters: Naugatuck, CT, USA · Employment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  59. Unitas Club Inc

    EIN 066100166 · Headquarters: East Haven, CT, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  60. Unite for Sight Inc

    EIN 320081616 · Headquarters: NORTH HAVEN, CT, USA · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2024 · Primary form: IRS Form 990

  61. Unite Here 217 Local

    EIN 060694008 · Headquarters: NEW HAVEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  62. Unite Here 34 Local Fue

    EIN 061048535 · Headquarters: NEW HAVEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  63. Unite Here 35 Local Fue

    EIN 060835624 · Headquarters: NEW HAVEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  64. Unite Here Local 33 Graduate Employees at Yale

    EIN 814521938 · Headquarters: NEW HAVEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  65. Unitechange Org

    EIN 272494065 · Headquarters: New Haven, CT, US · International, Foreign Affairs & National Security · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  66. United Action Connecticut Inc

    EIN 061525092 · Headquarters: Meriden, CT, US · Civil Rights, Social Action & Advocacy · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  67. United America Christian Academy

    EIN 923668372 · Headquarters: Shelton, CT, US · Religion Related · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  68. United Assoc of Journeymen & Apprentof the Plumb& Pipefitting Ind Local 777

    EIN 061390416 · Headquarters: MERIDEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  69. United Association of Journeymen & Appre New England States Pipe Trades Assn

    EIN 222921877 · Headquarters: MERIDEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  70. United Auto Aerospace And

    EIN 237170577 · Headquarters: WEST HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990

  71. United Auto Workers Local 376

    EIN 060568444 · Headquarters: WEST HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  72. United Brotherhood of Carpenters & 43 BJC Association Inc

    EIN 061403792 · Headquarters: Hartford, CT, USA · Community Improvement & Capacity Building · Latest available filing year: 2016 · Primary form: IRS Form 990

  73. United Brotherhood of Carpenters & Joiners of America

    EIN 061494735 · Headquarters: Yalesville, CT, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  74. United Brotherhood of Carpenters & Joiners of America - Local 210

    EIN 060571112 · Headquarters: Monroe, CT, USA · Employment · Latest available filing year: 2016 · Primary form: IRS Form 990

  75. United Brotherhood of Carpenters & Joiners of America - Local 24

    EIN 060914796 · Headquarters: Yalesville, CT, USA · Employment · Latest available filing year: 2016 · Primary form: IRS Form 990

  76. United Brotherhood of Carpenters & Joiners of America - Local 43

    EIN 060571114 · Headquarters: HARTFORD, CT, USA · Employment · Latest available filing year: 2016 · Primary form: IRS Form 990

  77. United Brotherhood of Carpenters and Joiners of America

    EIN 060795434 · Headquarters: GROTON, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  78. United by One Inc

    EIN 933676514 · Headquarters: HAMDEN, CT, US · Civil Rights, Social Action & Advocacy · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  79. United Cerebral Palsy Association of Eastern Connecticut

    EIN 060792820 · Headquarters: Quaker Hill, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  80. United Cerebral Palsy of Southern

    EIN 061055688 · Headquarters: WALLINGFORD, CT, USA · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2012 · Primary form: IRS Form 990

  81. United Church of Christ Musicians Association

    EIN 061482866 · Headquarters: Canton, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  82. United Commercial Travelers of America

    EIN 237622330 · Headquarters: Southington, CT, US · Recreation & Sports · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  83. United Community and Family Servicesinc

    EIN 060653142 · Headquarters: NORWICH, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  84. United Community Church of Ch

    EIN 320204105 · Headquarters: WATERBURY, CT, USA · Religion Related · Latest available filing year: 2013 · Primary form: IRS Form 990

  85. United Compassion Fund Inc

    EIN 471026269 · Headquarters: STAMFORD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990

  86. United Ct Action for Neighborhoods Inc

    EIN 060990578 · Headquarters: HARTFORD, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  87. United Elec Rad Mach Workers of Amer

    EIN 060523359 · Headquarters: NEW HAVEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  88. United Elecrical Radio and Machine Workers of America

    EIN 061424285 · Headquarters: SOUTH GLASTONBURY, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  89. United Elecricial Radio and Machine Worker of America

    EIN 061432707 · Headquarters: Wallingford, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  90. United Electrical Radio & Machine Workers of America

    EIN 010441453 · Headquarters: Suffield, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  91. United Electrical Radio & Machine Workers of America

    EIN 061332114 · Headquarters: East Berlin, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  92. United Electrical Radio & Machine Workers of America

    EIN 061461977 · Headquarters: Hamden, CT, US · Arts, Culture & Humanities · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  93. United Electrical Radio & Machine Workers of America

    EIN 061489991 · Headquarters: Old Saybrook, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  94. United Electrical Radio & Machine Workers of America

    EIN 061515601 · Headquarters: Farmington, CT, US · Arts, Culture & Humanities · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  95. United Electrical Radio & Machine Workers of America

    EIN 270254729 · Headquarters: Groton, CT, US · Arts, Culture & Humanities · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  96. United Electrical Radio & Machine Workers of America

    EIN 550916336 · Headquarters: Stamford, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2013 · Primary form: IRS Form 990-EZ

  97. United Electrical Radio & Machine Workers of America

    EIN 900584008 · Headquarters: suffield, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  98. United Electrical Radio & Machine Workers of America

    EIN 900584771 · Headquarters: windsor locks, CT, US · Arts, Culture & Humanities · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  99. United Electrical Radio & Machine Workers of America

    EIN 900587377 · Headquarters: Berlin, CT, US · Arts, Culture & Humanities · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  100. United Electrical Radio & Machine Workers of America

    EIN 900607662 · Headquarters: Waterford, CT, US · Arts, Culture & Humanities · Latest available filing year: 2010 · Primary form: IRS Form 990-N

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