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. World Trade Center Children of Victims Relief Fund Inc

    EIN 311799542 · Headquarters: Greenwich, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2020 · Primary form: IRS Form 990

  2. World Union of Catholic Women's Organisations

    EIN 980511135 · Headquarters: WEST HAVEN, CT, USA · Religion Related · Latest available filing year: 2024 · Primary form: IRS Form 990

  3. World Visionary Foundation

    EIN 881104156 · Headquarters: New London, CT, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  4. World War Ii Legacy Foundation

    EIN 882972929 · Headquarters: East Hartford, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  5. World Wide Youth Networks

    EIN 861734592 · Headquarters: NEW BRITAIN, CT, USA · Youth Development · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  6. World-Wide Lighthouse Missions Inc

    EIN 061402089 · Headquarters: Manchester, CT, USA · International, Foreign Affairs & National Security · Latest available filing year: 2024 · Primary form: IRS Form 990

  7. Worldcc Foundation

    EIN 923777262 · Headquarters: RIDGEFIELD, CT, USA · Social Science · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  8. Worldpace Inc

    EIN 464927553 · Headquarters: WATERBURY, CT, US · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  9. Worldquant Foundation

    EIN 263576736 · Headquarters: OLD GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  10. Worldwide Leadership Council Inc

    EIN 742213627 · Headquarters: Hamden, CT, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  11. Worthington Hooker Basketball Association Inc

    EIN 274279876 · Headquarters: Hamden, CT, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  12. Wounds of War Corp

    EIN 900420575 · Headquarters: NEW LONDON, CT, US · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  13. WPKN Incorporated

    EIN 223162248 · Headquarters: Bridgeport, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  14. Wptp Junior Football League Inc

    EIN 061421837 · Headquarters: PUTNAM, CT, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  15. Wrch Inc

    EIN 932920275 · Headquarters: WESTPORT, CT, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  16. Wreckers Hockey Booster Club Incoporated

    EIN 932925063 · Headquarters: Westport, CT, US · Recreation & Sports · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  17. Writer's Block Ink

    EIN 260581472 · Headquarters: New London, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  18. Wro Foundation Inc

    EIN 832842549 · Headquarters: Ridgefield, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  19. Wsmsa Pto

    EIN 814925692 · Headquarters: Danbury, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  20. Wss & Ses Pto

    EIN 454091098 · Headquarters: Stafford Springs, CT, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  21. Wwire Inc

    EIN 921606980 · Headquarters: Westport, CT, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  22. Wws Foundation Co

    EIN 883675453 · Headquarters: Ellington, CT, US · Education · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  23. Wyassup Lake Improvement Association Inc

    EIN 994772028 · Headquarters: North Stonington, CT, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  24. Wyld Fyre Arts & Culture Foundation

    EIN 334891189 · Headquarters: Cromwell, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  25. Wyllys-st Johns Lodge #4 Af & Am

    EIN 066042629 · Headquarters: WEST HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  26. Wyndham Land Trust Inc

    EIN 060948844 · Headquarters: POMFRET CENTER, CT, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  27. Wynne Friends of Animals - Ct

    EIN 475645817 · Headquarters: Jewett City, CT, US · Animal Related · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  28. Xh Futures Foundation Inc

    EIN 992651332 · Headquarters: Stamford, CT, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  29. XL America Scholarship Foundation Inc

    EIN 061559574 · Headquarters: Hartford, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  30. Xmpie User Group Inc

    EIN 205519995 · Headquarters: NORWALK, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  31. Xp Grupo Luz De Esperanza Inc

    EIN 275281791 · Headquarters: WATERFORD, CT, US · Health Care · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  32. XPO Charitable Foundation

    EIN 462633090 · Headquarters: Greenwich, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2021 · Primary form: IRS Form 990-PF

  33. Xpx Connecticut Inc

    EIN 270904318 · Headquarters: Hartford, CT, US · Education · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  34. Xtreme Chaos

    EIN 061629418 · Headquarters: STRATFORD, CT, USA · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  35. Xtreme Fast Pitch Inc

    EIN 812849270 · Headquarters: Oakville, CT, US · Recreation & Sports · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  36. Xtreme Impact Inc

    EIN 271071707 · Headquarters: Meriden, CT, US · Crime & Legal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  37. Xv Foundation Inc

    EIN 851017050 · Headquarters: NEW HAVEN, CT, US · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  38. Y Access Transport Llc

    EIN 332108378 · Headquarters: NEW HAVEN, CT, US · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  39. Y Downtown Inc

    EIN 542162965 · Headquarters: Westport, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  40. Y Entrepreneurial Society Inc

    EIN 061582678 · Headquarters: NEW HAVEN, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  41. Y M C A of Norwalk Inc

    EIN 060662196 · Headquarters: Wilton, CT, USA · Human Services · Latest available filing year: 2014 · Primary form: IRS Form 990

  42. Y S Men of Westport Weston Inc

    EIN 061408351 · Headquarters: WESTPORT, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  43. Y-house

    EIN 474357018 · Headquarters: New Haven, CT, US · Environment · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  44. Y-US Inc

    EIN 222983677 · Headquarters: Hartford, CT, USA · Mental Health & Crisis Intervention · Latest available filing year: 2014 · Primary form: IRS Form 990

  45. Y-w Lions Charities

    EIN 820562478 · Headquarters: Wallingford, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  46. Yaainc

    EIN 465093366 · Headquarters: Manchester, CT, US · Arts, Culture & Humanities · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  47. Yabantu Inc

    EIN 872950176 · Headquarters: Fairfield, CT, US · Civil Rights, Social Action & Advocacy · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  48. Yaco International Inc

    EIN 473632336 · Headquarters: East Hartford, CT, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  49. Yaha Inc

    EIN 020502945 · Headquarters: Uncasville, CT, US · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  50. Yale Adelphic Literary Society

    EIN 900349115 · Headquarters: New Haven, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  51. Yale Alumni Association of Greenwich Inc

    EIN 060886060 · Headquarters: GREENWICH, CT, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  52. Yale Alumni Chorus Foundation Inc

    EIN 522388315 · Headquarters: New Haven, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  53. Yale Alumni in Public Health

    EIN 066074541 · Headquarters: New Haven, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  54. Yale Alumni Publications Inc

    EIN 060646970 · Headquarters: NEW HAVEN, CT, USA · Education · Latest available filing year: 2021 · Primary form: IRS Form 990

  55. Yale Arab Alumni Association

    EIN 260383661 · Headquarters: New Haven, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  56. Yale Aviation Inc

    EIN 060841045 · Headquarters: GUILFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  57. Yale Biomedical Engineering Society

    EIN 933338889 · Headquarters: New Haven, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  58. Yale Black Alumni Association

    EIN 452461986 · Headquarters: New Haven, CT, US · Education · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  59. Yale Black Alumni Association Inc

    EIN 334509752 · Headquarters: New Haven, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  60. Yale Blue Green Inc

    EIN 393844027 · Headquarters: Fairfield, CT, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  61. Yale Chaarg

    EIN 861666450 · Headquarters: New Haven, CT, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  62. Yale Childrens Theather-an Undergraduate Organziation Inc

    EIN 061495061 · Headquarters: New Haven, CT, US · Arts, Culture & Humanities · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  63. Yale Cinematic Productions - a Student Alliance

    EIN 872097537 · Headquarters: New Haven, CT, US · Arts, Culture & Humanities · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  64. Yale Club and Scholarship Foundation of Hartford Inc

    EIN 066056931 · Headquarters: West Hartford, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  65. Yale Club of Boston

    EIN 046071334 · Headquarters: Old Saybrook, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  66. Yale Club of Danbury Inc

    EIN 223238053 · Headquarters: Southbury, CT, US · Recreation & Sports · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  67. Yale Club of Lower Fairfield County Incorporated

    EIN 061603586 · Headquarters: New Canaan, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  68. Yale Club of Northwestern Connecticut Inc

    EIN 061045553 · Headquarters: HARWINTON, CT, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ

  69. Yale College Black Mens Student Union

    EIN 261312194 · Headquarters: New Haven, CT, US · Education · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  70. Yale College Council

    EIN 203666315 · Headquarters: NEW HAVEN, CT, USA · Education · Latest available filing year: 2019 · Primary form: IRS Form 990

  71. Yale College Dems Inc

    EIN 332841770 · Headquarters: New Haven, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  72. Yale Daily News Publishing Co Inc

    EIN 060907235 · Headquarters: NEW HAVEN, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  73. Yale Emergency Medicine Residents

    EIN 020789314 · Headquarters: New Haven, CT, US · Unknown & Unclassified · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  74. Yale Foot and Ankle Society Inc

    EIN 261913202 · Headquarters: MILFORD, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  75. Yale Gay and Lesbian Alumniae Association Inc

    EIN 133435862 · Headquarters: New Haven, CT, US · Civil Rights, Social Action & Advocacy · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  76. Yale Graduate Student Consulting Club

    EIN 453177874 · Headquarters: New Haven, CT, US · Education · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  77. Yale International Alliance

    EIN 872922803 · Headquarters: New Haven, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  78. Yale International Relations Inc

    EIN 237403870 · Headquarters: New Haven, CT, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  79. Yale Jewish Alumni Association Inc

    EIN 812927213 · Headquarters: Westport, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  80. Yale Journal of International Law Inc

    EIN 223232355 · Headquarters: New Haven, CT, US · International, Foreign Affairs & National Security · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  81. Yale Journal of Law & the Humanities Inc

    EIN 061313565 · Headquarters: New Haven, CT, US · Arts, Culture & Humanities · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  82. Yale Journal of Law and Feminism Yale Law School 127 Wall St

    EIN 061271582 · Headquarters: New Haven, CT, US · Arts, Culture & Humanities · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  83. Yale Journal on Regulation Fund Inc

    EIN 825474390 · Headquarters: NEW HAVEN, CT, USA · Education · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  84. Yale Journal on Regulation Inc

    EIN 061313567 · Headquarters: New Haven, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  85. Yale Law School Learning Center Inc

    EIN 061214651 · Headquarters: New Haven, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  86. Yale Literary Magazine Inc

    EIN 061606469 · Headquarters: New Haven, CT, US · Arts, Culture & Humanities · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  87. Yale Math Competition

    EIN 475474331 · Headquarters: New Haven, CT, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  88. Yale Medical Foundation Inc

    EIN 352672947 · Headquarters: New Haven, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  89. Yale Model Congress Association Inc

    EIN 061362946 · Headquarters: NEW HAVEN, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  90. Yale New Haven Care Continuum Corporation

    EIN 455235566 · Headquarters: NEW HAVEN, CT, USA · Health Care · Latest available filing year: 2023 · Primary form: IRS Form 990

  91. Yale New Haven Health Comprehensive Care Network Inc

    EIN 922465235 · Headquarters: NEW HAVEN, CT, US · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  92. Yale New Haven Health Services Corporation

    EIN 222529464 · Headquarters: NEW HAVEN, CT, USA · Health Care · Latest available filing year: 2023 · Primary form: IRS Form 990

  93. Yale New Haven Hospital

    EIN 060646652 · Headquarters: NEW HAVEN, CT, USA · Health Care · Latest available filing year: 2023 · Primary form: IRS Form 990

  94. Yale New Haven Medical Center Inc

    EIN 237440891 · Headquarters: NEW HAVEN, CT, USA · Health Care · Latest available filing year: 2023 · Primary form: IRS Form 990

  95. Yale Orthopedic Foundation Attn Dr Ken Kramer

    EIN 237168322 · Headquarters: HAMDEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  96. Yale Out of the Blue

    EIN 462428653 · Headquarters: New Haven, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  97. Yale Police Benevolent Association

    EIN 222974951 · Headquarters: NEW HAVEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  98. Yale Political Union

    EIN 066069119 · Headquarters: New Haven, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  99. Yale Polo and Equestrian Center Inc

    EIN 270820382 · Headquarters: STAMFORD, CT, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990

  100. Yale Record Corporation

    EIN 061071222 · Headquarters: Branford, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

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