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. Altrusa International Inc

    EIN 066107698 · Headquarters: Middletown, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  2. Altrusa International of Litchfield County

    EIN 813026915 · Headquarters: Torrington, CT, US · Public & Societal Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  3. Aluminum Falcon Robotics Inc Co Robert E Fitch High School

    EIN 471411491 · Headquarters: Groton, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  4. Alumnae Association of Hartford Hospital School of Nursing Inc

    EIN 060664601 · Headquarters: HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  5. Alumnae Association of Mount Holyoke College Inc

    EIN 020355207 · Headquarters: Glastonbury, CT, US · Education · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  6. Alumnae Association of Mount Holyoke College Inc

    EIN 060966209 · Headquarters: Darien, CT, US · Education · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  7. Alumni Association of Psi Chapter of Psi Upsilon Inc

    EIN 150536199 · Headquarters: GREENWICH, CT, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. Alumni Association of the Hartford Public High School

    EIN 066026028 · Headquarters: EAST HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  9. Alumni Association of the Noah Webster Grammar School

    EIN 061519145 · Headquarters: Hartford, CT, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  10. Alumni Fund Association of Yale University

    EIN 066078326 · Headquarters: New Haven, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  11. Alumni in Support of Yale Opthalmology Inc

    EIN 271984999 · Headquarters: Danbury, CT, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  12. Always Brothers

    EIN 274297694 · Headquarters: Fairfield, CT, USA · Public & Societal Benefit · Latest available filing year: 2016 · Primary form: IRS Form 990-EZ

  13. Always Home Inc

    EIN 061536185 · Headquarters: MYSTIC, CT, USA · Housing & Shelter · Latest available filing year: 2024 · Primary form: IRS Form 990

  14. Am Fed of State County & Municipal Employees 2836 CT Local

    EIN 510213499 · Headquarters: West Haven, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  15. Ama Dance Theatre Foundation Inc

    EIN 874789165 · Headquarters: MYSTIC, CT, US · Human Services · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  16. Amadeus Global Ministries

    EIN 881346334 · Headquarters: Suffield, CT, USA · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  17. Amal for Women Inc

    EIN 852814967 · Headquarters: West Hartford, CT, USA · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  18. Amalgamate Dance Company Inc

    EIN 465130687 · Headquarters: TRUMBULL, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  19. Amalgamated Transit Union

    EIN 060241073 · Headquarters: NORTH HAVEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  20. Amalgamated Transit Union

    EIN 060655044 · Headquarters: Stamford, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  21. Amalgamated Transit Union

    EIN 061305002 · Headquarters: Danbury, CT, US · Employment · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  22. Amalgamated Transit Union

    EIN 521339749 · Headquarters: Mansfield Center, CT, US · Employment · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  23. Amalgamated Transit Union

    EIN 521339756 · Headquarters: Bozrah, CT, US · Employment · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  24. Amalgamated Transit Union

    EIN 521686481 · Headquarters: Derby, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  25. Amalgamated Transit Union Afl-cio-clc Local 1336

    EIN 066082512 · Headquarters: BRIDGEPORT, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  26. Amalgamated Transit Union Local 1763

    EIN 161766829 · Headquarters: EAST HARTFORD, CT, USA · Employment · Latest available filing year: 2025 · Primary form: IRS Form 990

  27. Amalgamated Transit Union Local 425

    EIN 060241076 · Headquarters: EAST HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  28. Amaris Living Foundation Inc

    EIN 813735983 · Headquarters: Stamford, CT, USA · Religion Related · Latest available filing year: 2023 · Primary form: IRS Form 990-PF

  29. Amateur Athletic Union of the United States

    EIN 010943957 · Headquarters: Somers, CT, US · Recreation & Sports · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  30. Amateur Athletic Union of the United States

    EIN 161744032 · Headquarters: CHESHIRE, CT, US · Recreation & Sports · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  31. Amateur Athletic Union of the United States

    EIN 204077277 · Headquarters: Westport, CT, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  32. Amateur Athletic Union of the United States

    EIN 263113368 · Headquarters: Waterford, CT, US · Recreation & Sports · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  33. Amateur Athletic Union of the United States

    EIN 263116447 · Headquarters: Bristol, CT, US · Recreation & Sports · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  34. Amateur Athletic Union of the United States

    EIN 311175370 · Headquarters: EAST HAVEN, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  35. Amateur Athletic Union of the United States

    EIN 341982526 · Headquarters: westport, CT, US · Recreation & Sports · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  36. Amateur Athletic Union of the United States

    EIN 453009078 · Headquarters: Stratford, CT, US · Recreation & Sports · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  37. Amateur Athletic Union of the United States

    EIN 471861822 · Headquarters: South Windsor, CT, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  38. Amateur Athletic Union of the United States

    EIN 800780085 · Headquarters: Plainville, CT, US · Recreation & Sports · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  39. Amateur Athletic Union of the United States Inc

    EIN 202762619 · Headquarters: Norwalk, CT, US · Recreation & Sports · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  40. Amateur Athletic Union of the United States Inc

    EIN 364721092 · Headquarters: COLCHESTER, CT, US · Recreation & Sports · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  41. Amateur Athletic Union of the United States Inc

    EIN 464503555 · Headquarters: Milford, CT, US · Recreation & Sports · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  42. Amateur Athletic Union of the United States Inc

    EIN 464957083 · Headquarters: Winsted, CT, US · Recreation & Sports · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  43. Amateur Athletic Union of the United States Inc

    EIN 472341122 · Headquarters: Cromwell, CT, US · Recreation & Sports · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  44. Amateur Athletic Union of the United States Inc

    EIN 473296193 · Headquarters: Ellington, CT, US · Recreation & Sports · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  45. Amateur Athletic Union of the United States Inc

    EIN 473642214 · Headquarters: Hamden, CT, US · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  46. Amateur Athletic Union of the United States Inc

    EIN 474828759 · Headquarters: Bristol, CT, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  47. Amateur Athletic Union of the United States Inc

    EIN 475598644 · Headquarters: North Haven, CT, US · Recreation & Sports · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  48. Amateur Athletic Union of the United States Inc

    EIN 611669660 · Headquarters: Granby, CT, US · Recreation & Sports · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  49. Amateur Athletic Union of the United States Inc

    EIN 611709241 · Headquarters: Greenwich, CT, US · Recreation & Sports · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  50. Amateur Athletic Union of the United States Inc

    EIN 611725403 · Headquarters: Tolland, CT, US · Recreation & Sports · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  51. Amateur Athletic Union of the United States Inc

    EIN 800653394 · Headquarters: Middletown, CT, US · Recreation & Sports · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  52. Amateur Athletic Union of the United States Inc

    EIN 813166814 · Headquarters: Southington, CT, US · Recreation & Sports · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  53. Amateur Athletic Union of the United States Inc

    EIN 813979413 · Headquarters: GUILFORD, CT, US · Recreation & Sports · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  54. Amateur Athletic Union of the United States Inc

    EIN 823354131 · Headquarters: Clinton, CT, US · Recreation & Sports · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  55. Amateur Athletic Union of the United States Inc

    EIN 823405586 · Headquarters: windsor locks, CT, US · Recreation & Sports · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  56. Amateur Athletic Union of the United States Inc

    EIN 823473726 · Headquarters: Southington, CT, US · Recreation & Sports · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  57. Amateur Athletic Union of the United States Inc

    EIN 824431109 · Headquarters: BLOOMFIELD, CT, US · Recreation & Sports · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  58. Amateur Athletic Union of the United States Inc

    EIN 831629339 · Headquarters: SHELTON, CT, US · Recreation & Sports · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  59. Amateur Athletic Union of the United States Inc

    EIN 832524511 · Headquarters: Groton, CT, US · Recreation & Sports · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  60. Amateur Athletic Union of the United States Inc

    EIN 842056878 · Headquarters: Bristol, CT, US · Recreation & Sports · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  61. Amateur Athletic Union of the United States Inc

    EIN 843051408 · Headquarters: Cromwell, CT, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  62. Amateur Athletic Union of the United States Inc

    EIN 843164421 · Headquarters: Danielson, CT, US · Recreation & Sports · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  63. Amateur Athletic Union of the United States Inc

    EIN 900825711 · Headquarters: Bloomfield, CT, US · Recreation & Sports · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  64. Amateur Athletic Union of the United States Inc

    EIN 920857518 · Headquarters: Burlington, CT, US · Recreation & Sports · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  65. Amateur Athletic Union of the Us

    EIN 862645374 · Headquarters: MILFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  66. Amateur Athletic Union of the Us Inc

    EIN 833774480 · Headquarters: Colchester, CT, US · Recreation & Sports · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  67. Amature Athletic Union of the United States

    EIN 364722833 · Headquarters: Bristol, CT, US · Recreation & Sports · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  68. Amber Alert Childrens Foundation Inc

    EIN 263370516 · Headquarters: New Haven, CT, US · Crime & Legal Related · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  69. Amber Club Inc

    EIN 060241203 · Headquarters: New Britain, CT, US · Recreation & Sports · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  70. Ambrose Alli University Alumni Association North America

    EIN 824867333 · Headquarters: South Windsor, CT, US · Education · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  71. Amc Innovative Health Foundation Inc

    EIN 392819042 · Headquarters: STAMFORD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  72. Amd Compassion Foundation

    EIN 874443706 · Headquarters: Stamford, CT, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  73. Amelia Classical Music Series

    EIN 991767074 · Headquarters: Avon, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  74. Amenuveve Inc

    EIN 845144698 · Headquarters: Westport, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  75. Amer Fed of St County Muni Employees

    EIN 237062638 · Headquarters: PLAINVILLE, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  76. Amercian Legion

    EIN 161636661 · Headquarters: Gales Ferry, CT, US · Public & Societal Benefit · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  77. Amercian Legion

    EIN 550871551 · Headquarters: Southbury, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  78. America for Ukraine

    EIN 923138551 · Headquarters: ORANGE, CT, USA · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  79. America Gives Hope Foundation

    EIN 800801427 · Headquarters: NORWALK, CT, US · International, Foreign Affairs & National Security · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  80. America's First Network Credit Union

    EIN 060944493 · Headquarters: EAST HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  81. American Academy of Forensic Psychology Inc

    EIN 911924202 · Headquarters: CLINTON, CT, USA · Medical Research · Latest available filing year: 2024 · Primary form: IRS Form 990

  82. American Academy of Matrimonial Lawyers Ct Chapter Aaml C/o David Mcgrath

    EIN 061060466 · Headquarters: HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  83. American Academy of Psychiatry & the Law

    EIN 133223111 · Headquarters: Bloomfield, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  84. American Academy of Psychiatry & the Law

    EIN 382247667 · Headquarters: BLOOMFIELD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  85. American Academy of Psychiatry & the Law

    EIN 521491301 · Headquarters: Bloomfield, CT, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  86. American Academy of Psychiatry & the Law

    EIN 521638018 · Headquarters: Bloomfield, CT, US · Mental Health & Crisis Intervention · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  87. American Alumni of Glasgow University

    EIN 262199866 · Headquarters: New Haven, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  88. American Art Therapy Association Inc

    EIN 061452871 · Headquarters: Shelton, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  89. American Assoc of Franchisees & Dealers

    EIN 336117862 · Headquarters: Enfield, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  90. American Association of Colleges for Teacher Education

    EIN 510232628 · Headquarters: NEW HAVEN, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  91. American Association of Diabetes Educators Inc

    EIN 363551250 · Headquarters: Middletown, CT, US · Education · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  92. American Association of Family and Consumer Sciences

    EIN 061362860 · Headquarters: Berlin, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  93. American Association of Healthcare Administrative Management

    EIN 943192111 · Headquarters: Waterbury, CT, US · Employment · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  94. American Association of Neuroscience Nurses

    EIN 571210155 · Headquarters: North Granby, CT, US · Health Care · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  95. American Association of Neuroscience Nurses

    EIN 812986058 · Headquarters: Shelton, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  96. American Association of Psychiatric Pharmacists

    EIN 461175940 · Headquarters: STORRS, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  97. American Association of the Order of St Lazarus Inc

    EIN 237230009 · Headquarters: RIDGEFIELD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  98. American Association of University Adm Administrators

    EIN 862001623 · Headquarters: LITCHFIELD, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  99. American Association of University Women

    EIN 061443581 · Headquarters: Naugatuck, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  100. American Association of University Women

    EIN 066013820 · Headquarters: New Canaan, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2017 · Primary form: IRS Form 990-N

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