Nonprofits in Hamden, Connecticut

Nonprofits in Hamden, Connecticut. Browse 456 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. Ikenga-nri Community USA

    EIN 010875681 · Headquarters: Hamden, CT, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  2. Inextricably Bound Community Development Corporation

    EIN 464239478 · Headquarters: HAMDEN, CT, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  3. Infection Control Nurses of Connecticut

    EIN 061331555 · Headquarters: HAMDEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  4. Inspired Harmony Inc

    EIN 831379607 · Headquarters: Hamden, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  5. Institute for Human Rights & Protec Tion Corporate

    EIN 414898073 · Headquarters: Hamden, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  6. Institute of Development and Education for Africa Inc

    EIN 010764202 · Headquarters: hamden, CT, US · International, Foreign Affairs & National Security · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  7. Institute of Industrial Engineers Inc

    EIN 066061884 · Headquarters: Hamden, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. Institute of Management Accountants Inc

    EIN 237353613 · Headquarters: HAMDEN, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  9. Interfaith Volunteer Caregivers of Great

    EIN 481306407 · Headquarters: HAMDEN, CT, USA · Human Services · Latest available filing year: 2023 · Primary form: IRS Form 990

  10. International Association of Sheet Metal Air Rail & Transportation

    EIN 222671719 · Headquarters: Hamden, CT, US · Employment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  11. International Association of Sport and Play for Young Children

    EIN 822626621 · Headquarters: Hamden, CT, US · Environment · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  12. International Order of the Rainbow Girls

    EIN 061541020 · Headquarters: Hamden, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. International Order of the Rainbow Girls

    EIN 066049093 · Headquarters: Hamden, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  14. International Order of the Rainbow Girls

    EIN 066056702 · Headquarters: Hamden, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  15. International Order of the Rainbow Girls

    EIN 237141150 · Headquarters: Hamden, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  16. International Order of the Rainbow Girls

    EIN 237141156 · Headquarters: Hamden, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  17. International Order of the Rainbow Girls

    EIN 237141184 · Headquarters: Hamden, CT, US · Youth Development · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  18. International Order of the Rainbow Girls

    EIN 237141191 · Headquarters: Hamden, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  19. International Order of the Rainbow Girls

    EIN 237141192 · Headquarters: Hamden, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  20. International Order of the Rainbow Girls

    EIN 237143852 · Headquarters: Hamden, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  21. International Order of the Rainbow Girls

    EIN 237144886 · Headquarters: Hamden, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  22. International Order of the Rainbow Girls

    EIN 237144890 · Headquarters: Hamden, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  23. International Order of the Rainbow Girls

    EIN 352243494 · Headquarters: Hamden, CT, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  24. International Order of the Rainbow Girls

    EIN 911901105 · Headquarters: Hamden, CT, US · Youth Development · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  25. International Students USA Incorporated

    EIN 223159951 · Headquarters: Hamden, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  26. International Union of Operating

    EIN 060841198 · Headquarters: HAMDEN, CT, USA · Employment · Latest available filing year: 2009 · Primary form: IRS Form 990

  27. International Union of Operating Engineers Local 478 Education Trust Inc

    EIN 043611870 · Headquarters: HAMDEN, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  28. International Union of Operating Engineers Local Union 478

    EIN 060401158 · Headquarters: HAMDEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  29. International Union of Operating Engineers Welfare Fund 478

    EIN 060662089 · Headquarters: HAMDEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  30. Interqual Research and Training Institute

    EIN 931971269 · Headquarters: Hamden, CT, US · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  31. Interrelations Collaborative Inc

    EIN 061621916 · Headquarters: Hamden, CT, US · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  32. Iota Mu Chapter of Chi Omega Fraternity

    EIN 463822652 · Headquarters: HAMDEN, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  33. Iota Mu House Corporation of Chi Omega Fraternity

    EIN 464556267 · Headquarters: Hamden, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  34. Irelands Great Hunger Museum Inc

    EIN 461158164 · Headquarters: HAMDEN, CT, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  35. Irish Cultural and Sports Association of Southern Connecticu

    EIN 453967028 · Headquarters: Hamden, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  36. Irish History Round Table Inc

    EIN 223191502 · Headquarters: Hamden, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  37. Jamaican American Connection Inc

    EIN 812039270 · Headquarters: HAMDEN, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  38. James Hillhouse Class of 1988 Scholarship

    EIN 824233277 · Headquarters: Hamden, CT, US · Education · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  39. Jamie Lynn Sullivan Memorial Foundation

    EIN 223858612 · Headquarters: Hamden, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  40. Jazz Haven Inc

    EIN 061492522 · Headquarters: Hamden, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  41. Jeromes Promise Inc

    EIN 422749422 · Headquarters: Hamden, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  42. Jewish Home for Children

    EIN 237059701 · Headquarters: HAMDEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  43. John B Howard Adult Day Center

    EIN 811456675 · Headquarters: Hamden, CT, US · Human Services · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  44. Jordans Health & Wellness Corporation

    EIN 841790942 · Headquarters: HAMDEN, CT, US · Human Services · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  45. Kappa Delta Sorority - Theta Alpha Chapter

    EIN 462257632 · Headquarters: HAMDEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  46. Karst Horizon Inc

    EIN 371996487 · Headquarters: Hamden, CT, US · Human Services · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  47. Kim Sanghee Fellowship Inc

    EIN 223465844 · Headquarters: HAMDEN, CT, USA · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  48. Knights of Columbus

    EIN 061344627 · Headquarters: Hamden, CT, US · Mutual & Membership Benefit · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  49. Knights of Columbus

    EIN 208445870 · Headquarters: HAMDEN, CT, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  50. Knights of Columbus

    EIN 237142232 · Headquarters: Hamden, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  51. Knights of Columbus

    EIN 264004543 · Headquarters: Hamden, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  52. Korean-american Society of Ct Inc

    EIN 510201369 · Headquarters: HAMDEN, CT, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  53. Laity Inc

    EIN 842730707 · Headquarters: Hamden, CT, US · Religion Related · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  54. Lambda Zeta Sigma Foundation

    EIN 990624729 · Headquarters: Hamden, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  55. League of Women Voters of Connecticut Inc

    EIN 060303635 · Headquarters: Hamden, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  56. League of Women Voters of Connecticut Inc

    EIN 066052751 · Headquarters: Hamden, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  57. League of Women Voters of Connecticut Inc

    EIN 066077800 · Headquarters: Hamden, CT, US · Civil Rights, Social Action & Advocacy · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  58. League of Women Voters of Connecticut Inc

    EIN 066077804 · Headquarters: Hamden, CT, US · Civil Rights, Social Action & Advocacy · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  59. League of Women Voters of Connecticut-education Fund Inc

    EIN 061427498 · Headquarters: HAMDEN, CT, USA · Civil Rights, Social Action & Advocacy · Latest available filing year: 2024 · Primary form: IRS Form 990

  60. League of Women Voters of Greater Middletown Education Fund Inc

    EIN 061242548 · Headquarters: Hamden, CT, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  61. Legacy Developmental Services

    EIN 934678353 · Headquarters: HAMDEN, CT, US · Youth Development · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  62. Legal Affairs Inc

    EIN 061600263 · Headquarters: Hamden, CT, US · Arts, Culture & Humanities · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  63. Lewis G Schaeneman Jr Foundation Inc

    EIN 061390923 · Headquarters: HAMDEN, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  64. Lifting Others Virtuously Everyday

    EIN 883766521 · Headquarters: Hamden, CT, US · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  65. Lion of Judah International Ministries Inc

    EIN 455326696 · Headquarters: HAMDEN, CT, US · Religion Related · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  66. Little Symphony Society Inc

    EIN 510166571 · Headquarters: Hamden, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  67. Lore F Leder Foundation Trust

    EIN 206742467 · Headquarters: HAMDEN, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2023 · Primary form: IRS Form 990-PF

  68. Love-on Inc

    EIN 834482882 · Headquarters: Hamden, CT, US · Mental Health & Crisis Intervention · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  69. LPIC Inc

    EIN 872076112 · Headquarters: Hamden, CT, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  70. Magenta Mind Inc

    EIN 933605773 · Headquarters: Hamden, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. Magnolia Theatre Company

    EIN 843642512 · Headquarters: Hamden, CT, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  72. Marquise L Baskin Touchable Foundation Inc

    EIN 832161615 · Headquarters: Hamden, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  73. Mason T Stasiak Foundation Inc

    EIN 850966367 · Headquarters: Hamden, CT, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  74. Mcdermott Family Foundation Inc

    EIN 331140405 · Headquarters: HAMDEN, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  75. Meadowbrook Cooperative Club Inc

    EIN 060895107 · Headquarters: HAMDEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  76. Mighty Ones

    EIN 830836271 · Headquarters: HAMDEN, CT, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  77. Mirror Visions Inc

    EIN 061594458 · Headquarters: HAMDEN, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  78. Miss Ct Scholarship Organization Inc

    EIN 845143308 · Headquarters: Hamden, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  79. Missionary Rescue Foundation

    EIN 571177493 · Headquarters: Hamden, CT, US · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  80. Modern Woodmen of America

    EIN 237502089 · Headquarters: HAMDEN, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  81. Monitor My Health Inc

    EIN 814498882 · Headquarters: HAMDEN, CT, USA · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990

  82. Mount Carmel Burying Ground Society of Hamden

    EIN 066038925 · Headquarters: Hamden, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  83. My Closet

    EIN 472702178 · Headquarters: Hamden, CT, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  84. Mystery of 64 Squares Inc

    EIN 932011926 · Headquarters: Hamden, CT, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  85. Nadeau Farm Inc

    EIN 825436100 · Headquarters: Hamden, CT, US · Food, Agriculture & Nutrition · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  86. Nami of Connecticut Incorporated

    EIN 222597091 · Headquarters: Hamden, CT, US · Mental Health & Crisis Intervention · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  87. Nathan Ebanks Children Advocacy Group Inc

    EIN 472153741 · Headquarters: Hamden, CT, US · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  88. National Association of Negro Busin Ess and Professional Womens C

    EIN 113016409 · Headquarters: Hamden, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  89. National Association of Retired & Veteran Railway Employees

    EIN 521255474 · Headquarters: Hamden, CT, US · Public & Societal Benefit · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  90. National Association of Teachers of Singing

    EIN 223202640 · Headquarters: Hamden, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  91. National Council of Jewish Women Incorporated

    EIN 237426866 · Headquarters: Hamden, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  92. National Senior Conservation Corps Inc

    EIN 262128111 · Headquarters: HAMDEN, CT, USA · Environment · Latest available filing year: 2017 · Primary form: IRS Form 990-EZ

  93. National Society of the Daughters of the American Revolution

    EIN 066041068 · Headquarters: Hamden, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  94. National Society of Tole & Decorative Painters

    EIN 061309824 · Headquarters: Hamden, CT, US · Arts, Culture & Humanities · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  95. New Colony Development Corporation

    EIN 814490452 · Headquarters: HAMDEN, CT, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  96. New England Ibero American Film Festival

    EIN 271154333 · Headquarters: HAMDEN, CT, US · Arts, Culture & Humanities · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  97. New England Retina Research & Educational Foundation Inc

    EIN 061524372 · Headquarters: Hamden, CT, US · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  98. New England Skeptical Society Inc

    EIN 061484833 · Headquarters: Hamden, CT, US · Public & Societal Benefit · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  99. New England Supreme Athletics Inc

    EIN 993153448 · Headquarters: Hamden, CT, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  100. New Haven Association for the Education of Young Children

    EIN 264641375 · Headquarters: Hamden, CT, US · Education · Latest available filing year: 2018 · Primary form: IRS Form 990-N

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