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. National Society Daughters of the Union 1861-1865

    EIN 474497904 · Headquarters: Lisbon, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  2. National Society of Black Engineers

    EIN 822565917 · Headquarters: Fairfield, CT, US · Science & Technology · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  3. National Society of Black Engineers - Yale Chapter

    EIN 934362582 · Headquarters: New Haven, CT, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  4. National Society of New England Women

    EIN 237062810 · Headquarters: Enfield, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  5. National Society of the Children of the American Revolution

    EIN 237248840 · Headquarters: Vernon, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  6. National Society of the Children of the American Revolution

    EIN 260736603 · Headquarters: Cobalt, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  7. National Society of the Children of the American Revolution

    EIN 261779493 · Headquarters: New Canaan, CT, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. National Society of the Children of the American Revolution

    EIN 262654869 · Headquarters: Wilton, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  9. National Society of the Children of the American Revolution

    EIN 510659438 · Headquarters: Bridgeport, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  10. National Society of the Children of the American Revolution

    EIN 882564213 · Headquarters: East Lyme, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  11. National Society of the Children of the American Revolution

    EIN 900430830 · Headquarters: Danielson, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  12. National Society of the Children of the American Revolution

    EIN 900430831 · Headquarters: Trumbull, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. National Society of the Children of the American Revolution

    EIN 900430833 · Headquarters: Trumbull, CT, US · Youth Development · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  14. National Society of the Children of the American Revolution

    EIN 900430834 · Headquarters: GREENWICH, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  15. National Society of the Colonial Dames of America in the State of Connecticut

    EIN 060699245 · Headquarters: WETHERSFIELD, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  16. National Society of the Daughters of the American Revolution

    EIN 056010639 · Headquarters: Norwich, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  17. National Society of the Daughters of the American Revolution

    EIN 060934069 · Headquarters: Vernon, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  18. National Society of the Daughters of the American Revolution

    EIN 060955270 · Headquarters: Norfolk, CT, US · Arts, Culture & Humanities · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  19. National Society of the Daughters of the American Revolution

    EIN 066039157 · Headquarters: Newington, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  20. National Society of the Daughters of the American Revolution

    EIN 066039158 · Headquarters: Simsbury, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  21. National Society of the Daughters of the American Revolution

    EIN 066040565 · Headquarters: Fairfield, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  22. 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

  23. National Society of the Daughters of the American Revolution

    EIN 066041253 · Headquarters: Bristol, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  24. National Society of the Daughters of the American Revolution

    EIN 066044697 · Headquarters: East Hampton, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  25. National Society of the Daughters of the American Revolution

    EIN 066045313 · Headquarters: Washington, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  26. National Society of the Daughters of the American Revolution

    EIN 066045352 · Headquarters: Mystic, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  27. National Society of the Daughters of the American Revolution

    EIN 066046467 · Headquarters: Darien, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. National Society of the Daughters of the American Revolution

    EIN 066046540 · Headquarters: Danbury, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  29. National Society of the Daughters of the American Revolution

    EIN 066046559 · Headquarters: Southington, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  30. National Society of the Daughters of the American Revolution

    EIN 066046731 · Headquarters: Wallingford, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  31. National Society of the Daughters of the American Revolution

    EIN 066046896 · Headquarters: New Milford, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  32. National Society of the Daughters of the American Revolution

    EIN 066047529 · Headquarters: Thomaston, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  33. National Society of the Daughters of the American Revolution

    EIN 066054343 · Headquarters: Glastonbury, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  34. National Society of the Daughters of the American Revolution

    EIN 066054817 · Headquarters: Enfield, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  35. National Society of the Daughters of the American Revolution

    EIN 066055077 · Headquarters: Derby, CT, US · Arts, Culture & Humanities · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  36. National Society of the Daughters of the American Revolution

    EIN 066056431 · Headquarters: Ashford, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  37. National Society of the Daughters of the American Revolution

    EIN 066056753 · Headquarters: Norwalk, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  38. National Society of the Daughters of the American Revolution

    EIN 066057739 · Headquarters: New Canaan, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  39. National Society of the Daughters of the American Revolution

    EIN 066061418 · Headquarters: Windsor, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  40. National Society of the Daughters of the American Revolution

    EIN 066061425 · Headquarters: Norwich, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  41. National Society of the Daughters of the American Revolution

    EIN 066062078 · Headquarters: EAST HAMPTON, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  42. National Society of the Daughters of the American Revolution

    EIN 066062372 · Headquarters: Newington, CT, US · Arts, Culture & Humanities · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  43. National Society of the Daughters of the American Revolution

    EIN 066066222 · Headquarters: Woodstock, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  44. National Society of the Daughters of the American Revolution

    EIN 066068871 · Headquarters: Southbury, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  45. National Society of the Daughters of the American Revolution

    EIN 066068872 · Headquarters: Moosup, CT, US · Arts, Culture & Humanities · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  46. National Society of the Daughters of the American Revolution

    EIN 066068874 · Headquarters: Stamford, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  47. National Society of the Daughters of the American Revolution

    EIN 066068876 · Headquarters: New Hartford, CT, US · Arts, Culture & Humanities · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  48. National Society of the Daughters of the American Revolution

    EIN 066068877 · Headquarters: Wilton, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  49. National Society of the Daughters of the American Revolution

    EIN 066068878 · Headquarters: New Hartford, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  50. National Society of the Daughters of the American Revolution

    EIN 066068879 · Headquarters: LEBANON, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  51. National Society of the Daughters of the American Revolution

    EIN 066068882 · Headquarters: Glastonbury, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  52. National Society of the Daughters of the American Revolution

    EIN 066070298 · Headquarters: Cheshire, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  53. National Society of the Daughters of the American Revolution

    EIN 166064847 · Headquarters: Manchester, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  54. National Society of the Daughters of the American Revolution

    EIN 270702040 · Headquarters: South Windsor, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  55. National Society of the Daughters of the American Revolution

    EIN 412278035 · Headquarters: Colchester, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  56. National Society of the Daughters of the American Revolution

    EIN 451807350 · Headquarters: Danielson, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  57. National Society of the Daughters of the American Revolution

    EIN 510230359 · Headquarters: Weston, CT, US · Arts, Culture & Humanities · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  58. National Society of the Daughters of the American Revolution

    EIN 611609440 · Headquarters: Shelton, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  59. National Society of the Daughters of the American Revolution

    EIN 850737443 · Headquarters: New London, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  60. National Society of the Daughters of the American Revolution

    EIN 872908878 · Headquarters: Greenwich, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  61. National Society of the Daughters of the American Revolution

    EIN 874336244 · Headquarters: Redding, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  62. National Society of the Sons of the American Revolution

    EIN 061378435 · Headquarters: Bethel, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  63. National Society of the Sons of the American Revolution

    EIN 061444248 · Headquarters: Lebanon, CT, US · Arts, Culture & Humanities · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  64. National Society of the Sons of the American Revolution

    EIN 061471612 · Headquarters: WESTPORT, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  65. National Society of the Sons of the American Revolution

    EIN 066045781 · Headquarters: Cheshire, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  66. National Society of the Sons of the American Revolution

    EIN 066051974 · Headquarters: New Canaan, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  67. National Society of the Sons of the American Revolution

    EIN 066068108 · Headquarters: Morris, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  68. National Society of the Sons of the American Revolution

    EIN 066070314 · Headquarters: New London, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  69. National Society of the Sons of the American Revolution

    EIN 066085370 · Headquarters: Monroe, CT, US · Arts, Culture & Humanities · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  70. National Society of the Sons of the American Revolution

    EIN 146036755 · Headquarters: Willington, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. National Society of the Sons of the American Revolution

    EIN 222842228 · Headquarters: PLANTSVILLE, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  72. National Society of Tole & Decorative Painters

    EIN 061298977 · Headquarters: Niantic, CT, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  73. 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

  74. National Society of Tole & Decorative Painters Inc

    EIN 061518364 · Headquarters: Washington Depot, CT, US · Arts, Culture & Humanities · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  75. National Society of Tole & Decorative Painters Inc

    EIN 352354559 · Headquarters: Northfield, CT, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  76. National Society United States Daughters of 1812

    EIN 066042243 · Headquarters: Enfield, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  77. National Sorority of Phi Delta Kappa Inc

    EIN 521269195 · Headquarters: New Haven, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  78. National Speakers Association - Ct

    EIN 043735839 · Headquarters: MANSFIELD, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  79. National Staff Organization

    EIN 066206678 · Headquarters: Suffield, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  80. National Taiwan University Medical College Alumni Assoc Inc

    EIN 112439269 · Headquarters: Farmington, CT, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  81. National Theatre of the Deaf-CT

    EIN 851968622 · Headquarters: West Hartford, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  82. National Treasury Employees Union

    EIN 066064030 · Headquarters: Hartford, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  83. National Treasury Employees Union

    EIN 066199393 · Headquarters: Milford, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  84. National Treasury Employees Union

    EIN 272130066 · Headquarters: CROMWELL, CT, US · Employment · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  85. National Veterans Council for Legal Redress Inc

    EIN 471280751 · Headquarters: New Haven, CT, US · Public & Societal Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  86. National Volumetric Mixer Association Inc

    EIN 061578382 · Headquarters: MIDDLETOWN, CT, USA · Mutual & Membership Benefit · Latest available filing year: 2019 · Primary form: IRS Form 990-EZ

  87. Nations Destiny Enterprise USA Inc

    EIN 264062303 · Headquarters: Newington, CT, USA · Religion Related · Latest available filing year: 2024 · Primary form: IRS Form 990

  88. Nations Tribes Peoples and Tongues

    EIN 814858900 · Headquarters: Wethersfield, CT, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  89. Native American Mohegans Inc

    EIN 061515700 · Headquarters: Norwich, CT, US · Arts, Culture & Humanities · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  90. Native American Yes We Can Foundation

    EIN 461757848 · Headquarters: SOUTHPORT, CT, USA · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  91. Natl Society Women Descendants of the Ancient & Honorable Artillery

    EIN 066075572 · Headquarters: BRISTOL, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  92. Natural Chi Foundation Inc

    EIN 010928790 · Headquarters: WOODBRIDGE, CT, USA · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  93. Natural Dividends Inc

    EIN 851218753 · Headquarters: West Hartford, CT, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  94. Nature Initiative Inc

    EIN 550903854 · Headquarters: ROWAYTON, CT, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  95. Naubesatuck Watershed Council Inc

    EIN 061569352 · Headquarters: Willimantic, CT, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  96. Naubuc Fire Department Incorporated

    EIN 392132347 · Headquarters: Glastonbury, CT, US · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  97. Naubuc School Parent Teacher Organization

    EIN 061044655 · Headquarters: Glastonbury, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  98. Naugatuck Administrative Negotiatin Association

    EIN 061261916 · Headquarters: Naugatuck, CT, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  99. Naugatuck Ambulance Corps Inc

    EIN 061407577 · Headquarters: NAUGATUCK, CT, USA · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2024 · Primary form: IRS Form 990

  100. Naugatuck Babe Ruth League Inc

    EIN 066041317 · Headquarters: Naugatuck, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

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