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. Orange Hall Corp

    EIN 066057744 · Headquarters: Manchester, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  2. Orange Hills Country Club Mens Associationinc

    EIN 061315957 · Headquarters: ORANGE, CT, USA · Recreation & Sports · Latest available filing year: 2011 · Primary form: IRS Form 990-EZ

  3. Orange Historical Society Inc

    EIN 510192522 · Headquarters: Orange, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  4. Orange Land Trust Inc

    EIN 237067509 · Headquarters: Orange, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  5. Orange Lions Charities Inc

    EIN 270846799 · Headquarters: ORANGE, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  6. Orange Little League Inc C/o Jennifer Schempp Treas

    EIN 061311047 · Headquarters: ORANGE, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  7. Orange Penguin Foundation

    EIN 453008410 · Headquarters: New Fairfield, CT, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. Orange Players Association Incorporated

    EIN 060938797 · Headquarters: Orange, CT, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  9. Orange Scholarship Fund

    EIN 237105419 · Headquarters: Orange, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  10. Orange Soccer Association

    EIN 061259519 · Headquarters: Orange, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  11. Orange Volunteer Fire Assoc Inc

    EIN 066046688 · Headquarters: ORANGE, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  12. Oratory of Jesus Inc

    EIN 061580646 · Headquarters: ELMWOOD, CT, US · Religion Related · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  13. Oratory of the Little Way Inc

    EIN 066079146 · Headquarters: OLD GREENWICH, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  14. Oraysa Inc

    EIN 853757623 · Headquarters: WATERBURY, CT, USA · Education · Latest available filing year: 2025 · Primary form: IRS Form 990

  15. Orchard Acres Water Association Inc

    EIN 060972537 · Headquarters: Windsor, CT, US · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  16. Orchard Hill Club Inc

    EIN 060758748 · Headquarters: GLASTONBURY, CT, USA · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990

  17. Orchard Hill Parent Teachers Organization

    EIN 222816555 · Headquarters: South Windsor, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  18. Orchard Road Association Inc

    EIN 832072703 · Headquarters: WEST HARTFORD, CT, US · Housing & Shelter · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  19. Orchestra Lumos Inc

    EIN 066100039 · Headquarters: STAMFORD, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  20. Orchestra New England

    EIN 680597733 · Headquarters: New Haven, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  21. Orchids of Life Llc

    EIN 461411600 · Headquarters: STAMFORD, CT, US · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  22. Order of Ahepa Chapter No 117

    EIN 237566091 · Headquarters: NEW BRITAIN, CT, USA · Mutual & Membership Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990

  23. Order of Amaranth Inc

    EIN 237614061 · Headquarters: Stratford, CT, US · Crime & Legal Related · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  24. Order of Centurions Inc

    EIN 223061142 · Headquarters: Branford, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  25. Order of Eastern Star Connecticut

    EIN 237126118 · Headquarters: Branford Center, CT, US · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  26. Order of Eastern Star Inc of Connecticut

    EIN 066040996 · Headquarters: Canterbury, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  27. Order of Hermanns Sons Inc

    EIN 066040897 · Headquarters: Guilford, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  28. Order of Runeberg Lodge 205 New Haven

    EIN 237548187 · Headquarters: Guilford, CT, US · Education · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  29. Order of Runeberg Supreme Lodge

    EIN 910563434 · Headquarters: Guilford, CT, US · Mutual & Membership Benefit · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  30. Order of the Alhambra

    EIN 237505653 · Headquarters: Stratford, CT, US · Mutual & Membership Benefit · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  31. Order of the Amaranth Inc Supreme Council

    EIN 237614041 · Headquarters: Shelton, CT, US · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  32. Order of the Amaranth Inc Supreme Council

    EIN 237614045 · Headquarters: Meriden, CT, US · Crime & Legal Related · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  33. Order of the Amaranth Inc Supreme Council

    EIN 237614048 · Headquarters: Middletown, CT, US · Crime & Legal Related · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  34. Order of the Amaranth Inc Supreme Council

    EIN 237614052 · Headquarters: Canterbury, CT, US · Mutual & Membership Benefit · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  35. Order of the Amaranth Inc Supreme Council

    EIN 237614058 · Headquarters: Coventry, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  36. Order of the Amaranth Inc Supreme Council

    EIN 237614059 · Headquarters: Trumbull, CT, US · Crime & Legal Related · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  37. Order of the Amaranth Inc Supreme Council

    EIN 237614062 · Headquarters: Madison, CT, US · Crime & Legal Related · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  38. Order of the Amaranth Supreme

    EIN 060368145 · Headquarters: Canterbury, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  39. Order of the Descendents of Pirates and Privateers

    EIN 833568410 · Headquarters: Northfield, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  40. Order of the Eastern Star Inc of Connecticut

    EIN 060940428 · Headquarters: Milford, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  41. Order of the Eastern Star Inc of Connecticut

    EIN 060941325 · Headquarters: Shelton, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  42. Order of the Eastern Star Inc of Connecticut

    EIN 060944085 · Headquarters: Meridan, CT, US · Mutual & Membership Benefit · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  43. Order of the Eastern Star Inc of Connecticut

    EIN 060944225 · Headquarters: LAKESIDE, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  44. Order of the Eastern Star Inc of Connecticut

    EIN 066039788 · Headquarters: Cromwell, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  45. Order of the Eastern Star Inc of Connecticut

    EIN 222806978 · Headquarters: Danbury, CT, US · Mutual & Membership Benefit · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  46. Order of the Eastern Star Inc of Connecticut

    EIN 237126114 · Headquarters: Monroe, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  47. Order of the Eastern Star Inc of Connecticut

    EIN 237126120 · Headquarters: Bristol, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  48. Order of the Eastern Star Inc of Connecticut

    EIN 237126122 · Headquarters: Newington, CT, US · Mutual & Membership Benefit · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  49. Order of the Eastern Star Inc of Connecticut

    EIN 237126124 · Headquarters: Baltic, CT, US · Mutual & Membership Benefit · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  50. Order of the Eastern Star Inc of Connecticut

    EIN 237128225 · Headquarters: Stratford, CT, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  51. Order of the Eastern Star Inc of Connecticut

    EIN 237128232 · Headquarters: Canterbury, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  52. Order of the Eastern Star Inc of Connecticut

    EIN 237128235 · Headquarters: Lyme, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  53. Order of the Eastern Star Inc of Connecticut

    EIN 237128241 · Headquarters: Terryville, CT, US · Mutual & Membership Benefit · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  54. Order of the Eastern Star Inc of Connecticut

    EIN 237128253 · Headquarters: Amston, CT, US · Mutual & Membership Benefit · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  55. Order of the Eastern Star Inc of Connecticut

    EIN 237128256 · Headquarters: Enfield, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  56. Order of the Eastern Star Inc of Connecticut

    EIN 237128258 · Headquarters: Preston, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  57. Order of the Eastern Star Inc of Connecticut

    EIN 237128260 · Headquarters: Ellington, CT, US · Mutual & Membership Benefit · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  58. Order of the Eastern Star Inc of Connecticut

    EIN 237128268 · Headquarters: Simsbury, CT, US · Mutual & Membership Benefit · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  59. Order of the Eastern Star Inc of Connecticut

    EIN 237128271 · Headquarters: Monroe, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  60. Order of the Eastern Star Inc of Connecticut

    EIN 237128275 · Headquarters: Wallingford, CT, US · Mutual & Membership Benefit · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  61. Order of the Eastern Star Inc of Connecticut

    EIN 237128277 · Headquarters: New Haven, CT, US · Mutual & Membership Benefit · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  62. Order of the Eastern Star Inc of Connecticut

    EIN 237128278 · Headquarters: Waterbury, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  63. Order of the Eastern Star Inc of Connecticut

    EIN 237128281 · Headquarters: Enfield, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  64. Order of the Eastern Star Inc of Connecticut

    EIN 237128282 · Headquarters: East Lyme, CT, US · Mutual & Membership Benefit · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  65. Order of the Eastern Star Inc of Connecticut

    EIN 237128285 · Headquarters: Pomfret Center, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  66. Order of the Eastern Star Inc of Connecticut

    EIN 237128287 · Headquarters: WATERBURY, CT, US · Mutual & Membership Benefit · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  67. Order of the Eastern Star Inc of Connecticut

    EIN 237134283 · Headquarters: Columbia, CT, US · Mutual & Membership Benefit · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  68. Order of the Eastern Star Inc of Connecticut

    EIN 237539135 · Headquarters: Torrington, CT, US · Mutual & Membership Benefit · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  69. Order of the Eastern Star Inc of Connecticut

    EIN 237539140 · Headquarters: Canterbury, CT, US · Mutual & Membership Benefit · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  70. Order of the Eastern Star Inc of Connecticut

    EIN 273731895 · Headquarters: Wallingford, CT, US · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. Order of the Eastern Star of Connecticut

    EIN 237128236 · Headquarters: Cheshire, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  72. Order of the Founders & Patriots of America

    EIN 814559621 · Headquarters: Bethel, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  73. Order of the Knights of Rizal New Haven Chapter Inc

    EIN 061631519 · Headquarters: West Haven, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  74. Order of the White Shrine of Jerusalem

    EIN 066065798 · Headquarters: Coventry, CT, US · Mutual & Membership Benefit · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  75. Order of the White Shrine of Jerusalem

    EIN 237514182 · Headquarters: Coventry, CT, US · Mutual & Membership Benefit · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  76. Order Sons & Daughters of Italy Connecticut Grand Lodge Foundation

    EIN 823049788 · Headquarters: SHELTON, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2019 · Primary form: IRS Form 990-PF

  77. Orderup Inc

    EIN 475002024 · Headquarters: DANBURY, CT, US · Employment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  78. Oregon's Health Co-op

    EIN 453321455 · Headquarters: FARMINGTON, CT, USA · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990

  79. Orfeo Project

    EIN 413689611 · Headquarters: Greenwich, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  80. Orford Village Housing Development Corp C/o Malcolm Barlow Atty

    EIN 061428945 · Headquarters: MANCHESTER, CT, USA · Housing & Shelter · Latest available filing year: 2025 · Primary form: IRS Form 990

  81. Org Intl Amor Y Verdad Ministry Inc

    EIN 882049521 · Headquarters: New Britain, CT, USA · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  82. Organic Barrow Company

    EIN 862748304 · Headquarters: Darien, CT, US · Food, Agriculture & Nutrition · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  83. Organizacion Esperanza

    EIN 931451648 · Headquarters: Danbury, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  84. Organization for Refugee Integration Migration and Equal Ri

    EIN 332972833 · Headquarters: Manchester, CT, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  85. Organization of Chinese Americans Fairfield County Inc

    EIN 061157366 · Headquarters: Stamford, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  86. Organization of Municipal Employees Town of Deep River

    EIN 061175170 · Headquarters: Deep River, CT, US · Employment · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  87. Organized Kare for Kids Inc

    EIN 061240702 · Headquarters: LEDYARD, CT, US · Human Services · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  88. Organized Parents Make a Difference Inc

    EIN 061420323 · Headquarters: HARTFORD, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  89. Orgarnization of Collinoises of Aquin for the Development In Haiti OCADH

    EIN 874756485 · Headquarters: Stamford, CT, USA · Human Services · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  90. Oriental Lodge No 6 Free & Accepted Masons Prince Hall Incorporated

    EIN 237636189 · Headquarters: New Haven, CT, US · Mutual & Membership Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  91. Origami Innovations Inc

    EIN 824820620 · Headquarters: NEW HAVEN, CT, USA · Community Improvement & Capacity Building · Latest available filing year: 2018 · Primary form: IRS Form 990-EZ

  92. Origin Foundation Inc

    EIN 923895293 · Headquarters: New Haven, CT, US · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  93. Original Waterford Community Band

    EIN 465561983 · Headquarters: Waterford, CT, US · Arts, Culture & Humanities · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  94. Original Works Inc

    EIN 061537372 · Headquarters: Hamden, CT, US · Arts, Culture & Humanities · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  95. Ormah Corp

    EIN 992390917 · Headquarters: WATERBURY, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  96. Ormont Unit 69 American Legion Auxiliary Portland Connecticut

    EIN 352374591 · Headquarters: Portland, CT, US · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  97. Oronoque Village Garden Club

    EIN 060943243 · Headquarters: STRATFORD, CT, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  98. Orphants Foundation Maman Ale and Nazzarette Inc

    EIN 364791191 · Headquarters: ENFIELD, CT, USA · Housing & Shelter · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  99. Orthopaedic Foundation for Active Lifestyles Inc

    EIN 061605002 · Headquarters: STAMFORD, CT, USA · Medical Research · Latest available filing year: 2024 · Primary form: IRS Form 990

  100. Orthopaedic Specialty Group Education Fo

    EIN 270374786 · Headquarters: FAIRFIELD, CT, USA · International, Foreign Affairs & National Security · Latest available filing year: 2024 · Primary form: IRS Form 990

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