Unknown & Unclassified nonprofits in Connecticut

Unknown & Unclassified nonprofits in Connecticut. Browse 7,402 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. Martin House Inc

    EIN 061064857 · Headquarters: Norwich, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  2. Mary Buel Memorial Inc

    EIN 061265383 · Headquarters: LITCHFIELD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  3. Mary E Branigan Trust

    EIN 066036344 · Headquarters: NORWICH, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  4. Mary Jane Lane Road Association Inc

    EIN 061376815 · Headquarters: Westport, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  5. Mary Jobe Ackley Trust & Peace Sanctuary

    EIN 066089224 · Headquarters: MYSTIC, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  6. Mary Lloyd Ferrucci & Charles Ferrucci Jr Family Foundation

    EIN 922277593 · Headquarters: Farmington, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  7. Mary V Ricci Trust

    EIN 066108041 · Headquarters: WATERBURY, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  8. Mary's Place Inc

    EIN 061462376 · Headquarters: WINDSOR, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  9. Maryheart Crusaders Inc

    EIN 066079145 · Headquarters: MERIDEN, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  10. Mashapaug Lake Association Inc

    EIN 061308037 · Headquarters: Union, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  11. Mason Contractors Association of Connecticut Inc

    EIN 060940503 · Headquarters: GRANBY, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  12. Masonic Building Association of Enfield

    EIN 066050529 · Headquarters: Suffield, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. Masonic Building Corporation of Woodstock Ct

    EIN 593792534 · Headquarters: Woodstock, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  14. Masonic Charity & Educational Assn Inc

    EIN 060676335 · Headquarters: Willimantic, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  15. Masonic Temple Assoc of Danbury CT

    EIN 060443431 · Headquarters: Danbury, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  16. Masonic Temple Association

    EIN 066071609 · Headquarters: RIDGEFIELD, CT, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  17. Masonic Temple Association of East Hampton Connecticut Inc

    EIN 066050659 · Headquarters: East Hampton, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  18. Masonic Temple Association of Fayette Lodge 69 Inc

    EIN 060787365 · Headquarters: Ellington, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  19. Masonic Temple Association of New Haven Connecticut Inc

    EIN 060443433 · Headquarters: NEW HAVEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  20. Masonic Temple Association of Stratford Inc

    EIN 066057887 · Headquarters: STRATFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  21. Masonic Temple Corp

    EIN 060443441 · Headquarters: Preston, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  22. Masonic Temple Corporation of New Britain

    EIN 061497728 · Headquarters: NEW BRITAIN, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  23. Masons Island Yacht Club Inc

    EIN 060714276 · Headquarters: MYSTIC, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  24. Mass Glass Dealers Association C/o Tcors

    EIN 042577680 · Headquarters: GLASTONBURY, CT, USA · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  25. Massachusetts Independent Physician Practice Association Inc

    EIN 993397711 · Headquarters: STAMFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  26. Mather Cemetery Association Inc

    EIN 066070029 · Headquarters: Norwalk, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  27. Mattabeseck Audubon Society Inc

    EIN 237400565 · Headquarters: Middletown, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  28. Mattatuck Astronomical Society C/o Math Science Div

    EIN 061156139 · Headquarters: BETHLEHEM, CT, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  29. Mattatuck Drum Band Inc

    EIN 066062447 · Headquarters: Waterbury, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  30. Matulaitis Nursing Home Inc

    EIN 060983700 · Headquarters: PUTNAM, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  31. Maud Glover Folsom Foundation Inc

    EIN 111965890 · Headquarters: SIMSBURY, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  32. Maury and Sonia Cohn Foundation Inc

    EIN 066050830 · Headquarters: NORWICH, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  33. Mawuena Ministries

    EIN 823915853 · Headquarters: Bloomfield, CT, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  34. Max & Helen Abrams Foundation Inc

    EIN 136090811 · Headquarters: STAMFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  35. Max and Bertha Dressler Foundation

    EIN 366108636 · Headquarters: ROXBURY, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  36. Mayflower Pembroke Welsh Corgi Club

    EIN 061182896 · Headquarters: LEBANON, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  37. Mbi Voluntary Employees Beneficiary Association

    EIN 061387008 · Headquarters: Norwalk, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  38. Mccall Foundation Inc

    EIN 060961756 · Headquarters: TORRINGTON, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  39. McLeod Blue Skye Charitable Foundation Inc

    EIN 223216389 · Headquarters: Branford, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  40. Meadowbrook Cooperative Club Inc

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

  41. Meadows Real Estate Management and Development Corporation

    EIN 061203983 · Headquarters: HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  42. Meals-on-wheels Inc

    EIN 060809614 · Headquarters: GREENWICH, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  43. Mechanical Contractors Association Connecticut Industry Fund

    EIN 061401623 · Headquarters: SOUTHINGTON, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  44. Mechanical Contractors Association of Connecticut Inc

    EIN 060874283 · Headquarters: SOUTHINGTON, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  45. Medical and Dental Staff Fund St Francis Hospital & Medical Center

    EIN 061049909 · Headquarters: HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  46. Medical Assistance Corporation

    EIN 223026260 · Headquarters: Stamford, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  47. Meeting Professionals International

    EIN 061065513 · Headquarters: Vernon, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  48. Meisenheimer Foundation Inc

    EIN 061336907 · Headquarters: MILFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  49. Melamid International Foundation Inc

    EIN 133263278 · Headquarters: WALLINGFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-PF

  50. Melissa Makes Bears Llc

    EIN 270504031 · Headquarters: SOUTH WINDSOR, CT, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  51. Melryder Foundation Inc

    EIN 061470172 · Headquarters: STAMFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  52. Melsopp & Mills Nalc Merged Branch 60

    EIN 066050425 · Headquarters: Stamford, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  53. Melville Charitable Trust

    EIN 133415258 · Headquarters: NEW HAVEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  54. Melvin & Caryl Goldstein Charitable Foundation

    EIN 222764711 · Headquarters: Stamford, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  55. Memorial Golf Outing

    EIN 465028626 · Headquarters: Southington, CT, US · Unknown & Unclassified · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  56. Memorial Military Museum Inc

    EIN 510148048 · Headquarters: Bristol, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  57. Men's Club of Jhe of Ffld County Inc

    EIN 222522138 · Headquarters: BRIDGEPORT, CT, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  58. Mens Auxiliary to the Vfw Post 10060

    EIN 471738571 · Headquarters: UNCASVILLE, CT, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  59. Mercy Learning Center of Bridgeport Inc

    EIN 222859879 · Headquarters: BRIDGEPORT, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  60. Mergingarts Productions

    EIN 272478212 · Headquarters: Southington, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  61. Meriden Antique Veterans Inc

    EIN 852855805 · Headquarters: MERIDEN, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  62. Meriden Boys Club End Fd (P)

    EIN 066183824 · Headquarters: WATERBURY, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  63. Meriden Cemetery Association

    EIN 060449750 · Headquarters: MERIDEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  64. Meriden Economic Development Corp

    EIN 061007618 · Headquarters: MERIDEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  65. Meriden Elks #35 BPOE

    EIN 060258864 · Headquarters: Meriden, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  66. Meriden Federation of Municipal Employees Local 1478

    EIN 061330378 · Headquarters: MERIDEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  67. Meriden Federation of Teachers

    EIN 222586693 · Headquarters: MERIDEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  68. Meriden Land Trust Inc

    EIN 226561302 · Headquarters: MERIDEN, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  69. Meriden Lions Welfare Projects Inc

    EIN 066045945 · Headquarters: MERIDEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  70. Meriden Masonic Temple Foundation

    EIN 060449853 · Headquarters: MERIDEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  71. Meriden Police Benevolent and Fraternal Organization

    EIN 061081268 · Headquarters: MERIDEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  72. Meriden Rod & Gun Club Inc

    EIN 061306915 · Headquarters: MERIDEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  73. Meriden Ski & Snowboard Club Incorporated

    EIN 332634553 · Headquarters: Niantic, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  74. Meriden Soccer Club Inc

    EIN 061267957 · Headquarters: MERIDEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  75. Meriden Soup Kitchen Inc

    EIN 222519321 · Headquarters: MERIDEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  76. Meriden Wallingford Cheshire Dental Society Inc

    EIN 061603868 · Headquarters: WALLINGFORD, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  77. Merryall Community Center Inc

    EIN 066046403 · Headquarters: NEW MILFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  78. Merwinsville Hotel Restoration Inc

    EIN 060907886 · Headquarters: Gaylordsville, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  79. Metacon Gun Club Inc

    EIN 060797191 · Headquarters: SIMSBURY, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  80. Metal Manufacturers Education and Training Alliance Inc

    EIN 680490806 · Headquarters: Bridgeport, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  81. Metropolitan Association of Professional Travel Agents Inc

    EIN 133860518 · Headquarters: STAMFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  82. Metropolitan District Employees Credit Union Inc

    EIN 060709551 · Headquarters: HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  83. Metropolitan District Supervisors Union

    EIN 061058925 · Headquarters: TORRINGTON, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  84. Miamogue Yacht Club Inc

    EIN 060451640 · Headquarters: Bridgeport, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  85. Michaels Family Foundation Inc

    EIN 237055684 · Headquarters: Shelton, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  86. Michele and Donald Damour Family Foundation

    EIN 880724982 · Headquarters: SOMERS, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  87. Mid Fairfield AIDS Project

    EIN 061229965 · Headquarters: NORWALK, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  88. Mid Fairfield County Assoc of Realtors

    EIN 060605691 · Headquarters: WESTPORT, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  89. Mid-fairfield Child Guidance Center Inc

    EIN 060725052 · Headquarters: NORWALK, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  90. Mid-hudson Radio Control Society Inc

    EIN 237139759 · Headquarters: Newtown, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  91. Mid-State Association of Realtors Inc

    EIN 060955805 · Headquarters: Plainville, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  92. Middesex Professional Services Foundation Inc

    EIN 432084309 · Headquarters: MIDDLETOWN, CT, USA · Unknown & Unclassified · Latest available filing year: 2012 · Primary form: IRS Form 990-EZ

  93. Middle City Stage Company

    EIN 264394925 · Headquarters: Middletown, CT, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  94. Middle Gate Elementary Pta

    EIN 066169671 · Headquarters: NEWTOWN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  95. Middlebury Historical Society Inc

    EIN 060950841 · Headquarters: MIDDLEBURY, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  96. Middlebury Police Benevolent Association Inc

    EIN 060940570 · Headquarters: MIDDLEBURY, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  97. Middlebury Senior Housing Associates Inc - Woodside Heights

    EIN 222976661 · Headquarters: MIDDLEBURY, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  98. Middlebury Swimming Club Inc

    EIN 060643260 · Headquarters: Prospect, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  99. Middlebury Volunteer Fire Department Inc

    EIN 060983496 · Headquarters: MIDDLEBURY, CT, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  100. Middlefield Cemetery Association

    EIN 060765380 · Headquarters: Rockfall, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

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