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. Ukrainian National Association Inc

    EIN 237530294 · Headquarters: WHETHERFIELD, CT, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  2. Ukrainian National Association Inc

    EIN 237530392 · Headquarters: WILLAMANTIC, CT, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  3. Ukrainian National Association Inc

    EIN 237530405 · Headquarters: WALLINGFORD, CT, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  4. Ukrainian National Womens League of America Inc

    EIN 237108640 · Headquarters: West Haven, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  5. Ukrainian National Womens League of America Inc

    EIN 815483755 · Headquarters: Stratford, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  6. Ukranian National Womens League of America Inc

    EIN 352678926 · Headquarters: Wilton, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  7. Ukranian Orthodox Church of St Mary's Protection

    EIN 222466674 · Headquarters: BRIDGEPORT, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-T

  8. Ulysses S Grant Foundation

    EIN 066071625 · Headquarters: NEW HAVEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  9. Umpawaug Burial Ground Association

    EIN 066054681 · Headquarters: Redding, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  10. Unbound Collective

    EIN 413631910 · Headquarters: Westport, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  11. Uncas Council No 32 Knights of Columbus

    EIN 205670956 · Headquarters: Unionville, CT, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  12. Undies Project Inc

    EIN 814243048 · Headquarters: COS COB, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  13. Unico Club of Waterbury Inc

    EIN 066046913 · Headquarters: WATERBURY, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  14. Unico National

    EIN 060347921 · Headquarters: BRISTOL, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  15. Unico National

    EIN 060980251 · Headquarters: Watertown, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  16. Unico National

    EIN 061463536 · Headquarters: Stamford, CT, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  17. Unico National

    EIN 061472361 · Headquarters: WETHERSFIELD, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  18. Unico National

    EIN 066086735 · Headquarters: New Britain, CT, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  19. Unico National

    EIN 066086738 · Headquarters: SHELTON, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  20. Unico National

    EIN 237074221 · Headquarters: Manchester, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  21. Unico National

    EIN 237251951 · Headquarters: Newington, CT, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  22. Unico National Torrington

    EIN 066086737 · Headquarters: TORRINGTON, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  23. Unico National Wethersfield Chapter

    EIN 061276150 · Headquarters: WETHERSFIELD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  24. Union Agricultural Society Inc

    EIN 066065810 · Headquarters: SOMERS, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  25. Union Agricultural Society of Barkhamsted Colebrook & Hartland

    EIN 060604721 · Headquarters: RIVERTON, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  26. Union Baptist Church

    EIN 066052205 · Headquarters: E KILLINGLY, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  27. Union Cemetery Association Inc

    EIN 060602016 · Headquarters: Stratford, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  28. Union Cemetery Association of Easton

    EIN 932917873 · Headquarters: Easton, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  29. Union Cemetery Association of Waterford

    EIN 222548552 · Headquarters: Waterford, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  30. Union City Polish American Benefit Society Inc

    EIN 066073119 · Headquarters: NAUGATUCK, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  31. Union City Polish American Club Inc

    EIN 060569390 · Headquarters: NAUGATUCK, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  32. Union Lodge No5AF & AM Stamford CT

    EIN 066050839 · Headquarters: Stamford, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  33. Union Memorial Preschool Pto

    EIN 994792955 · Headquarters: STAMFORD, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  34. Unionville Masonic Building Association Inc

    EIN 066048758 · Headquarters: Unionville, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  35. Unionville Museum Inc

    EIN 222589034 · Headquarters: Unionville, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  36. Uniroyal Holding Inc Welfare Benefit Trust 22-30959

    EIN 061426852 · Headquarters: NAUGATUCK, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  37. Uniroyal Holding Inc Welfare Benefit Trust Ii

    EIN 061508704 · Headquarters: NAUGATUCK, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  38. Unite Here 217 Local

    EIN 060694008 · Headquarters: NEW HAVEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  39. Unite Here 34 Local Fue

    EIN 061048535 · Headquarters: NEW HAVEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  40. Unite Here 35 Local Fue

    EIN 060835624 · Headquarters: NEW HAVEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  41. Unite Here Local 33 Graduate Employees at Yale

    EIN 814521938 · Headquarters: NEW HAVEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  42. United Assoc of Journeymen & Apprentof the Plumb& Pipefitting Ind Local 777

    EIN 061390416 · Headquarters: MERIDEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  43. United Association of Journeymen & Appre New England States Pipe Trades Assn

    EIN 222921877 · Headquarters: MERIDEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  44. United Auto Aerospace And

    EIN 237170577 · Headquarters: WEST HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990

  45. United Auto Workers Local 376

    EIN 060568444 · Headquarters: WEST HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  46. United Brotherhood of Carpenters and Joiners of America

    EIN 060795434 · Headquarters: GROTON, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  47. United Cerebral Palsy Association of Eastern Connecticut

    EIN 060792820 · Headquarters: Quaker Hill, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  48. United Community and Family Servicesinc

    EIN 060653142 · Headquarters: NORWICH, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  49. United Elec Rad Mach Workers of Amer

    EIN 060523359 · Headquarters: NEW HAVEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  50. United Elecrical Radio and Machine Workers of America

    EIN 061424285 · Headquarters: SOUTH GLASTONBURY, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  51. United Elecricial Radio and Machine Worker of America

    EIN 061432707 · Headquarters: Wallingford, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  52. United Electrical Radio & Machine Workers of America

    EIN 010441453 · Headquarters: Suffield, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  53. United Electrical Radio & Machine Workers of America

    EIN 061332114 · Headquarters: East Berlin, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  54. United Electrical Radio & Machine Workers of America

    EIN 061489991 · Headquarters: Old Saybrook, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  55. United Electrical Radio & Machine Workers of America

    EIN 900584008 · Headquarters: suffield, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  56. United Electrical Radio and Machine Worker of America

    EIN 061470053 · Headquarters: East Windsor, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  57. United Electrical Radio and Machine Worker of America

    EIN 900584830 · Headquarters: yalesville, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  58. United Electrical Radio and Machine Worker of America

    EIN 900599490 · Headquarters: Windsor Locks, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  59. United Electrical Radio and Machine Workers of America

    EIN 061135992 · Headquarters: vernon, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  60. United Electrical Radio and Machine Workers of America

    EIN 061421129 · Headquarters: Simsbury, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  61. United Electrical Radio and Machine Workers of America

    EIN 061437109 · Headquarters: Canton, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  62. United Electrical Radio and Machine Workers of America

    EIN 272540902 · Headquarters: New Britain, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  63. United Electrical Radio and Machine Workers of America

    EIN 460844981 · Headquarters: Stafford, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  64. United Electrical Radio and Machine Workers of America

    EIN 460854794 · Headquarters: Branford, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  65. United Electrical Radio and Machine Workers of America

    EIN 562579807 · Headquarters: STONINGTON, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  66. United Electrical Radio and Machine Workers of America

    EIN 753260077 · Headquarters: Wethersfield, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  67. United Electrical Radio and Machine Workers of America

    EIN 841677318 · Headquarters: Hamden, CT, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  68. United Electrical Radio and Machine Workers of America

    EIN 900601915 · Headquarters: Yalesville, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  69. United Electrical Radio and Machine Workers of America

    EIN 900614285 · Headquarters: Wallingford, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  70. United Electrical Radio and Machine Workers of America

    EIN 900652836 · Headquarters: Yalesville CT, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. United Food & Commercial Workers Local 371

    EIN 060605499 · Headquarters: WESTPORT, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  72. United Food & Commercial Workers Union

    EIN 060721822 · Headquarters: Farmington, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  73. United Food and Commercial Workers International Union

    EIN 060728166 · Headquarters: WALLINGFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  74. United Grand Imperial Coun Knights of Red Cross of Constantine

    EIN 237617416 · Headquarters: Middletown, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  75. United Jewish Federation Stamford New Canaan Darien Inc

    EIN 060923384 · Headquarters: STAMFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  76. United Muslim Masjid of CT

    EIN 061359565 · Headquarters: Waterbury, CT, US · Unknown & Unclassified · Latest available filing year: 2011 · Primary form: IRS Form 990-EZ

  77. United Nurses and Allied Professionals

    EIN 061569824 · Headquarters: PUTNAM, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  78. United Social & Mental Health Resources Inc

    EIN 222896309 · Headquarters: DAYVILLE, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  79. United Social & Mental Health Services Inc

    EIN 222911611 · Headquarters: DAYVILLE, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  80. United Souls for Women Inc

    EIN 844862177 · Headquarters: Trumbull, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  81. United States Aikido Federation

    EIN 133015810 · Headquarters: LITCHFIELD, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  82. United States Amateur Boxing Inc

    EIN 061322533 · Headquarters: East Haven, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  83. United States America Plowing Organization

    EIN 416042586 · Headquarters: Wethersfield, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  84. United States Corporate Track Association

    EIN 770114689 · Headquarters: west simsbury, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  85. United States Diving Inc

    EIN 815018448 · Headquarters: Bridgeport, CT, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  86. United States Masters Swimming Inc

    EIN 311131707 · Headquarters: Weston, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  87. United States Naval Academy Class of 1965 Area Alumni Chapter

    EIN 521370275 · Headquarters: Stamford, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  88. United States Power Squadrons

    EIN 066045953 · Headquarters: Ridgefield, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  89. United States Power Squadrons

    EIN 066045978 · Headquarters: Stamford, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  90. United States Power Squadrons

    EIN 066046446 · Headquarters: DARIEN, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  91. United States Power Squadrons

    EIN 066047498 · Headquarters: Colchester, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  92. United States Power Squadrons

    EIN 066048044 · Headquarters: GREENWICH, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  93. United States Power Squadrons

    EIN 066051498 · Headquarters: Middletown, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  94. United States Power Squadrons

    EIN 066051632 · Headquarters: Prospect, CT, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  95. United States Power Squadrons

    EIN 066055634 · Headquarters: Avon, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  96. United States Power Squadrons

    EIN 066063086 · Headquarters: Westport, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  97. United States Power Squadrons

    EIN 066066030 · Headquarters: Naugatuck, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  98. United States Power Squadrons

    EIN 066066182 · Headquarters: Newtown, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  99. United States Power Squadrons

    EIN 066067370 · Headquarters: new britain, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  100. United States Power Squadrons

    EIN 066068846 · Headquarters: Essex, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

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