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. Hva Foundation Inc

    EIN 061402968 · Headquarters: CORNWALL BRIDGE, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  2. Hy D Davis Moose Legion No 8

    EIN 060623713 · Headquarters: East Hartford, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  3. Hydrographic Socety of America Inc

    EIN 521332749 · Headquarters: CHESHIRE, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  4. Hygienic Art Inc

    EIN 061207314 · Headquarters: NEW LONDON, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  5. Hysa Inc

    EIN 061267536 · Headquarters: HARWINTON, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  6. I B E W Local Union # 747 C/o Sean Roberts

    EIN 066068779 · Headquarters: CHESHIRE, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  7. Iaep Local R01-604

    EIN 993484346 · Headquarters: Trumbull, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. Iaff 998 Stratford

    EIN 066045695 · Headquarters: STRATFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  9. Iamaw Local Lodge 1871

    EIN 060607894 · Headquarters: GROTON, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  10. Ibell Jacobson Smith Unit 61 Ala

    EIN 900457229 · Headquarters: Deep River, CT, US · Unknown & Unclassified · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  11. Ibew Local 488 Labor Management Cooperation Trust

    EIN 462805810 · Headquarters: MONROE, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  12. Ibew Local Union 90 Benefit Fund

    EIN 060712954 · Headquarters: WALLINGFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  13. Ibew Local Union No 90 Cobra Subsidy Benefit Fund

    EIN 061332523 · Headquarters: WALLINGFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  14. Ibew New England Utility Council

    EIN 993445200 · Headquarters: WATERBURY, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  15. Ibpo Local 332 Wolcott Police Depar Tment

    EIN 010690921 · Headquarters: WOLCOTT, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  16. Ibt Local 145 Health Services Insurance Plan

    EIN 060711441 · Headquarters: STRATFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  17. Idaho Frg

    EIN 862447012 · Headquarters: Groton, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  18. If Hummingbird Foundation Inc

    EIN 061314468 · Headquarters: GREENWICH, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  19. Iglesia Apostolica Del Nombre De Jesus

    EIN 473441896 · Headquarters: New Haven, CT, US · Unknown & Unclassified · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  20. Iglesia De Cristo Ministerios Ebenezer Westc

    EIN 472983829 · Headquarters: SHELTON, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  21. Iglesia De Juda Monte De Sion

    EIN 272283323 · Headquarters: BRIDGEPORT, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  22. Iglesia Luz De Vida

    EIN 842906748 · Headquarters: wolcott, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  23. Im-safe Institute Inc

    EIN 273397033 · Headquarters: Simsbury, CT, US · Unknown & Unclassified · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  24. Imagine College Ct

    EIN 923819982 · Headquarters: West Simsbury, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  25. Immanuel Church Housing Corporation

    EIN 066089863 · Headquarters: Hartford, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  26. Improved Benevolent & Protective Order of Elks of the World

    EIN 060470624 · Headquarters: Hartford, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  27. Improved Benevolent & Protective Order of Elks of the World

    EIN 510181499 · Headquarters: Bristol, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  28. Improved Benevolent & Protective Order of Elks of the World

    EIN 510207794 · Headquarters: Hartford, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  29. Improved Benevolent & Protective Order of Elks of the World

    EIN 510210766 · Headquarters: Bridgeport, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  30. Improved Benevolent & Protective Order of Elks of the World

    EIN 510214868 · Headquarters: New Haven, CT, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  31. Imran Khan Cancer Appeal Inc

    EIN 133626299 · Headquarters: FARMINGTON, CT, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  32. In Care of Dad

    EIN 473067601 · Headquarters: Stamford, CT, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  33. In Memoriam Cemetery Assoc

    EIN 060400075 · Headquarters: WALLINGFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  34. Independence Northwest Inc

    EIN 061246618 · Headquarters: NAUGATUCK, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  35. Independent Connecticut Petroleum Association Inc

    EIN 237106331 · Headquarters: Cromwell, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  36. Independent Electrical Contractors of New England Inc

    EIN 237121437 · Headquarters: ROCKY HILL, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  37. Independent Insurance Agents of Connecti

    EIN 060605491 · Headquarters: W HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  38. Independent Order of Odd Fellows

    EIN 061012988 · Headquarters: WATERBURY, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  39. Independent Order of Odd Fellows

    EIN 066053394 · Headquarters: Mystic, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  40. Independent Order of Odd Fellows

    EIN 066053992 · Headquarters: Waterbury, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  41. Independent Order of Odd Fellows

    EIN 066054140 · Headquarters: Waterbury, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  42. Independent Order of Odd Fellows

    EIN 066182013 · Headquarters: Waterbury, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  43. Independent Order of Odd Fellows

    EIN 352454547 · Headquarters: Waterbury, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  44. Independent Order of Odd Fellows Ct Grand Lodge

    EIN 060622547 · Headquarters: WATERBURY, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  45. Independent Womens Traumatic Brain Injury Charity

    EIN 453658600 · Headquarters: New Canaan, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  46. Indian & Colonial Research Center Inc

    EIN 066083774 · Headquarters: Old Mystic, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  47. Indian Child Development Project Inc

    EIN 472612525 · Headquarters: riverside, CT, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  48. Indian Fields Homeowners Association

    EIN 061052900 · Headquarters: Brookfield, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  49. Indian Hill Cemetery Association

    EIN 060351715 · Headquarters: MIDDLETOWN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  50. Indian Hill Country Club Inc

    EIN 060852220 · Headquarters: NEWINGTON, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  51. Indian Meadow Estate Inc

    EIN 060728654 · Headquarters: WINSTED, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  52. Infection Control Nurses of Connecticut

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

  53. Infectious Diseases Society of New York Inc

    EIN 133734533 · Headquarters: Old Greenwich, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  54. Information Systems Audit and Control Association Inc

    EIN 363538336 · Headquarters: Simsbury, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  55. Informing Democracy

    EIN 883181615 · Headquarters: GROTON, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  56. Inspirica Inc

    EIN 061172535 · Headquarters: STAMFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  57. Institute for Healthcare Communication

    EIN 223208010 · Headquarters: Danbury, CT, USA · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990

  58. Institute for Studies Ineducational Mathematics

    EIN 411387197 · Headquarters: North Haven, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  59. Institute of Industrial Engineers Inc

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

  60. Institute of Internal Auditors

    EIN 237300273 · Headquarters: Broad Brook, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  61. Institute of Internal Auditors

    EIN 620976511 · Headquarters: Stamford, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  62. Institute of Internal Medicine Research

    EIN 208105306 · Headquarters: BLOOMFIELD, CT, US · Unknown & Unclassified · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  63. Institute of Management Accountants Inc

    EIN 237353145 · Headquarters: HARTFORD, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  64. Institute of Management Accountants Inc

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

  65. Institute of Management Accountants Inc

    EIN 237354321 · Headquarters: MOOSUP, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  66. Institute of Management Accountants Inc

    EIN 237453555 · Headquarters: STRATFORD, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  67. Institute of Management Accountants Inc

    EIN 510141207 · Headquarters: BRIDGEPORT, CT, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  68. Institute of RE Management CT Chptr # 51

    EIN 510203835 · Headquarters: Bloomfield, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  69. Institute on Religion in an Age of Science

    EIN 046063856 · Headquarters: Coventry, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  70. Instructors of Handicapped Inc

    EIN 066060183 · Headquarters: Manchester, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  71. Insulators Local #33 Scholarship Fund Inc

    EIN 931878810 · Headquarters: WALLINGFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  72. Insurance Association of Connecticu

    EIN 060728625 · Headquarters: HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  73. Insurance City Repeater Club

    EIN 061243783 · Headquarters: Bristrol, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  74. Int Assn Firefighters Local 1081

    EIN 066074544 · Headquarters: WESTPORT, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  75. Int'l Assoc of Bridge Structural Ormtl Reinforcing Ironworkers Lcl 12 Hlth Fd

    EIN 141512728 · Headquarters: WALLINGFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  76. Int'l Assoc of Lions 9043 Southington Lions Club

    EIN 066081963 · Headquarters: SOUTHINGTON, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  77. Int'l Association of Firefighters New Canaan Firefighters Benevolent

    EIN 061258034 · Headquarters: NEW CANAAN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  78. Int'l Bro of Elect Workers Local 42 Occsafetyhealth and Education Trust Fd

    EIN 061062697 · Headquarters: EAST WINDSOR, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  79. Integral Health Services Inc

    EIN 060943750 · Headquarters: Woodstock, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  80. Integrated Refugee and Immigrant Services

    EIN 060653044 · Headquarters: NEW HAVEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  81. Intelligent Transportation Society of America Its America

    EIN 061495684 · Headquarters: Glastonbury, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  82. Intempo Organization Inc

    EIN 900725572 · Headquarters: STAMFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  83. Intenational Association of Lions Clubs

    EIN 237091322 · Headquarters: Killingworth, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  84. Intensive Education Academy Inc

    EIN 061077091 · Headquarters: WEST HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  85. Inter Ed Incorporated

    EIN 060922193 · Headquarters: HIGGANUM, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  86. Inter-service Clubs Committee of New Haven Inc

    EIN 060621276 · Headquarters: ORANGE, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  87. Interact Networking Club

    EIN 061431411 · Headquarters: Norwalk, CT, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  88. Interfaith Council of Southwestern Connecticut Inc

    EIN 066011553 · Headquarters: Stamford, CT, USA · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-EZ

  89. Interfaith Service Committee of New Canaan

    EIN 066062346 · Headquarters: New Canaan, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  90. Internaitonal Association of Fire Fighters

    EIN 061539870 · Headquarters: Middletown, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  91. International 180185 Club Inc

    EIN 953442835 · Headquarters: ONECO, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  92. International Alliance of Theatrical Stage Employees Local 84

    EIN 060925943 · Headquarters: HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  93. International Anahuac Medical Alumni Association

    EIN 812610194 · Headquarters: WOODBRIDGE, CT, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  94. International Assoc of Bridge Struct Ornamental & Reinfor Ironworkers Lu 424

    EIN 060400755 · Headquarters: NORTH HAVEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  95. International Assoc of Bridge Struct Ornamental and Reinforcing Iw 15

    EIN 060400743 · Headquarters: HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  96. International Assoc of Firefighters 801 Iaff

    EIN 066068822 · Headquarters: DANBURY, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  97. International Assoc of Firefighters Local 825

    EIN 066049296 · Headquarters: NEW HAVEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  98. International Association Fire Fighters Local 1339

    EIN 066069176 · Headquarters: WATERBURY, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  99. International Association Heat & Frost Insulators Local 33

    EIN 060386905 · Headquarters: WALLINGFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  100. International Association of Electrical Inspectors

    EIN 066048864 · Headquarters: Ellington, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

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