Nonprofits in Mamaroneck, New York

Nonprofits in Mamaroneck, New York. Browse 177 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. 2247 Mamaroneck Aux

    EIN 510220601 · Headquarters: Mamaroneck, NY, US · Mutual & Membership Benefit · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  2. Albert P Victor Foundation Inc

    EIN 133136444 · Headquarters: MAMARONECK, NY, USA · Education · Latest available filing year: 2021 · Primary form: IRS Form 990-EZ

  3. Alliance of Green Schools and Communities Inc

    EIN 203408077 · Headquarters: Mamaroneck, NY, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  4. American Federation of Musicians of the Us & Canada

    EIN 131739692 · Headquarters: Mamaroneck, NY, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  5. American Federation of Teachers

    EIN 237360769 · Headquarters: Mamaroneck, NY, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  6. American Legion Post 90

    EIN 136126722 · Headquarters: MAMARONECK, NY, USA · Public & Societal Benefit · Latest available filing year: 2016 · Primary form: IRS Form 990

  7. American National Deployment of Resources For

    EIN 832215357 · Headquarters: Mamaroneck, NY, USA · Arts, Culture & Humanities · Latest available filing year: 2021 · Primary form: IRS Form 990

  8. Animal Welfare Advocacy Inc

    EIN 300120140 · Headquarters: MAMARONECK, NY, US · Animal Related · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  9. Animal Welfare Trust Inc

    EIN 134131408 · Headquarters: MAMARONECK, NY, USA · Animal Related · Latest available filing year: 2021 · Primary form: IRS Form 990-PF

  10. Anzafrika Inc

    EIN 825146327 · Headquarters: MAMARONECK, NY, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  11. Arat Laro Foundation

    EIN 921567942 · Headquarters: Mamaroneck, NY, US · Youth Development · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  12. Artistree Community Theater Inc

    EIN 921171358 · Headquarters: Mamaroneck, NY, USA · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  13. Association Multicultural in French Corp

    EIN 994841603 · Headquarters: Mamaroneck, NY, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  14. At Home on the Sound Inc

    EIN 263324435 · Headquarters: MAMARONECK, NY, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  15. At Liberty Ministries Inc

    EIN 811405037 · Headquarters: MAMARONECK, NY, US · Civil Rights, Social Action & Advocacy · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  16. Autism Dreams Inc

    EIN 881446916 · Headquarters: Mamaroneck, NY, US · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  17. Beach Point Club Inc

    EIN 131697222 · Headquarters: MAMARONECK, NY, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  18. Beacon of Hope Inc

    EIN 260564754 · Headquarters: MAMARONECK, NY, US · Education · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  19. Better Estrogen Health Foundation

    EIN 843831909 · Headquarters: Mamaroneck, NY, US · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  20. Bradley L Goldberg Family Foundation

    EIN 136847767 · Headquarters: MAMARONECK, NY, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  21. Center for Continuing Education Inc

    EIN 132763919 · Headquarters: Mamaroneck, NY, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  22. Centro Familiar Cristiano Inc

    EIN 990888466 · Headquarters: MAMARONECK, NY, USA · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  23. Children of the Ganges

    EIN 461465652 · Headquarters: Mamaroneck, NY, US · International, Foreign Affairs & National Security · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  24. Civil Service Employees Association

    EIN 133170123 · Headquarters: Mamaroneck, NY, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  25. Civil Service Employees Association Town of Mamoroneck 8222-000860

    EIN 900432089 · Headquarters: Mamaroneck, NY, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  26. Columbia Engine & Hose Co 2 Corp

    EIN 934227266 · Headquarters: MAMARONECK, NY, USA · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  27. Community Resource Center

    EIN 311678682 · Headquarters: Mamaroneck, NY, US · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  28. David Goldstein Foundation Inc

    EIN 136091593 · Headquarters: MAMARONECK, NY, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  29. Eastcoast Classic Car Association

    EIN 204818320 · Headquarters: MAMARONECK, NY, USA · Human Services · Latest available filing year: 2016 · Primary form: IRS Form 990-EZ

  30. Eleanor & Milton Rones Foundation

    EIN 134132259 · Headquarters: MAMARONECK, NY, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2012 · Primary form: IRS Form 990-PF

  31. Emmanuel International Ministries Inc

    EIN 134193465 · Headquarters: MAMARONECK, NY, USA · Religion Related · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  32. Empowering Entrepreneurs Inc

    EIN 821445911 · Headquarters: Mamaroneck, NY, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  33. En Classe USA Inc

    EIN 455215243 · Headquarters: Mamaroneck, NY, US · International, Foreign Affairs & National Security · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  34. Eugenie S Wright Foundation Inc C/o Meighan Firm

    EIN 136130913 · Headquarters: MAMARONECK, NY, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  35. Fair Game Foundation Corp

    EIN 475099493 · Headquarters: Mamaroneck, NY, US · Education · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  36. Family Office Principals Group Inc C/o Danielle Seltzer

    EIN 811440629 · Headquarters: MAMARONECK, NY, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990

  37. Foulke Foundation Trust C/o John Foulke

    EIN 137033827 · Headquarters: MAMARONECK, NY, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  38. Fraternite Fund

    EIN 460560506 · Headquarters: MAMARONECK, NY, US · Youth Development · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  39. Friends of Human Development Services of Westchester Inc

    EIN 133075081 · Headquarters: MAMARONECK, NY, USA · Mental Health & Crisis Intervention · Latest available filing year: 2024 · Primary form: IRS Form 990

  40. Friends of Keeseville Inc

    EIN 920789320 · Headquarters: MAMARONECK, NY, US · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  41. Friends of the Counseling Center

    EIN 132886921 · Headquarters: MAMARONECK, NY, USA · Mental Health & Crisis Intervention · Latest available filing year: 2024 · Primary form: IRS Form 990

  42. Friends of the Mamaroneck Library

    EIN 133758679 · Headquarters: Mamaroneck, NY, US · Human Services · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  43. Friends of the This Land Is Mine Russian & Ethiopian Olim Fund Inc

    EIN 133731528 · Headquarters: MAMARONECK, NY, US · Human Services · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  44. Friends of the Weinberg Nature Center Inc

    EIN 133566673 · Headquarters: Mamaroneck, NY, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  45. Friends of Tsad Kadima

    EIN 363918097 · Headquarters: MAMARONECK, NY, USA · International, Foreign Affairs & National Security · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  46. Goat2school Inc

    EIN 352416932 · Headquarters: MAMARONECK, NY, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  47. Goldas Light Foundation Inc

    EIN 991257580 · Headquarters: Mamaroneck, NY, US · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  48. Hampshire Club Inc

    EIN 463972616 · Headquarters: MAMARONECK, NY, USA · Mutual & Membership Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990

  49. Harbor Island Conservancy Inc

    EIN 300154652 · Headquarters: MAMARONECK, NY, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  50. Hispanic Women Leaders of Westchester

    EIN 320002524 · Headquarters: Mamaroneck, NY, US · Community Improvement & Capacity Building · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  51. Hommocks Cares Inc

    EIN 010935949 · Headquarters: Mamaroneck, NY, US · Human Services · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  52. Hormonal Cancer Foundation

    EIN 272223235 · Headquarters: Mamaroneck, NY, US · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  53. Hosh Kids Inc

    EIN 463921533 · Headquarters: MAMARONECK, NY, USA · Human Services · Latest available filing year: 2022 · Primary form: IRS Form 990

  54. Hosh Yoga Inc

    EIN 264791960 · Headquarters: MAMARONECK, NY, USA · Human Services · Latest available filing year: 2021 · Primary form: IRS Form 990

  55. Human Development Services Westchester Inc

    EIN 133008872 · Headquarters: MAMARONECK, NY, USA · Mental Health & Crisis Intervention · Latest available filing year: 2024 · Primary form: IRS Form 990

  56. Humane Education Advocates Reaching Teachers

    EIN 412055310 · Headquarters: MAMARONECK, NY, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  57. Hz Family Foundation

    EIN 332523916 · Headquarters: MAMARONECK, NY, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  58. Iglesia De Cristo Palabra De Vida

    EIN 465093409 · Headquarters: MAMARONECK, NY, US · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  59. Iglesia Pentecostal Koinonia Inc

    EIN 134063789 · Headquarters: MAMARONECK, NY, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  60. Inner-city Student Golf-USA Ltd

    EIN 134080912 · Headquarters: Mamaroneck, NY, US · Recreation & Sports · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  61. Intercity Insurance Fund

    EIN 237085678 · Headquarters: MAMARONECK, NY, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  62. International Association of Lions Clubs

    EIN 116036350 · Headquarters: Mamaroneck, NY, US · Community Improvement & Capacity Building · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  63. Karrey Childrens Center Inc

    EIN 133004729 · Headquarters: Mamaroneck, NY, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  64. Keeps Inc

    EIN 133182620 · Headquarters: Mamaroneck, NY, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  65. Keeseville Community Development Corporation

    EIN 823536686 · Headquarters: MAMARONECK, NY, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  66. Key Club International

    EIN 136201176 · Headquarters: Mamaroneck, NY, US · Youth Development · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  67. Knights of Columbus

    EIN 136379794 · Headquarters: MAMARONECK, NY, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  68. Knights of Columbus

    EIN 237112964 · Headquarters: Mamaroneck, NY, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  69. Kool Nerd Prep Inc

    EIN 822518515 · Headquarters: MAMARONECK, NY, USA · Education · Latest available filing year: 2025 · Primary form: IRS Form 990

  70. Kyoichi A Watanabe Family Found Inc

    EIN 463855673 · Headquarters: Mamaroneck, NY, USA · Medical Research · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  71. Larchmont Mamaroneck Fc Inc

    EIN 134159691 · Headquarters: MAMARONECK, NY, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990

  72. Larchmont Mamaroneck Lions Foundation Inc

    EIN 464259540 · Headquarters: Mamaroneck, NY, US · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  73. Larchmont-mamaroneck Community Television Inc

    EIN 133202759 · Headquarters: MAMARONECK, NY, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  74. Larchmont-mamaroneck Local Summit Inc

    EIN 134346645 · Headquarters: Mamaroneck, NY, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  75. Lewis Pugh Foundation Inc

    EIN 923303671 · Headquarters: Mamaroneck, NY, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  76. Mamaroneck Beach & Yacht Club & Spa

    EIN 833221266 · Headquarters: MAMARONECK, NY, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  77. Mamaroneck Chamber of Commerce Inc

    EIN 131764746 · Headquarters: MAMARONECK, NY, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990

  78. Mamaroneck Community Chorus Inc

    EIN 933794859 · Headquarters: Mamaroneck, NY, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  79. Mamaroneck Community Nursery School

    EIN 132865547 · Headquarters: MAMARONECK, NY, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  80. Mamaroneck Emergency Medical Service Inc

    EIN 300493594 · Headquarters: Mamaroneck, NY, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  81. Mamaroneck Federation of School Secretaries Nysut Aft 4166 Afl-cio

    EIN 133265288 · Headquarters: Mamaroneck, NY, US · Employment · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  82. Mamaroneck Group

    EIN 371856550 · Headquarters: Mamaroneck, NY, US · Mental Health & Crisis Intervention · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  83. Mamaroneck Historical Society

    EIN 133045309 · Headquarters: MAMARONECK, NY, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  84. Mamaroneck Lodge 1457 Benevolent & Pro Tective Order of Elks USA Inc

    EIN 133599647 · Headquarters: MAMARONECK, NY, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  85. Mamaroneck Shares Inc

    EIN 272660801 · Headquarters: Mamaroneck, NY, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  86. Mamaroneck Student Capital Inc

    EIN 392428290 · Headquarters: Mamaroneck, NY, US · Youth Development · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  87. Mamaroneck Teachers Assoc

    EIN 132689185 · Headquarters: MAMARONECK, NY, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  88. Mamaroneck Village Republican Committee

    EIN 133204358 · Headquarters: MAMARONECK, NY, US · Unknown & Unclassified · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  89. Mamaroneck Youth Football League Inc

    EIN 274032497 · Headquarters: MAMARONECK, NY, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990

  90. Most Holy Trinity Society of Mamaroneck Inc

    EIN 882531797 · Headquarters: Mamaroneck, NY, US · Religion Related · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  91. Music Studio of Westchester Inc

    EIN 133862522 · Headquarters: MAMARONECK, NY, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  92. New York Association of Mortgage Brokers

    EIN 112897636 · Headquarters: MAMARONECK, NY, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  93. New York Champs Flying Club Inc

    EIN 475160797 · Headquarters: Mamaroneck, NY, US · Recreation & Sports · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  94. New York Coalition for Healthy School Lunches Inc

    EIN 432054405 · Headquarters: MAMARONECK, NY, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  95. New York Committee - Nmwa Inc

    EIN 842288726 · Headquarters: MAMARONECK, NY, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  96. New York Shinbu-kan Kendo Dojo Inc

    EIN 113518548 · Headquarters: Mamaroneck, NY, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  97. New York State Digital Equity Netwo Rk Inc

    EIN 394673554 · Headquarters: Mamaroneck, NY, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  98. Off Center Dance Theatre Inc

    EIN 133603084 · Headquarters: MAMARONECK, NY, USA · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  99. Orenova Foundation Inc

    EIN 912167862 · Headquarters: MAMARONECK, NY, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  100. Orienta Beach Club Inc

    EIN 131723696 · Headquarters: MAMARONECK, NY, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

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