Nonprofits in Mastic, New York

Nonprofits in Mastic, New York. Browse 42 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. Caitlyns Vision Inc

    EIN 843739586 · Headquarters: Mastic, NY, US · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  2. Civil Service Employees Association

    EIN 371747995 · Headquarters: Mastic, NY, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  3. Civil Service Employees Association

    EIN 862388220 · Headquarters: Mastic, NY, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  4. Dyversity Konnection Stomp Squad Inc

    EIN 813617557 · Headquarters: Mastic, NY, US · Youth Development · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  5. East End Memorial Soccer Tourninc

    EIN 900453927 · Headquarters: MASTIC, NY, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  6. El Igualito Unity Corp

    EIN 883472099 · Headquarters: Mastic, NY, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  7. Esm High School Ice Hockey Inc

    EIN 993262606 · Headquarters: MASTIC, NY, USA · Youth Development · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  8. Honor Our Indigenous Ancestors Inc

    EIN 862916227 · Headquarters: MASTIC, NY, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  9. Indigo Ministries Inc

    EIN 813005953 · Headquarters: MASTIC, NY, US · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  10. James V Kavanaugh Columbian Club Inc

    EIN 852512430 · Headquarters: Mastic, NY, USA · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  11. Kb Racing Ltd

    EIN 510531874 · Headquarters: Mastic, NY, US · Recreation & Sports · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  12. Kiwanis International Inc

    EIN 112160098 · Headquarters: Mastic, NY, US · Community Improvement & Capacity Building · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  13. Knights of Columbus

    EIN 237111490 · Headquarters: MASTIC, NY, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  14. Legworks Dance Competition Inc

    EIN 270259038 · Headquarters: Mastic, NY, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  15. Long Island Bassmasters Inc

    EIN 112772915 · Headquarters: MASTIC, NY, USA · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-PF

  16. Long Island Inmigrant Student Advocates Inc

    EIN 812911825 · Headquarters: MASTIC, NY, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  17. Long Island Native American Task Force Inc

    EIN 113528727 · Headquarters: Mastic, NY, US · Arts, Culture & Humanities · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  18. Loving Education at Home

    EIN 113634146 · Headquarters: Mastic, NY, US · Education · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  19. Lynettes Dream Inc

    EIN 204801655 · Headquarters: MASTIC, NY, US · Human Services · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  20. Mastic Ambulance Benevolent Association Inc

    EIN 203308192 · Headquarters: Mastic, NY, US · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  21. Mastic Chemical Company No 1 Inc

    EIN 112575341 · Headquarters: MASTIC, NY, USA · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2025 · Primary form: IRS Form 990

  22. Mastic Peninsula Historical Society

    EIN 223900711 · Headquarters: MASTIC, NY, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  23. Mastic Sports Club Inc

    EIN 112478942 · Headquarters: MASTIC, NY, USA · Recreation & Sports · Latest available filing year: 2023 · Primary form: IRS Form 990

  24. Mastic Volunteer Ambulance Company

    EIN 113474702 · Headquarters: MASTIC, NY, USA · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990

  25. Native American Business Alliance- Long Island Inc

    EIN 204695002 · Headquarters: MASTIC, NY, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  26. Never Alone Never Afraid Inc

    EIN 113493520 · Headquarters: MASTIC, NY, USA · Housing & Shelter · Latest available filing year: 2021 · Primary form: IRS Form 990

  27. Paumanok Adgonquain Foundation Inc Poosepatuck Indian Reservation

    EIN 112444561 · Headquarters: mastic, NY, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  28. Poospatuck Cultural Foundation Inc C/o Harry B Wallace Esquire

    EIN 384039465 · Headquarters: MASTIC, NY, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  29. Sanity Inc

    EIN 464182360 · Headquarters: MASTIC, NY, USA · Public & Societal Benefit · Latest available filing year: 2014 · Primary form: IRS Form 990-EZ

  30. Save the Forge River Inc

    EIN 721609787 · Headquarters: MASTIC, NY, USA · Environment · Latest available filing year: 2013 · Primary form: IRS Form 990-EZ

  31. Shaheem Bluedabarber363 Foundation Inc

    EIN 332003985 · Headquarters: Mastic, NY, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  32. Team Rise Together Inc

    EIN 883545876 · Headquarters: Mastic, NY, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  33. The Fabulous 50S and 60S Nostalgia Car Club Inc

    EIN 113562256 · Headquarters: Mastic, NY, USA · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  34. The Friends of the William Floyd Estate Inc

    EIN 113239325 · Headquarters: Mastic, NY, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  35. United Local and Global Ministries Inc

    EIN 934083833 · Headquarters: Mastic, NY, US · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  36. Unkechaug Nation Community Development

    EIN 800701013 · Headquarters: Mastic, NY, US · Community Improvement & Capacity Building · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  37. Vigilant Truck Engine Company 3 Inc

    EIN 811590186 · Headquarters: Mastic, NY, US · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  38. William Floyd Aau-yboa Basketball

    EIN 205890991 · Headquarters: Mastic, NY, US · Recreation & Sports · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  39. William Floyd Community Summit

    EIN 161620383 · Headquarters: Mastic, NY, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  40. William Floyd Soccer Academy Inc

    EIN 393608010 · Headquarters: Mastic, NY, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  41. William Floyd Wrestling Booster Inc

    EIN 393656977 · Headquarters: Mastic, NY, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  42. William Floyd Youth Lacrosse Inc

    EIN 393682678 · Headquarters: Mastic, NY, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N