Nonprofits in Old Greenwich, Connecticut

Nonprofits in Old Greenwich, Connecticut. Browse 109 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. Tikkun Olam Steinberg Foundation Inc

    EIN 270618341 · Headquarters: OLD GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  2. Toastmasters International

    EIN 900858308 · Headquarters: Old Greenwich, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  3. Vick Foundation Inc

    EIN 134199723 · Headquarters: OLD GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  4. Voice in Sport Foundation

    EIN 844003762 · Headquarters: OLD GREENWICH, CT, USA · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990

  5. Waste Free Greenwich Inc

    EIN 922949060 · Headquarters: Old Greenwich, CT, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  6. Weevster 18 Inc

    EIN 833749813 · Headquarters: OLD GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  7. Wista USA

    EIN 133952621 · Headquarters: Old Greenwich, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  8. Worldquant Foundation

    EIN 263576736 · Headquarters: OLD GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  9. Zia Charitable Foundation

    EIN 475319201 · Headquarters: OLD GREENWICH, CT, USA · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

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