ZIP code · Uniondale · New York · United States
ZIP code 11556 — Uniondale
ZIP code 11556 serves Uniondale, New York.
- Postal code
- 11556Single source Value from one source, not cross-checked.
- City
- Uniondale
- County
- Nassau
- State
- New York
- Country
- United States
- Coordinates
- 40.7548, -73.6018 — precision precise (locality)
View on OpenStreetMap - Population
- 0 (ZCTA, ACS 5-year)
- Time zone
- America/New_York (UTC−5 / UTC−4 DST)
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS). Data generated on 2026-08-21. Methodology · Report an error on this page