Find the last 4 digits (ZIP+4) for an address in 11556

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ZIP Code 11556 – Uniondale, NY

Uniondale, New York · Nassau County · Eastern time

ZIP code11556
CityUniondale
StateNew York
CountyNassau County
Population0
Time zoneEastern · local time
ZIP typeStandard (has a Census ZCTA area)
Land area0.07 sq mi
Center (lat, long)40.7199, -73.5834

Area codes in this area

516363

These are the area codes that most often serve ZIP 11556 (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.

Map

Nearby ZIP codes

11549 Hempstead · 0.9 mi11553 Uniondale · 1.1 mi11554 East Meadow · 1.3 mi11555 Uniondale · 1.4 mi11551 Hempstead · 2.1 mi11550 Hempstead · 2.3 mi11590 Westbury · 2.5 mi11514 Carle Place · 2.6 mi

About ZIP 11556

ZIP code 11556 is assigned to Uniondale, New York. It lies in Nassau County. Its Census area covers about 0.07 square miles of land. The closest neighboring ZIP is 11549 (Hempstead), about 0.9 miles away.

Every address in 11556 also has a 4-digit add-on code (ZIP+4) that points to a smaller delivery area. Use the box above to find it.

Sources: US Census Bureau (ZCTA, county relationship files), GeoNames (CC BY 4.0), NANPA via NumberResearch.org (CC BY 4.0). Map © OpenStreetMap contributors. ZIP areas are approximate. Population: U.S. Census Bureau, ACS 5-year estimates, 2024 (ZCTA). Data sources