Find the last 4 digits (ZIP+4) for an address in 12123

ZIP 12123, Nassau, NY is filled in. Just type the street address.

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ZIP Code 12123 – Nassau, NY

Nassau, New York · Rensselaer County · Eastern time

ZIP code12123
CityNassau
StateNew York
CountyRensselaer CountyColumbia County
Population4,457
Time zoneEastern · local time
ZIP typeStandard (has a Census ZCTA area)
Land area31.77 sq mi
Center (lat, long)42.5221, -73.6064

Area codes in this area

518838

These are the area codes that most often serve ZIP 12123 (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

12063 East Schodack · 3.5 mi12115 Malden Bridge · 3.8 mi12132 North Chatham · 3.8 mi12024 Brainard · 4.6 mi12033 Castleton On Hudson · 4.8 mi12062 East Nassau · 5.3 mi12061 East Greenbush · 5.9 mi12130 Niverville · 6.1 mi

About ZIP 12123

ZIP code 12123 is assigned to Nassau, New York. It crosses 2 counties; most of its land is in Rensselaer County. Its Census area covers about 31.77 square miles of land. The closest neighboring ZIP is 12063 (East Schodack), about 3.5 miles away.

Every address in 12123 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