Zip Area Code

Nassau, New York

Nassau, New York, in Rensselaer County, has ZIP code 12123 and area code 518, with 838 as an overlay.

ZIP code
12123
Area codes
518, 838
Time zone
Eastern Time
Coordinates
42.5271, -73.6118

ZIP codes in Nassau

ZIP codePost officeCountyArea codes
12123NassauRensselaer County518, 838

Area codes for Nassau

  • Area code 518

    In service since 1947. Shares its area with 838. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

  • Area code 838

    In service since September 19, 2017. Shares its area with 518. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

Area codes here are matched from telephone rate centers, so a place near a boundary can have local numbers from either side of it.

Time zone

Nassau is in the Eastern Time zone.

Towns near Nassau