Zip Area Code

Central Islip, New York

Central Islip, New York, in Suffolk County, has ZIP code 11722 and area code 631, with 934 as an overlay.

ZIP code
11722
Area codes
631, 934
Time zone
Eastern Time
Coordinates
40.7866, -73.1961

ZIP codes in Central Islip

ZIP codePost officeCountyArea codes
11722Central IslipSuffolk County631, 934

Area codes for Central Islip

  • Area code 631

    In service since November 1, 1999. Shares its area with 934. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

  • Area code 934

    In service since July 16, 2016. Shares its area with 631. 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

Central Islip is in the Eastern Time zone.

Towns near Central Islip