Zip Area Code

Islip, New York

Islip, New York, in Suffolk County, has ZIP code 11751 and area code 631, with 934 as an overlay.

ZIP code
11751
Area codes
631, 934
Time zone
Eastern Time
Coordinates
40.7348, -73.2221

ZIP codes in Islip

ZIP codePost officeCountyArea codes
11751IslipSuffolk County631, 934

Area codes for 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

Islip is in the Eastern Time zone.

Towns near Islip