Zip Area Code

Saybrook, Illinois

Saybrook, Illinois, in McLean County, has ZIP code 61770 and area code 309, with 861 as an overlay.

ZIP code
61770
Area codes
309, 861
Time zone
Central Time
Coordinates
40.4320, -88.5247

ZIP codes in Saybrook

ZIP codePost officeCountyArea codes
61770SaybrookMcLean County309, 861

Area codes for Saybrook

  • Area code 309

    In service since 1957. Shares its area with 861. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

  • Area code 861

    In service since February 24, 2023. Shares its area with 309. 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

Saybrook is in the Central Time zone.

Towns near Saybrook