Zip Area Code

LaSalle, Illinois

No ZIP code carries the name of LaSalle, Illinois, in LaSalle County; the nearest ZIP codes are 61301, 61320 and 61354, in area code 815, with 779 as an overlay.

Nearest ZIP
61301, 61320, 61354
Area codes
815, 779
Time zone
Central Time
Coordinates
41.3352, -89.0972

Nearest ZIP codes to LaSalle

These are the ZIP codes nearest to LaSalle, each listed with the post office it is named after.

ZIP codePost officeCountyArea codes
61301La SalleLaSalle County815, 779
61320DalzellBureau County815, 779
61354PeruLaSalle County815, 779

Area codes for LaSalle

  • Area code 815

    In service since 1947. Shares its area with 779. Local calls are dialed with 1 plus ten digits.

  • Area code 779

    In service since March 17, 2007. Shares its area with 815. Local calls are dialed with 1 plus ten digits.

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

LaSalle is in the Central Time zone.

Towns near LaSalle