Zip Area Code

LaSalle County, Illinois

LaSalle County, Illinois, has 32 towns and 26 ZIP codes, in area code 815, with 779 as an overlay.

Towns in LaSalle County, A to Z

TownZIP codesArea codes
Cedar Point61316815, 779
Dana61321815, 779
Daytonnearest60557, 61350815, 779
Earlville60518815, 779
Grand Ridge61325815, 779
Hardingnearest60549815, 779
Kangleynearest61364815, 779
La Salle61301815, 779
LaSallenearest61301, 61320, 61354815, 779
Leland60531815, 779
Leonore61332815, 779
Lostant61334815, 779
Marseilles61341815, 779
Mendota61342815, 779
Millington60537815, 779
Naplatenearest61350815, 779
North Uticanearest61301, 61348, 61373815, 779
Oglesby61348815, 779
Ottawa61350815, 779
Peru61354815, 779
Ransom60470815, 779
Rutland61358815, 779
Seneca61360815, 779
Serena60549815, 779
Sheridan60551815, 779
Streator61364815, 779
Tonica61370815, 779
Triumph61371815, 779
Troy Grove61372815, 779
Utica61373815, 779
Wedron60557815, 779
Wenona61377815, 779

ZIP codes in LaSalle County

Area codes in LaSalle County

  • 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.