Zip Area Code

St. Clair County, Illinois

St. Clair County, Illinois, has 36 towns and 30 ZIP codes, in area code 618, with 730 as an overlay.

Towns in St. Clair County, A to Z

TownZIP codesArea codes
Belleville62220, 62221, 62222, 62223, 62226618, 730
Brooklynnearest62059, 62090, 62201618, 730
Cahokia Heightsnearest62205, 62206, 62207618, 730
Caseyville62232618, 730
Darmstadtnearest62255, 62257, 62282618, 730
Dupo62239618, 730
East Carondelet62240618, 730
East Saint Louis62201, 62202, 62203, 62204, 62205, 62206 and more618, 730
East St. Louisnearest62201, 62204, 62205618, 730
Fairview Heights62208618, 730
Fayettevillenearest62255, 62282618, 730
Floravillenearest62285618, 730
Freeburg62243618, 730
Lebanon62254618, 730
Lenzburg62255618, 730
Lovejoy62059618, 730
Marissa62257618, 730
Mascoutah62258618, 730
Millstadt62260618, 730
National Stock Yards62071618, 730
New Athens62264618, 730
O Fallon62269618, 730
O'Fallonnearest62208, 62269618, 730
Paderbornnearest62248, 62285618, 730
Rentchlernearest62221, 62225618, 730
Saint Libory62282618, 730
Saugetnearest62205, 62206, 62207618, 730
Scott AFBnearest62221, 62225, 62254618, 730
Scott Air Force Base62225618, 730
Shilohnearest62221, 62225, 62269618, 730
Smithton62285618, 730
St. Liborynearest62255, 62282618, 730
Summerfield62289618, 730
Swanseanearest62208, 62223, 62226618, 730
Venedynearest62214, 62282618, 730
Washington Parknearest62203, 62204, 62205618, 730

ZIP codes in St. Clair County

Area codes in St. Clair County

  • Area code 618

    In service since 1947. Shares its area with 730. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

  • Area code 730

    In service since July 7, 2023. Shares its area with 618. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

Local numbers in area code 618

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