There are 11 zip codes in Clinton County, Illinois. The most populated is 62231, located in Carlyle. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
622316,680Carlyle
622306,352Breese
622654,418New Baden
622934,392Trenton
622162,980Aviston
622152,074Albers
622182,009Bartelso
622451,698Germantown
622191,046Beckemeyer
62250652Hoffman
6226613New Memphis

Zip Codes in Clinton County, Illinois by Population (2024)