There are 8 zip codes in Marshall County, Illinois. The most populated is 61540, located in Lacon. * 2024 populations estimated based on the latest ACS 5-year data.

CSV JSON
Zip Code
Population
City
615402,771Lacon
615372,727Henry
615651,433Sparland
613691,393Toluca
613751,163Varna
6154199La Rose
6142434Camp Grove
6147924Speer

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