There are 6 zip codes in Richland County, Illinois. The most populated is 62450, located in Olney. * 2024 populations estimated based on the latest ACS 5-year data.

CSV JSON
Zip Code
Population
City
6245012,327Olney
628681,706Noble
62425843Dundas
62421406Claremont
62452325Parkersburg
62419258Calhoun

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