There are 8 zip codes in Mason County, Illinois. The most populated is 62644, located in Havana. * 2024 populations estimated based on the latest ACS 5-year data.

CSV JSON
Zip Code
Population
City
626444,690Havana
626642,945Mason City
62682751San Jose
62655719Kilbourne
62633603Easton
61567500Topeka
62617478Bath
61532410Forest City

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