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Mason County, Illinois Zip Codes
Zip Code
City
Population
62644
Havana
4,690
62664
Mason City
2,945
62682
San Jose
751
62655
Kilbourne
719
62633
Easton
603
61567
Topeka
500
62617
Bath
478
61532
Forest City
410
Population is the most recent figure from the U.S. Census Bureau's 2022
American Community Survey (ACS) 5-Year Estimates
.