Effingham County, Illinois Zip Codes by Population (2024)

The most populated Zip Code in Effingham County, Illinois is 62401, located in Effingham. * 2024 populations estimated based on the latest ACS 5-year data.

Zip Code
City
Population
62401Effingham19,240
62411Altamont4,070
62467Teutopolis3,929
62424Dieterich2,475
62443Mason1,849
62473Watson1,143
62461Shumway652