There are 7 zip codes in Effingham County, Illinois. The most populated is 62401, located in Effingham. * 2024 populations estimated based on the latest ACS 5-year data.

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

Effingham County, Illinois Zip Codes by Population (2024)