There are 16 zip codes in Macon County, Illinois. The most populated is 62521, located in Decatur. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
6252133,453Decatur
6252630,572Decatur
6252215,010Decatur
625496,684Mt Zion
625353,856Forsyth
617562,564Maroa
625012,242Argenta
625541,727Oreana
625441,600Macon
625731,319Warrensburg
619251,054Dalton City
62551924Niantic
62523800Decatur
62514380Boody
62537329Harristown
6253264Elwin

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