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
625131,485Blue Mound
625731,319Warrensburg
62551924Niantic
62523800Decatur
62514380Boody
62537329Harristown
6253264Elwin
showing: 16 rows

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