Coles County Post Offices

103 W Ashmore St
Ashmore, Illinois 61912

667 Windsor Rd
Charleston, Illinois 61920

407 Elm St
Humboldt, Illinois 61931

307 W Main St
Lerna, Illinois 62440

513 Main St
Lerna, Illinois 62440

120 N 15th St
Mattoon, Illinois 61938

4 Pike St
Oakland, Illinois 61943

Coles County

There are 7 US Post Offices in Coles County serving a total of 54,871 residents equating to 7,839 residents per post office. It's estimated that approximately 87,580 packages are handled across the 7 county post offices annually. Coles County is a county located in the U.S. state of Illinois. As of the 2010 census, the population was 53,873. Its county seat is Charleston, which is also the home of Eastern Illinois University. Coles County is part of the Charleston-Mattoon, IL Micropolitan Statistical Area."