Coles County ZIP Codes

List of ZIP Codes in Coles County

The following table lists ZIP Codes associated with Coles County, Illinois, based on ZIP Code Tabulation Area (ZCTA) data from the U.S. Census Bureau.


S.N. Zip Code Latitude Longitude City Population Density
1 61912 39.52825 -88.03357 Ashmore 1,192 8.9
2 61920 39.50415 -88.16448 Charleston 20,703 53.9
3 61931 39.59067 -88.35883 Humboldt 1,328 15.7
4 61938 39.48004 -88.37571 Mattoon 20,440 62.4
5 61943 39.6608 -88.0248 Oakland 1,495 7.7
6 62440 39.39433 -88.26325 Lerna 1,092 10.4


About Coles County ZIP Codes

Coles County in Illinois (IL) is served by approximately 6 ZIP Codes. These codes cover residential neighborhoods, business districts, and rural areas that fall under the county's jurisdiction.

Based on ZIP-level population estimates, the total population covered by these ZIP Codes is around 46,250 people. Population and density values vary from one ZIP Code to another, reflecting the mix of dense urban communities and lower-density suburban or rural zones.

Many of the most significant population centers in Coles County are located in cities such as Charleston, Mattoon, Oakland, Humboldt, Ashmore. These cities and towns help define the economic and demographic character of the county.

Most ZIP Codes in Coles County, Illinois follow the America/Chicago time zone.