Official Zip Code NameJohnston City
Zip Code StateIllinois
Primary County: Williamson
Area Code618
Current Population:37081
Racial Majority:White 62.49%
Median Household Income$55618
Average Adjusted Gross Income$89060
Time Zone:6
Elevation Range470 ft.
Area27.665 Sqm.
Coordinates(Y,X)37.827254, -88.924821