Johnston City, Illinois

Johnston City
Johnston City
Location of Johnston City in Williamson County, Illinois.
Coordinates: 37°49′17″N 88°55′44″W / 37.82139°N 88.92889°W / 37.82139; -88.92889
CountryUnited States
StateIllinois
CountyWilliamson
Area
 • Total
2.17 sq mi (5.63 km2)
 • Land2.12 sq mi (5.48 km2)
 • Water0.058 sq mi (0.15 km2)
Elevation
440 ft (130 m)
Population
 (2020)
 • Total
3,384
 • Density1,599.2/sq mi (617.47/km2)
Time zoneUTC-6 (CST)
 • Summer (DST)UTC-5 (CDT)
ZIP Code
62951
Area code618
FIPS code17-38544
GNIS feature ID2395475

Johnston City is a city in Williamson County, Illinois, United States. The population was 3,348 at the 2020 census. This was a center of coal mining in the early 20th century, having a peak of population in the 1920s. The mining jobs attracted many immigrants from Europe.