Johnston City Flag

Johnston City

County Seat:
No
Area (mi²):
2.116
State:
Illinois

Johnston City is a city located in Williamson County, Illinois. Johnston City has a 2026 population of 3,309. Johnston City is currently growing at a rate of 0.03% annually but its population has decreased by -2.07% since the most recent census, which recorded a population of 3,379 in 2020.

3.3K
Total Population
1,564
Density (mi²)
1 0.03%
Growth

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)