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 2025 population of 3,291 . Johnston City is currently declining at a rate of -0.54% annually and its population has decreased by -2.6% since the most recent census, which recorded a population of 3,379 in 2020.

The average household income in Johnston City is $70,474 with a poverty rate of 14.8%. The median age in Johnston City is 44.1 years: 34.5 years for males, and 52.1 years for females. For every 100 females there are 100.2 males.

3.3K
Total Population
1,555
Density (mi²)
-18 -0.54%
Growth

Johnston City Population

Johnston City Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Johnston City includes 91.61% White, 3.55% Asian, and smaller percentages for other race and multiracial populations.

Population by Race

White (91.61%)

Asian (3.55%)

Two or more races (3.13%)

Other race (1.7%)

Race
Population
Percentage (of total)
White3,07091.61%
Asian1193.55%
Two or more races1053.13%
Other race571.7%

Johnston City Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Johnston City's average per capita income is $51,838. Household income levels show a median of $46,629. The poverty rate stands at 14.8%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median
Mean
Married Families$105,679-
Families$93,295$91,968
Households$46,629$70,474
Non Families$28,288$38,057

$51,838

Average Income

$46,629

Median Household Income

14.8%

Poverty Rate

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)