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 3,274. Johnston City is currently declining at a rate of -0.52% annually and its population has decreased by -3.11% since the most recent census, which recorded a population of 3,379 in 2020.

The median household income in Johnston City is $42,465 with a poverty rate of 17.85%. The median age in Johnston City is 38.3 years: 34.7 years for males, and 39.4 years for females. For every 100 females there are 87.0 males.

3.3K
Total Population
1,547
Density (mi²)
-17 -0.52%
Growth

Johnston City Population

Johnston City Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
20263,274-17-0.52%
20253,291-18-0.54%
20243,30910.03%
20233,308-8-0.24%
20223,316-30-0.9%
20213,346-33-0.98%
20203,379-7-0.21%
20193,393-41-1.19%
20183,434-14-0.41%
20173,448-38-1.09%
20163,486-15-0.43%
20153,501-8-0.23%
20143,509-22-0.62%
20133,531-5-0.14%
20123,536-25-0.7%
20113,561-2-0.06%
20103,563200.56%
20003,557-149-4.02%
19903,706-167-4.31%
19803,873-55-1.4%
19703,928370.95%
19603,891-588-13.13%
19504,479-939-17.33%
19405,418-537-9.02%
19305,955-1,182-16.56%
19207,1373,889119.74%
19103,24800%

Median Age

Overall: 38.3 years
Female: 39.4 years
Male: 34.7 years

Johnston City Adults

There are 2,612 adults, (556 of whom are seniors) in Johnston City.

Sex Ratio

Female: 1,779 (53.5%)
Male: 1,548 (46.5%)

Demographics

The racial composition of Johnston City includes 90.35% White, and smaller percentages for Asian, other race, Black or African American and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White3,00690.35%
Two or more races1514.54%
Asian882.65%
Other race551.65%
Black or African American270.81%
Race
Population ↓
Percentage (of total)
Other race551.65%
Race
Population ↓
Percentage (of total)
White3,00690.35%
Two or more races1514.54%
Asian882.65%
Black or African American270.81%

Johnston City Marital Status

Economics and Income Statistics

Johnston City 's average per capita income is $52,140. Household income levels show a median of $42,465. The poverty rate stands at 17.85%.

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$118,676-
Families$91,674$93,608
Households$42,465$71,283
Non Families$30,233$37,548

$52,140

Average Income

$42,465

Median Household Income

17.85%

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)