St. John Flag

St. John

County Seat:
No
Area (mi²):
1.424
State:
Missouri

St. John is a city located in St. Louis County, Missouri. St. John has a 2026 population of 6,394. St. John is currently declining at a rate of -0.61% annually and its population has decreased by -3.53% since the most recent census, which recorded a population of 6,628 in 2020.

The median household income in St. John is $53,755 with a poverty rate of 15.39%. The median age in St. John is 36 years: 35.7 years for males, and 36.3 years for females. For every 100 females there are 94.1 males.

6.4K
Total Population
4,490
Density (mi²)
-39 -0.61%
Growth

St. John Population

St. John Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
20266,394-39-0.61%
20256,433-39-0.6%
20246,472-7-0.11%
20236,479-37-0.57%
20226,516-66-1%
20216,582-59-0.89%
20206,6282804.41%
20196,348-15-0.24%
20186,363-22-0.34%
20176,385-36-0.56%
20166,421-54-0.83%
20156,475-14-0.22%
20146,489-14-0.22%
20136,503-15-0.23%
20126,518-8-0.12%
20116,52610.02%
20106,52580.12%
20006,871-595-7.97%
19907,466-388-4.94%
19807,854-1,106-12.34%
19708,9601,61822.04%
19607,34200%

Median Age

Overall: 36 years
Female: 36.3 years
Male: 35.7 years

St. John Adults

There are 5,083 adults, (1,047 of whom are seniors) in St. John.

Sex Ratio

Female: 3,362 (51.5%)
Male: 3,165 (48.5%)

Demographics

The racial composition of St. John includes 48.66% White, 36.25% Black or African American, 11.15% other race, and smaller percentages for Asian and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White3,17648.66%
Black or African American2,36636.25%
Other race72811.15%
Two or more races2333.57%
Asian240.37%
Race
Population ↓
Percentage (of total)
Other race71510.95%
White390.6%
Two or more races380.58%
Race
Population ↓
Percentage (of total)
White3,13748.06%
Black or African American2,36636.25%
Two or more races1952.99%
Asian240.37%
Other race130.2%

St. John Marital Status

Economics and Income Statistics

St. John 's average per capita income is $39,979. Household income levels show a median of $53,755. The poverty rate stands at 15.39%.

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$58,054-
Families$54,704$75,208
Households$53,755$66,782
Non Families$45,491$47,310

$39,979

Average Income

$53,755

Median Household Income

15.39%

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)