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 2025 population of 6,347. St. John is currently declining at a rate of -0.87% annually and its population has decreased by -4.25% since the most recent census, which recorded a population of 6,629 in 2020.

The average household income in St. John is $63,376 with a poverty rate of 13.97%.The median age in St. John is 38.7 years: 38.6 years for males, and 38.9 years for females.

6.3K
Total Population
4,457
Density (mi²)
-56 -0.87%
Growth

St. John Population

St. John Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of St. John includes 41.37% White, 37.7% Black or African American, 13.85% other race, and smaller percentages for Asian and multiracial populations.

Population by Race

Race
Population
Percentage (of total)
White2,71541.37%
Black or African American2,47437.7%
Other race90913.85%
Two or more races3194.86%
Asian1452.21%

St. John Marital Status

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

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

St. John's average per capita income is $39,554. Household income levels show a median of $50,429. The poverty rate stands at 13.97%.

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$52,410-
Families$51,943$71,760
Households$50,429$63,376
Non Families$40,716$47,060

$39,554

Average Income

$50,429

Median Household Income

13.97%

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)