St. Clair Flag

St. Clair

County:
Franklin County
County Seat:
No
Area (mi²):
4.808
State:
Missouri

St. Clair is a city located in Franklin County, Missouri. St. Clair has a 2026 population of 4,706. St. Clair is currently declining at a rate of -0.44% annually and its population has decreased by -2.59% since the most recent census, which recorded a population of 4,831 in 2020.

The median household income in St. Clair is $41,820 with a poverty rate of 15.05%. The median age in St. Clair is 37.6 years: 34.9 years for males, and 40 years for females. For every 100 females there are 97.3 males.

4.7K
Total Population
979
Density (mi²)
-21 -0.44%
Growth

St. Clair Population

St. Clair Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
20264,706-21-0.44%
20254,727-21-0.44%
20244,748-8-0.17%
20234,756-34-0.71%
20224,790-23-0.48%
20214,813-19-0.39%
20204,8311342.85%
20194,697-29-0.61%
20184,726-11-0.23%
20174,737160.34%
20164,721210.45%
20154,70040.09%
20144,696-8-0.17%
20134,70400%
20124,704-28-0.59%
20114,73280.17%
20104,72400%
20004,39047312.08%
19903,91743212.4%
19803,48550717.02%
19702,9782679.85%
19602,71100%

Median Age

Overall: 37.6 years
Female: 40 years
Male: 34.9 years

St. Clair Adults

There are 3,779 adults, (776 of whom are seniors) in St. Clair.

Sex Ratio

Female: 2,427 (50.7%)
Male: 2,362 (49.3%)

Demographics

The racial composition of St. Clair includes 91.21% White, and smaller percentages for other race, Black or African American, Asian and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White4,36891.21%
Two or more races3427.14%
Other race360.75%
Black or African American270.56%
Asian160.33%
Race
Population ↓
Percentage (of total)
White791.65%
Other race360.75%
Race
Population ↓
Percentage (of total)
White4,28989.56%
Two or more races3427.14%
Black or African American270.56%
Asian160.33%

St. Clair Marital Status

Economics and Income Statistics

St. Clair 's average per capita income is $38,521. Household income levels show a median of $41,820. The poverty rate stands at 15.05%.

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$57,127-
Families$43,056$62,877
Households$41,820$57,248
Non Families$28,647$41,641

$38,521

Average Income

$41,820

Median Household Income

15.05%

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)