St. Clair County, Missouri

7 cities & places have their primary county here.

Population: 9,451
Median household income: $46,731
Median home value: $142,500

St. Clair County is a county in Missouri with a population of 9,451. 7 cities and places have their primary county here. The median household income of $46,731 is below the Missouri median ($68,920).

From 2019 to 2023, St. Clair County's population held roughly steady from 9,370 to 9,451, while its median household income rose 20.2% from $38,870 to $46,731.

The typical home was built around 1977. 16.3% of residents live below the poverty line.

Demographics

ACS 2019–2023

Population: 9,451
Median age: 47.2 yrs
Median household income: $46,731
Median home value: $142,500
Median gross rent: $607
Housing units: 5,295
Homeownership rate: 75.7%
Bachelor's degree or higher: 13.7%
Unemployment rate: 2.5%

Trends

ACS 5-year · 2019–2023

Population

9,3709,451

Median household income

$38,870$46,731

Median home value

$91,900$142,500

Median gross rent

$574$607

Year	Population	Median household income	Median home value	Median gross rent
2019	9,370	$38,870	$91,900	$574
2020	9,455	$39,000	$95,100	$532
2021	9,235	$40,470	$112,800	$568
2022	9,330	$43,483	$126,500	$572
2023	9,451	$46,731	$142,500	$607

Each year is a US Census Bureau ACS 5-year estimate ending that year.

Age distribution

Under 55.4%

5 to 1715.6%

18 to 246.3%

25 to 349.7%

35 to 4410.4%

45 to 5411.3%

55 to 6415.6%

65 to 7414.5%

75 and over11.3%

	Count	Share
Under 5	507	5.4%
5 to 17	1,474	15.6%
18 to 24	593	6.3%
25 to 34	914	9.7%
35 to 44	983	10.4%
45 to 54	1,067	11.3%
55 to 64	1,474	15.6%
65 to 74	1,373	14.5%
75 and over	1,066	11.3%

Race & ethnicity

	Count	Share
White (non-Hispanic)	8,782	92.9%
Black or African American	74	0.8%
American Indian & Alaska Native	11	0.1%
Asian	23	0.2%
Native Hawaiian & Pacific Islander	0	0.0%
Some other race	0	0.0%
Two or more races	358	3.8%
Hispanic or Latino (any race)	203	2.1%

Educational attainment (age 25+)

No high school diploma12.1%

High school graduate43.8%

Some college or associate's30.5%

Bachelor's degree9.6%

Graduate or professional degree4.0%

	Count	Share
No high school diploma	830	12.1%
High school graduate	3,012	43.8%
Some college or associate's	2,095	30.5%
Bachelor's degree	662	9.6%
Graduate or professional degree	278	4.0%

Commute to work

Mean travel time to work: 29 min

Drove alone76.5%

Carpooled13.6%

Public transit0.1%

Walked2.8%

Bicycle0.0%

Worked from home6.6%

Other means0.5%

How workers get to work

	Count	Share
Drove alone	2,892	76.5%
Carpooled	513	13.6%
Public transit	4	0.1%
Walked	105	2.8%
Bicycle	0	0.0%
Worked from home	250	6.6%
Other means	18	0.5%

Travel time

	Count	Share
Under 15 min	1,183	33.5%
15 to 29 min	1,089	30.8%
30 to 44 min	668	18.9%
45 to 59 min	128	3.6%
60+ min	464	13.1%

Households

Average household size: 2.26
Poverty rate: 16.3% (1,489 of 9,146)

	Count	Share
Family households	2,427	59.3%
Nonfamily households	1,663	40.7%

Housing

Median year structure built: 1977

Occupancy

	Count	Share
Occupied	4,090	77.2%
Vacant	1,205	22.8%

Tenure (of occupied units)

	Count	Share
Owner-occupied	3,096	75.7%
Renter-occupied	994	24.3%

1-unit, detached73.4%

1-unit, attached0.5%

2 to 4 units3.6%

5 to 19 units1.3%

20 or more units0.6%

Mobile home & other20.6%

Units in structure

	Count	Share
1-unit, detached	3,889	73.4%
1-unit, attached	25	0.5%
2 to 4 units	189	3.6%
5 to 19 units	71	1.3%
20 or more units	31	0.6%
Mobile home & other	1,090	20.6%

Geography

County GEOID: 29185
State: Missouri
Land area: 675 sq mi
Water area: 27 sq mi
Center point: 38.0422, -93.7766

Cities & places

Compare with nearby counties

Other counties in Missouri

114