COUNTY · 1990 CENSUS

St. Clair County

Missouri · 8,457 residents · 675 sq mi

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With 8,457 people, St. Clair County is a county in Missouri. The median age is 42.3, about 9 years above the US median. The typical home is worth $27,000. Four-year degrees are less common here than nationally, at 8% of adults. Households here earn about 35% less than in Missouri as a whole. 75% of homes are owner-occupied.

At a glance

Lower income

below the US median

US median: $30,130

Older

median age 42.3

US median: 33.0

Less educated

8% hold a bachelor's degree

US average: 20%

More affordable

home values down 39%, inflation adjusted

US median home: $93,722

Section 01

Population & growth

Total population

8,457

−12%vs 2000

vs 9,652 in 2000

1990 – 2025

Median age

42.3

−4%vs 2000

vs 43.9 in 2000

US average: 33.0

Land area

675 sq mi

Population, 1990 – 2024

202410K

Age distribution, 1990

Under 56.1%(512)

US avg: 7.3%

5 to 96.2%(524)

US avg: 7.3%

10 to 146.8%(578)

US avg: 6.9%

15 to 196.6%(555)

US avg: 7.1%

20 to 244.2%(355)

US avg: 7.5%

25 to 3411.8%(1,000)

US avg: 17.5%

35 to 4411.4%(963)

US avg: 15.1%

45 to 5410.6%(897)

US avg: 10.2%

55 to 6413.1%(1,107)

US avg: 8.5%

65 to 7412.1%(1,025)

US avg: 7.3%

75 to 848%(677)

US avg: 4%

85 and over3.1%(264)

US avg: 1.2%

BAR + DOT: THIS PLACE · TICK: US AVERAGE

Section 02

Income & economy

Median household income

$17,265

−10%inflation adjusted, since 2000

vs $25,321 in 2000

US average: $30,130

1990 – 2024

Per capita income

$9,097

−35%vs 2000

vs $14,025 in 2000

US average: $14,340

Poverty rate

22.4%

+2.7 ptsvs 2000

vs 19.6% in 2000

US average: 13.2%

Section 03

Housing

Median home value

$27,000

−39%inflation adjusted, since 2000

vs $58,100 in 2000

US average: $93,722

1990 – 2024

Median gross rent

$217

−1%inflation adjusted, since 2000

vs $290 in 2000

US average: $450

Owner-occupied

75.2%

−4.2 ptsvs 2000

vs 79.4% in 2000

24.8% rent

Section 04

Race & ethnicity

2000

White, non-Hispanic96.7%(9,338)

Black0.2%(20)

Hispanic / Latino1%(95)

Asian0.1%(14)

Other0%

1990

White, non-Hispanic99.1%(8,378)

Black0.2%(13)

Hispanic / Latino0.7%(58)

Asian0.3%(26)

Other0.5%(40)

No data for the years selected.

Section 04 · Origins

Detailed origins & ancestry

Detailed origin tables are available for 2024; showing 2024 data.

Hispanic origin

Mexican1.6%(150)

Central American0.4%(35)

Salvadoran0.2%(23)

Panamanian0.1%(12)

South American0.1%(9)

Venezuelan0.1%(9)

Cuban0%(4)

Spaniard0%(1)

Asian origin

Vietnamese0.1%(12)

Korean0.1%(7)

Filipino0.1%(5)

Ancestry

German21%(2,011)

English11.6%(1,109)

Irish10.8%(1,034)

American9.7%(934)

Italian1.6%(152)

French1.4%(133)

Swedish0.8%(80)

Scotch-Irish0.8%(79)

Scottish0.8%(75)

Dutch0.8%(74)

Welsh0.6%(62)

Croatian0.6%(56)

+ 20 more ancestry groups with data

Norwegian0.4%(41)

Polish0.4%(35)

British0.3%(30)

Arab0.2%(20)

Syrian0.2%(20)

Danish0.2%(19)

Swiss0.2%(18)

Hungarian0.2%(17)

Turkish0.2%(16)

Russian0.2%(15)

Romanian0.1%(14)

Austrian0.1%(13)

Greek0.1%(13)

Czech0.1%(11)

Subsaharan African0.1%(11)

Canadian0.1%(9)

West Indian0.1%(9)

Belgian0.1%(5)

French Canadian0%(2)

Portuguese0%(1)

RANKED:Largest German population · Largest English population · Largest Irish population · Largest American population · Largest Italian population

Section 05

Education

Bachelor's degree or higher

7.9%

−1.1 ptsvs 2000

vs 9.0% in 2000

US average: 20.3%

High school or higher

60.8%

−12.3 ptsvs 2000

vs 73.1% in 2000

US average: 75.2%

Graduate degree

2.8%

−0.9 ptsvs 2000

vs 3.7% in 2000

US average: 7.1%

Section 06

Commute & transportation

Average commute

30.1 min

+29%vs 2000

vs 23.4 min in 2000

US average: 21.9

Section 07

Work & employment

No data for the years selected.

Section 08

People & community

No data for the years selected.

Marital status (2024)

Men 15+

Never married21.3%(857)

Married55.1%(2,215)

Widowed5.9%(236)

Divorced17.6%(709)

Women 15+

Never married19%(741)

Married53%(2,068)

Widowed11.7%(456)

Divorced16.4%(639)

SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024

Section 09

Health coverage

Showing 2024 (the nearest year with coverage data).

Uninsured

10.6%

−7.9 ptssince 2013

from 18.5% in 2013

US average: 8.4%

Employer-based

43.8%

+7.4 ptssince 2020

from 36.4% in 2020

US average: 54.8%

Direct-purchase

18.1%

−1.9 ptssince 2020

from 20.0% in 2020

US average: 13.8%

Medicare

28.1%

−3.5 ptssince 2020

from 31.6% in 2020

US average: 18.4%

Medicaid

21.7%

+1.7 ptssince 2020

from 20.0% in 2020

US average: 20.9%

VA health care

4.5%

Unchangedsince 2020

from 4.5% in 2020

US average: 2.2%

Any private

60.4%

+3.7 ptssince 2020

from 56.7% in 2020

US average: 67.1%

Any public

45.9%

−1.2 ptssince 2020

from 47.1% in 2020

US average: 36.7%

Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.

Section 09 · Service history

Veterans

Veterans by period of service, 2024

Gulf War (2001 or later)16.3%(107)

US avg: 26.4%

Gulf War (1990s)30.2%(199)

US avg: 24.3%

Vietnam era36.9%(243)

US avg: 33.1%

Korean War0.6%(4)

US avg: 4.5%

World War II2.3%(15)

US avg: 1%

Share of the 658 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.

BAR + DOT: THIS PLACE · TICK: US AVERAGE

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