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COUNTY · 2000 CENSUS

St. Clair County

Missouri · 9,652 residents · 674.981 sq mi
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The short version

St. Clair County has notably lower household income than the US average, with a median household income of $25,321. Population has held roughly steady since 1990. 9% of adults hold a bachelor's degree or higher, below the national rate of 24%. Median home value has more than doubled since 1990, reaching $58,100. With a median age of 43.9, the population is older than the US median of 35.2. Households here earn about 33% less than the Missouri median.

At a glance
Lower income
below the US median
US median: $42,589
Older
median age 43.9
US median: 35.2
Less educated
9% hold a bachelor's degree
US average: 24%
Less affordable
home values up 63%, inflation adjusted
US median home: $120,530
Section 01

Population & growth

9,652
+14%since 1990
from 8,457 in 1990
1990 – 2025
14 / sq mi
+14%since 1990
from 13 / sq mi in 1990
US average: 242
43.9
+4%since 1990
from 42.3 in 1990
US average: 35.2
Population, 19902024
8K9K9K10K10K1990201020202024St. Clair County
202410K
1990201020202024
Section 02

Income & economy

$25,321
+11%inflation adjusted, since 1990
from $17,265 in 1990
US average: $42,589
1990 – 2024
$14,025
+54%since 1990
from $9,097 in 1990
US average: $21,522
19.6%
−2.7 ptssince 1990
from 22.4% in 1990
US average: 12.4%
Section 03

Housing

$58,100
+63%inflation adjusted, since 1990
from $27,000 in 1990
US average: $120,530
1990 – 2024
$290
+1%inflation adjusted, since 1990
from $217 in 1990
US average: $602
79.4%
+4.2 ptssince 1990
from 75.2% in 1990
20.6% rent
2.3
+47%since 1990
from 1.6 in 1990
1990 – 2024
RELATED:See current rent listings in St. Clair County on RentDataNow
Section 04

Race & ethnicity

1990
White, non-Hispanic99.1%(8,378)
Black0.2%(13)
Hispanic / Latino0.7%(58)
Asian0.3%(26)
Diversity Score4%(337)
2000
White, non-Hispanic96.7%(9,338)
Black0.2%(20)
Hispanic / Latino1%(95)
Asian0.1%(14)
Diversity Score3.4%(325)
3
−15%since 1990
from 4 in 1990
1990 – 2024
Section 05

Education

9.0%
+1.1 ptssince 1990
from 7.9% in 1990
US average: 24.4%
High school or higher
73.1%
+12.3 ptssince 1990
from 60.8% in 1990
US average: 80.3%
3.7%
+0.9 ptssince 1990
from 2.8% in 1990
US average: 8.8%
Section 06

Commute & transportation

23.4 min
−22%since 1990
from 30.1 min in 1990
US average: 17.6
Section 07

Work & employment

No data for the years selected.

Section 08

People & community

No data for the years selected.

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Frequently asked

How many people live in St. Clair County, Missouri?

St. Clair County, Missouri has about 9,652 residents according to the 2000 Census.

What is the median household income in St. Clair County, Missouri?

The typical household in St. Clair County, Missouri earns about $25,321 a year. Half of households make more than that, and half make less.

Is St. Clair County, Missouri expensive?

In St. Clair County, Missouri, the median home is worth about $58,100, and the typical rent is about $290 a month.

How educated are people in St. Clair County, Missouri?

About 9.0% of adults age 25 and over in St. Clair County, Missouri hold a bachelor's degree or higher.

What is the poverty rate in St. Clair County, Missouri?

About 19.6% of people in St. Clair County, Missouri live below the federal poverty line.

Has St. Clair County, Missouri grown since 1990?

Yes, St. Clair County, Missouri has grown since 1990. The population has added about 1,195 residents, a change of about 14 percent over that period.

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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

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