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COUNTY · 2010 ACS

St. Charles County

Missouri · 360,485 residents · 561 sq mi
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The short version

St. Charles County is a county of 360,485 people in Missouri. That is roughly 52% ahead of the Missouri median. Owners hold 81% of the housing stock. The population is up 27% since 2000. Poverty is uncommon here, at 5.0% of people here. 3% of people here were born outside the United States.

At a glance
Wealthier
above the US median
US median: $52,703
Mid-age
median age 36.9
US median: 37.2
More educated
33% hold a bachelor's degree
US average: 28%
Less affordable
home values up 27%, inflation adjusted
US median home: $225,659
Section 01

Population & growth

Total population
360,485
+27%since 2000
from 283,883 in 2000
1990 – 2025
Median age
36.9
+8%since 2000
from 34.3 in 2000
US average: 37.2
Land area
561 sq mi
Population, 1990 – 2024
193K253K314K374K435K19902000201020202024St. Charles County
2024415K
1990201020202024
Age distribution, 2010
Under 56.7%(24,297)
US avg: 6.5%
5 to 97.3%(26,202)
US avg: 6.6%
10 to 147.4%(26,625)
US avg: 6.7%
15 to 197%(25,276)
US avg: 7.1%
20 to 245.9%(21,443)
US avg: 7%
25 to 3413.2%(47,485)
US avg: 13.3%
35 to 4414%(50,643)
US avg: 13.3%
45 to 5415.9%(57,251)
US avg: 14.6%
55 to 6411.3%(40,885)
US avg: 11.8%
65 to 746.4%(22,933)
US avg: 7%
75 to 843.6%(12,799)
US avg: 4.2%
85 and over1.3%(4,646)
US avg: 1.8%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02

Income & economy

Median household income
$70,331
−3%inflation adjusted, since 2000
from $57,258 in 2000
US average: $52,703
1990 – 2024
Per capita income
$30,664
+30%since 2000
from $23,592 in 2000
US average: $27,286
Households earning $100K+
46.4%
+0.4 ptssince 2009
from 46.1% in 2009
US average: 33.3%
Poverty rate
5.0%
+1.0 ptssince 2000
from 4.0% in 2000
US average: 13.8%
Income inequality (Gini)
0.373
US average: 0.461
Workforce by industry, 2010
Retail trade12.9%
US avg: 10.9%
Information12.4%
US avg: 11.5%
Other services9.9%
US avg: 7%
Public administration7.9%
US avg: 4.9%
Wholesale trade7%
US avg: 7.2%
Finance & insurance5%
US avg: 5.1%
Professional, scientific, technical4.3%
US avg: 4.2%
Transportation & warehousing4%
US avg: 3.1%
Arts, entertainment, food2.7%
US avg: 2.4%
Education & health services0.7%
US avg: 0.9%
Agriculture, forestry, fishing0.5%
US avg: 1.9%
Construction0.4%
US avg: 1.4%
Manufacturing0%
US avg: 0.5%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 03

Housing

Median home value
$197,300
+27%inflation adjusted, since 2000
from $122,600 in 2000
US average: $225,659
1990 – 2024
Median gross rent
$819
+4%inflation adjusted, since 2000
from $624 in 2000
US average: $853
Owner-occupied
80.6%
−1.4 ptssince 2000
from 82.0% in 2000
19.4% rent
Vacancy rate
4.8%
Unchangedsince 2009
from 4.7% in 2009
US average: 12.1%
Persons per household
2.64 people
Unchangedsince 2009
from 2.65 people in 2009
US average: 2.60
Owner cost-burdened
23.2%
+0.2 ptssince 2009
from 23.1% in 2009
US average: 30.9%
Renter cost-burdened
42.2%
+2.9 ptssince 2009
from 39.3% in 2009
US average: 46.8%
Afford Score
2.8
+2%since 2009
from 2.8 in 2009
2009 – 2024
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
Section 04

Race & ethnicity

2000
White, non-Hispanic93.8%(266,158)
Black2.7%(7,573)
Hispanic / Latino1.5%(4,176)
Asian0.8%(2,397)
Other0%
2010
White, non-Hispanic89.1%(321,078)
Black4.1%(14,827)
Hispanic / Latino2.8%(9,983)
Asian2.2%(7,789)
Other1.5%(5,444)

No data for the years selected.

Section 04 · Origins

Detailed origins & ancestry

Hispanic origin
Mexican1.7%(6,010)
Puerto Rican0.3%(990)
Spaniard0.1%(370)
Cuban0.1%(245)
Guatemalan0.1%(182)
Honduran0%(165)
Colombian0%(157)
Peruvian0%(78)
+ 7 more hispanic origin groups with data
Ancestry
German40.4%(141,741)
Irish19.1%(67,108)
English11.5%(40,320)
Italian7.2%(25,182)
American6.6%(23,266)
French5.3%(18,608)
Polish3.2%(11,380)
Scotch-Irish2%(6,890)
Scottish1.9%(6,718)
Dutch1.9%(6,580)
Swedish1.1%(3,746)
Norwegian0.9%(3,016)
+ 43 more ancestry groups with data
Welsh0.8%(2,702)
Czech0.6%(2,123)
Swiss0.5%(1,758)
Greek0.5%(1,751)
Danish0.5%(1,700)
Russian0.5%(1,695)
Hungarian0.4%(1,358)
French Canadian0.4%(1,232)
British0.3%(1,190)
Austrian0.3%(1,167)
Arab0.3%(1,121)
Lithuanian0.2%(679)
Croatian0.2%(538)
Slovak0.1%(500)
Ukrainian0.1%(426)
West Indian0.1%(401)
Lebanese0.1%(392)
Canadian0.1%(391)
Iranian0.1%(379)
Finnish0.1%(317)
Portuguese0.1%(311)
Romanian0.1%(302)
Brazilian0.1%(297)
Belgian0.1%(244)
Bulgarian0.1%(232)
Armenian0%(172)
Serbian0%(161)
Egyptian0%(146)
Slovene0%(123)
Somali0%(77)
Turkish0%(73)
Latvian0%(70)
Jamaican0%(37)
Syrian0%(17)
Moroccan0%(14)
Jordanian0%(11)
Guyanese0%(11)
Israeli0%(9)
Section 05

Education

Bachelor's degree or higher
33.4%
+7.0 ptssince 2000
from 26.3% in 2000
US average: 27.9%
High school or higher
92.2%
+3.0 ptssince 2000
from 89.1% in 2000
US average: 84.9%
Graduate degree
10.8%
+3.0 ptssince 2000
from 7.8% in 2000
US average: 10.2%
Section 06

Commute & transportation

Average commute
25.0 min
+41%since 2000
from 17.7 min in 2000
US average: 25.2
Drive alone to work
86.8%
Unchangedsince 2009
from 86.7% in 2009
US average: 76.2%
Carpooled to work
7.1%
−0.1 ptssince 2009
from 7.3% in 2009
US average: 10.4%
Public transit
0.2%
Unchangedsince 2009
from 0.1% in 2009
US average: 4.7%
Worked from home
4.2%
Unchangedsince 2009
from 4.1% in 2009
US average: 4.1%
Walked to work
0.9%
+0.1 ptssince 2009
from 0.8% in 2009
US average: 2.8%
Biked to work
0.1%
Unchangedsince 2009
from 0.1% in 2009
US average: 0.5%
No vehicle available
3.2%
+0.2 ptssince 2009
from 2.9% in 2009
US average: 8.7%
Section 07

Work & employment

Self-employed
9.4%
Unchangedsince 2009
from 9.4% in 2009
US average: 12.9%
Management & professional
39.9%
+0.8 ptssince 2009
from 39.1% in 2009
US average: 35.2%
Section 08

People & community

Male
49.1%
−0.2 ptssince 2009
from 49.3% in 2009
Female
50.9%
+0.2 ptssince 2009
from 50.7% in 2009
Foreign born
3.4%
+0.3 ptssince 2009
from 3.2% in 2009
US average: 12.8%
Veterans
10.6%
−0.5 ptssince 2009
from 11.1% in 2009
US average: 9.9%
Marital status (2024)
Men 15+
Never married30.5%(50,668)
Married59%(98,118)
Widowed2.1%(3,562)
Divorced8.3%(13,854)
Women 15+
Never married25.4%(43,713)
Married55%(94,825)
Widowed7.7%(13,298)
Divorced11.9%(20,538)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Section 09

Health coverage

Showing 2024 (the nearest year with coverage data).

Uninsured
4.2%
−3.0 ptssince 2013
from 7.2% in 2013
US average: 8.4%
Employer-based
72.2%
−2.7 ptssince 2020
from 74.9% in 2020
US average: 54.8%
Direct-purchase
11.6%
−0.8 ptssince 2020
from 12.4% in 2020
US average: 13.8%
Medicare
17.7%
+1.4 ptssince 2020
from 16.3% in 2020
US average: 18.4%
Medicaid
7.3%
+1.8 ptssince 2020
from 5.5% in 2020
US average: 20.9%
VA health care
1.6%
Unchangedsince 2020
from 1.6% in 2020
US average: 2.2%
Any private
82.1%
−3.2 ptssince 2020
from 85.3% in 2020
US average: 67.1%
Any public
24.4%
+3.3 ptssince 2020
from 21.1% 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)22.1%(4,684)
US avg: 26.4%
Gulf War (1990s)22.6%(4,804)
US avg: 24.3%
Vietnam era36.2%(7,684)
US avg: 33.1%
Korean War3.6%(757)
US avg: 4.5%
World War II0.8%(177)
US avg: 1%

Share of the 21,217 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
Drill deeper

Places similar to St. Charles County

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Pop 433,415
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Pop 457,710
Sonoma County
Pop 486,444
Mercer County
Pop 399,289
Places similar to St. Charles County
Head to head

Compare St. Charles County to nearby counties

ST. CHARLES COUNTY VS
St. Louis County
Income$82,936+18%
Home value$276,800+40%
Population990,911+132%
SEE FULL COMPARISON →
ST. CHARLES COUNTY VS
Lincoln County
Income$89,278+27%
Home value$244,300+24%
Population66,676−84%
SEE FULL COMPARISON →
ST. CHARLES COUNTY VS
St. Louis
Income$56,160−20%
Home value$197,500same
Population278,144−35%
SEE FULL COMPARISON →
ST. CHARLES COUNTY VS
Warren County
Income$81,209+15%
Home value$260,400+32%
Population39,016−91%
SEE FULL COMPARISON →
Frequently asked

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

St. Charles County, Missouri has about 360,485 residents according to the 2010 American Community Survey.

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

The typical household in St. Charles County, Missouri earns about $70,331 a year. Half of households make more than that, and half make less.

Is St. Charles County, Missouri expensive?

In St. Charles County, Missouri, the median home is worth about $197,300, and the typical rent is about $819 a month.

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

About 33.4% of adults age 25 and over in St. Charles County, Missouri hold a bachelor's degree or higher.

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

About 5.0% of people in St. Charles County, Missouri live below the federal poverty line.

Has St. Charles County, Missouri grown since 1990?

Yes, St. Charles County, Missouri has grown since 1990. The population has added about 147,578 residents, a change of about 69 percent over that period.

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

How we source and harmonize this data →