COUNTY
St. Charles County
Missouri · 426,499 residents (2025 est.) · 560.501 sq mi
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The short version
St. Charles County is wealthier than most US places, with a median household income of $104,692. Population has grown 46% since 2000. Median home value has more than doubled since 2000, reaching $320,800. Poverty is rare here, at 5.2% of residents. It ranks in the top 1% of US counties for household income. Households here earn about 48% more than the Missouri median.
At a glance
Wealthier
above the US median
US median: $82,259
Mid-age
median age 39.8
US median: 38.9
More educated
43% hold a bachelor's degree
US average: 36%
Less affordable
home values up 44%, inflation adjusted
US median home: $376,019
Section 01
Population & growth
PEP 2025 EST:426,499 residents (Census Bureau Vintage 2025, released March 2026)
Population, 1990 – 2024
2024415K
Age distribution, 2024
Under 55.4%(22,376)
5 to 96.4%(26,576)
10 to 146.5%(27,007)
15 to 196.5%(26,795)
20 to 245.9%(24,348)
25 to 3412.4%(51,357)
35 to 4414.2%(58,928)
45 to 5412.4%(51,522)
55 to 6413.3%(55,218)
65 to 7410.1%(41,929)
75 to 845.2%(21,413)
85 and over1.7%(7,066)
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02
Income & economy
$104,692
Unchangedinflation adjusted, since 2000
from $57,258 in 2000
US average: $82,259
1990 – 2024
Households earning $100K+
65.3%
+19.2 ptssince 2009
from 46.1% in 2009
US average: 53.3%
Workforce by industry, 2024
Retail trade12.6%
Information11.1%
Other services10.6%
Public administration8.6%
Wholesale trade7.1%
Finance & insurance4.5%
Professional, scientific, technical3.8%
Transportation & warehousing2.6%
Arts, entertainment, food1.7%
Education & health services0.8%
Agriculture, forestry, fishing0.7%
Construction0.6%
Manufacturing0.1%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 03
Housing
$320,800
+44%inflation adjusted, since 2000
from $122,600 in 2000
US average: $376,019
1990 – 2024
3.1
+11%since 2009
from 2.8 in 2009
2009 – 2024
Our index: median home value divided by median household income. Lower is more affordable.
54
Our index, 0 to 100. Higher means faster recent growth in incomes, home values, and college degrees.
RELATED:See current rent listings in St. Charles County on RentDataNow
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%
2024
White, non-Hispanic83%(343,925)
Black5%(20,824)
Hispanic / Latino4.2%(17,405)
Asian3%(12,472)
Other4.8%(19,909)
38
+71%since 2009
from 22 in 2009
2009 – 2024
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
18
−8%since 2020
from 20 in 2020
Our index, 0 to 100. Higher means White and non-White residents are more separated across neighborhoods.
Section 04 · Origins
Detailed origins & ancestry
Hispanic origin
Mexican2.4%(10,080)
South American0.4%(1,693)
Central American0.4%(1,608)
Puerto Rican0.4%(1,465)
Colombian0.2%(804)
Guatemalan0.1%(517)
Honduran0.1%(375)
Dominican0.1%(374)
Spaniard0.1%(372)
Peruvian0.1%(323)
Cuban0.1%(280)
Panamanian0.1%(239)
+ 9 more hispanic origin groups with data
Venezuelan0.1%(221)
Salvadoran0%(206)
Costa Rican0%(167)
Argentine0%(131)
Ecuadorian0%(107)
Nicaraguan0%(104)
Bolivian0%(54)
Uruguayan0%(33)
Chilean0%(20)
Asian origin
Asian Indian1.2%(5,083)
Vietnamese0.4%(1,752)
Chinese0.4%(1,697)
Filipino0.4%(1,510)
Korean0.2%(866)
Pakistani0.1%(397)
Japanese0.1%(240)
Thai0%(201)
Nepalese0%(130)
Bangladeshi0%(113)
Taiwanese0%(107)
Hmong0%(15)
+ 3 more asian origin groups with data
Ancestry
German31.3%(129,863)
Irish16.1%(66,607)
English12.6%(52,316)
Italian5.8%(23,858)
American5.8%(23,850)
French3.3%(13,570)
Polish2.9%(12,039)
Scottish2%(8,273)
Dutch0.9%(3,760)
Swedish0.8%(3,430)
Scotch-Irish0.7%(2,973)
Norwegian0.7%(2,913)
+ 49 more ancestry groups with data
Subsaharan African0.5%(2,217)
Arab0.5%(1,922)
Welsh0.4%(1,862)
Czech0.4%(1,659)
British0.4%(1,570)
Russian0.3%(1,300)
Swiss0.3%(1,297)
Danish0.3%(1,162)
Hungarian0.3%(1,097)
Greek0.2%(974)
Austrian0.2%(972)
Ukrainian0.2%(874)
French Canadian0.2%(787)
Croatian0.2%(762)
Lithuanian0.2%(718)
Lebanese0.1%(611)
Palestinian0.1%(583)
Iranian0.1%(579)
Portuguese0.1%(540)
Nigerian0.1%(516)
Egyptian0.1%(454)
Finnish0.1%(433)
Canadian0.1%(360)
Slovak0.1%(331)
West Indian0.1%(322)
Brazilian0.1%(312)
Ethiopian0.1%(301)
Belgian0.1%(234)
Jamaican0%(197)
Serbian0%(182)
Romanian0%(171)
Turkish0%(131)
Bulgarian0%(118)
Slovene0%(115)
Latvian0%(112)
Australian0%(109)
Armenian0%(85)
Syrian0%(77)
Israeli0%(67)
Trinidadian & Tobagonian0%(60)
Ghanaian0%(45)
Macedonian0%(32)
Jordanian0%(29)
Haitian0%(28)
Kenyan0%(22)
Moroccan0%(21)
Somali0%(16)
Guyanese0%(11)
Barbadian0%(2)
Section 05
Education
High school or higher
95.7%
+6.6 ptssince 2000
from 89.1% in 2000
US average: 89.6%
Section 06
Commute & transportation
Section 07
Work & employment
Section 08
People & community
Marital status
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
Drill deeper
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Places similar to St. Charles CountyHead to head
Compare St. Charles County to nearby counties
ST. CHARLES COUNTY VS
St. Louis County
Income$82,936−21%
Home value$276,800−14%
Population990,911+132%
SEE FULL COMPARISON →
ST. CHARLES COUNTY VS
Lincoln County
Income$89,278−15%
Home value$244,300−24%
Population66,676−84%
SEE FULL COMPARISON →
ST. CHARLES COUNTY VS
St. Louis
Income$56,160−46%
Home value$197,500−38%
Population278,144−35%
SEE FULL COMPARISON →
ST. CHARLES COUNTY VS
Warren County
Income$81,209−22%
Home value$260,400−19%
Population39,016−91%
SEE FULL COMPARISON →
Frequently asked
How many people live in St. Charles County, Missouri?
St. Charles County, Missouri has about 414,535 residents according to the 2024 American Community Survey.
What is the median household income in St. Charles County, Missouri?
The typical household in St. Charles County, Missouri earns about $104,692 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 $320,800, and the typical rent is about $1,370 a month.
How educated are people in St. Charles County, Missouri?
About 42.7% 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 5.2% 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 201,628 residents, a change of about 95 percent over that period.
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85 census tracts (top 20 by population)
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ZIP 63376ZIP 63366ZIP 63301ZIP 63385ZIP 63368ZIP 63303ZIP 63304ZIP 63367ZIP 63348ZIP 63341ZIP 63332ZIP 63373ZIP 63386ZIP 63365Up the hierarchy
All counties in MissouriDATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024