St. Charles County, Missouri
Population, percent change - April 1, 2020 (estimates base) to July 1, 2025, (V2025) 5.2%
People
Population
Population estimates, July 1, 2025, (V2025) 426,499
Population estimates, July 1, 2024, (V2024) 423,726
Population estimates base, April 1, 2020, (V2025) 405,266
Population estimates base, April 1, 2020, (V2024) 405,265
Population, percent change - April 1, 2020 (estimates base) to July 1, 2025, (V2025) 5.2%
Population, percent change - April 1, 2020 (estimates base) to July 1, 2024, (V2024) 4.6%
Population, Census, April 1, 2020 405,262
Population, Census, April 1, 2010 360,485
Age and Sex
Persons under 5 years, percent 5.2%
Persons under 18 years, percent 21.9%
Persons 65 years and over, percent 18.1%
Female persons, percent 50.5%
Race and Hispanic Origin
White alone, percent 86.8%
Black alone, percent(a) 6.6%
American Indian and Alaska Native alone, percent(a) 0.2%
Asian alone, percent(a) 3.9%
Native Hawaiian and Other Pacific Islander alone, percent(a) 0.1%
Two or More Races, percent 2.4%
Hispanic or Latino, percent(b) 4.5%
White alone, not Hispanic or Latino, percent 82.9%
Population Characteristics
Veterans, 2020-2024 21,217
Foreign-born persons, percent, 2020-2024 4.5%
Housing
Housing Units, July 1, 2025, (V2025) 174,278
Owner-occupied housing unit rate, 2020-2024 80.5%
Median value of owner-occupied housing units, 2020-2024 $320,800
Median selected monthly owner costs - with a mortgage, 2020-2024 $1,866
Median selected monthly owner costs - without a mortage, 2020-2024 $696
Median gross rent, 2020-2024 $1,370
Building Permits, 2025 1,661
Families & Living Arrangements
Households, 2020-2024 161,311
Persons per household, 2020-2024 2.53
Living in the same house 1 year ago, percent of persons age 1 year+ , 2020-2024 89.6%
Language other than English spoken at home, percent of persons age 5 years+, 2020-2024 5.8%
Computer and Internet Use
Households with a computer, percent, 2020-2024 97.4%
Households with a broadband Internet subscription, percent, 2020-2024 95.1%
Education
High school graduate or higher, percent of persons age 25 years+, 2020-2024 95.7%
Bachelor's degree or higher, percent of persons age 25 years+, 2020-2024 42.7%
Health
With a disability, under age 65 years, percent, 2020-2024 7.9%
Persons without health insurance, under age 65 years, percent 5.1%
Economy
In civilian labor force, total, percent of population age 16 years+, 2020-2024 69.3%
In civilian labor force, female, percent of population age 16 years+, 2020-2024 65.0%
Total accommodation and food services sales, 2022 ($1,000)(c) 1,489,892
Total health care and social assistance receipts/revenue, 2022 ($1,000)(c) 2,417,608
Total transportation and warehousing receipts/revenue, 2022 ($1,000)(c) 812,281
Total retail sales, 2022 ($1,000)(c) 10,815,980
Total retail sales per capita, 2022(c) $26,138
Transportation
Mean travel time to work (minutes), workers age 16 years+, 2020-2024 24.5
Income & Poverty
Median households income (in 2024 dollars), 2020-2024 $104,692
Per capita income in past 12 months (in 2024 dollars), 2020-2024 $51,051
Persons in poverty, percent 6.3%
Businesses
Businesses
Total employer establishments, 2023 8,946
Total employment, 2023 143,624
Total annual payroll, 2023 ($1,000) 8,115,491
Total employment, percent change, 2022-2023 1.1%
Total nonemployer establishments, 2023 32,540
All employer firms, Reference year 2023 6,529
Male-owned employer firms, Reference year 2023 3,672
Female-owned employer firms, Reference year 2023 1,377
Minority-owned employer firms, Reference year 2023 631
Nonminority-owned employer firms, Reference year 2023 5,103
Veteran-owned employer firms, Reference year 2023 275
Nonveteran-owned employer firms, Reference year 2023 5,478
Geography
Geography
Population per square mile, 2020 723.0
Population per square mile, 2010 643.2
Land area in square miles, 2020 560.50
Land area in square miles, 2010 560.44
FIPS Code 29183