St. Charles County, Missouri
St. Charles County, Missouri, had an estimated population of 426,499 in 2025 across 1,451 km². The figures below come from the US Census Bureau's population estimates and the American Community Survey, each shown with its own vintage and its rank among Missouri's counties and nationally.
- Population
- 426,499
- 2025 estimate
- Area
- 1,451 km²
- Density
- 294
- per km²
- Median income
- $104,692
- household, ACS 2024
- Median age
- 39.8
- years, ACS 2024
How Missouri's counties spread
Amenities & Infrastructure
| Indicator | Value | In Missouri | In the US |
|---|---|---|---|
| Households with Broadband2024 | 95.1% | 1 / 115 | 61 / 3,144 |
| Median Gross Rent2024 | $1,370 | 1 / 115 | 342 / 3,137 |
| Median Home Value2024 | $320,800 | 2 / 115 | 532 / 3,139 |
| Owner-Occupied Homes2024 | 80.5% | 18 / 115 | 544 / 3,144 |
| Vacant Homes2024 | 3.5% | 115 / 115 | 3,109 / 3,144 |
Demography
| Indicator | Value | In Missouri | In the US |
|---|---|---|---|
| Aged 65 and Over2024 | 17.0% | 100 / 115 | 2,418 / 3,144 |
| American Indian & Alaska Native2024 | 0.0% | 97 / 115 | 2,461 / 3,144 |
| Asian, non-Hispanic2024 | 3.0% | 5 / 115 | 338 / 3,144 |
| Average Household Size2024people | 2.5 | 39 / 115 | 930 / 3,144 |
| Black, non-Hispanic2024 | 5.0% | 19 / 115 | 1,091 / 3,144 |
| Foreign-Born2024 | 4.5% | 14 / 115 | 1,074 / 3,144 |
| Hispanic or Latino2024 | 4.2% | 23 / 115 | 1,782 / 3,144 |
| Median Age2024years | 39.8 | 77 / 115 | 2,083 / 3,144 |
| Sex Ratio2024per 1,000 males | 1,021 | 35 / 115 | 1,026 / 3,144 |
| Speak a Language Other Than English2024 | 5.8% | 28 / 115 | 1,523 / 3,144 |
| Under 182024 | 22.5% | 62 / 115 | 1,261 / 3,144 |
| Veterans2024 | 6.6% | 92 / 115 | 1,961 / 3,144 |
| White, non-Hispanic2024 | 83.0% | 94 / 115 | 1,415 / 3,144 |
Economy
| Indicator | Value | In Missouri | In the US |
|---|---|---|---|
| Below Poverty Line2024 | 5.2% | 115 / 115 | 3,079 / 3,144 |
| Households on SNAP2024 | 3.6% | 115 / 115 | 3,016 / 3,144 |
| Income Inequality2024index | 0.408 | 100 / 115 | 2,755 / 3,144 |
| Median Household Income2024 | $104,692 | 1 / 115 | 125 / 3,143 |
| Per Capita Income2024 | $51,051 | 2 / 115 | 204 / 3,144 |
| Unemployment Rate2024 | 2.9% | 89 / 115 | 2,509 / 3,144 |
Education
| Indicator | Value | In Missouri | In the US |
|---|---|---|---|
| Bachelor's Degree or Higher2024 | 42.7% | 4 / 115 | 203 / 3,144 |
| High School or Higher2024 | 95.7% | 2 / 115 | 141 / 3,144 |
Health Coverage
| Indicator | Value | In Missouri | In the US |
|---|---|---|---|
| No Health Insurance2024 | 4.2% | 114 / 115 | 2,800 / 3,144 |
| With a Disability2024 | 11.7% | 112 / 115 | 2,729 / 3,144 |
Population & Density
| Indicator | Value | In Missouri | In the US |
|---|---|---|---|
| Population2025 | 426,499 | 3 / 115 | 180 / 3,144 |
| Population Density2025/km² | 294 | 4 / 115 | 200 / 3,144 |
Work & Commute
| Indicator | Value | In Missouri | In the US |
|---|---|---|---|
| Commute by Public Transit2024 | 0.1% | 62 / 115 | 1,727 / 3,144 |
| Households with No Vehicle2024 | 3.8% | 97 / 115 | 2,416 / 3,144 |
| Mean Commute Time2024minutes | 24.5 | 54 / 115 | 1,474 / 3,143 |
| Work from Home2024 | 18.0% | 4 / 115 | 213 / 3,144 |
Other counties of Missouri
- Adair County
- Andrew County
- Atchison County
- Audrain County
- Barry County
- Barton County
- Bates County
- Benton County
- Bollinger County
- Boone County
- Buchanan County
- Butler County
- Caldwell County
- Callaway County
- Camden County
- Cape Girardeau County
- Carroll County
- Carter County
- Cass County
- Cedar County
- Chariton County
- Christian County
- Clark County
- Clay County
- Clinton County
- Cole County
- Cooper County
- Crawford County
- Dade County
- Dallas County
- Daviess County
- DeKalb County
- Dent County
- Douglas County
- Dunklin County
- Franklin County
- Gasconade County
- Gentry County
- Greene County
- Grundy County
- Harrison County
- Henry County
- Hickory County
- Holt County
- Howard County
- Howell County
- Iron County
- Jackson County
- Jasper County
- Jefferson County
- Johnson County
- Knox County
- Laclede County
- Lafayette County
- Lawrence County
- Lewis County
- Lincoln County
- Linn County
- Livingston County
- Macon County
- Madison County
- Maries County
- Marion County
- McDonald County
- Mercer County
- Miller County
- Mississippi County
- Moniteau County
- Monroe County
- Montgomery County
- Morgan County
- New Madrid County
- Newton County
- Nodaway County
- Oregon County
- Osage County
- Ozark County
- Pemiscot County
- Perry County
- Pettis County
- Phelps County
- Pike County
- Platte County
- Polk County
- Pulaski County
- Putnam County
- Ralls County
- Randolph County
- Ray County
- Reynolds County
- Ripley County
- Saline County
- Schuyler County
- Scotland County
- Scott County
- Shannon County
- Shelby County
- St. Clair County
- St. Francois County
- St. Louis County
- St. Louis city
- Ste. Genevieve County
- Stoddard County
- Stone County
- Sullivan County
- Taney County
- Texas County
- Vernon County
- Warren County
- Washington County
- Wayne County
- Webster County
- Worth County
- Wright County
Compare St. Charles County against every other county on a map, add layers and run a scatter — open the atlas. Sources and vintages for every figure on this page are listed under datasets, or browse all 3,144 counties.