US Census Data

St. Charles County, Missouri

18 cities & places have their primary county here.

Population
409,830
+3.9%’19–’23
Median household income
$102,912
+21.1%’19–’23
Median home value
$296,800
+35.5%’19–’23

St. Charles County, Missouri counts 409,830 residents. 18 cities and places have their primary county here. The median household income of $102,912 is above the Missouri median ($68,920).

From 2019 to 2023, St. Charles County's population grew 3.9% from 394,290 to 409,830, while its median household income rose 21.1% from $84,978 to $102,912.

The median gross rent is $1,312. 42.4% of adults 25 and older hold a bachelor's degree or higher.

Demographics

ACS 2019–2023
Population
409,830
Median age
39.6 yrs
Median household income
$102,912
Median home value
$296,800
Median gross rent
$1,312
Housing units
164,594
Homeownership rate
80.7%
Bachelor's degree or higher
42.4%
Unemployment rate
2.8%

Trends

ACS 5-year · 2019–2023
Population
394,290409,830
Median household income
$84,978$102,912
Median home value
$219,100$296,800
Median gross rent
$1,041$1,312
YearPopulationMedian household incomeMedian home valueMedian gross rent
2019394,290$84,978$219,100$1,041
2020398,472$87,644$230,100$1,069
2021402,377$91,792$242,700$1,118
2022406,262$99,596$278,300$1,209
2023409,830$102,912$296,800$1,312

Each year is a US Census Bureau ACS 5-year estimate ending that year.

Age distribution

CountShare
Under 522,5385.5%
5 to 1771,00417.3%
18 to 2433,2268.1%
25 to 3450,92112.4%
35 to 4457,82314.1%
45 to 5451,40112.5%
55 to 6455,52813.5%
65 to 7440,3199.8%
75 and over27,0706.6%

Race & ethnicity

CountShare
White (non-Hispanic)343,81583.9%
Black or African American20,2284.9%
American Indian & Alaska Native1610.0%
Asian11,5792.8%
Native Hawaiian & Pacific Islander1570.0%
Some other race1,2100.3%
Two or more races16,1343.9%
Hispanic or Latino (any race)16,5464.0%

Educational attainment (age 25+)

CountShare
No high school diploma12,8754.5%
High school graduate63,73922.5%
Some college or associate's86,43630.5%
Bachelor's degree75,83026.8%
Graduate or professional degree44,18215.6%

Commute to work

Mean travel time to work
25 min

How workers get to work

CountShare
Drove alone165,90676.2%
Carpooled12,6315.8%
Public transit1580.1%
Walked1,5420.7%
Bicycle600.0%
Worked from home34,75716.0%
Other means2,7501.3%

Travel time

CountShare
Under 15 min40,33822.0%
15 to 29 min76,21841.6%
30 to 44 min47,43625.9%
45 to 59 min12,1276.6%
60+ min6,9283.8%

Households

Average household size
2.54
Poverty rate
4.7% (18,911 of 402,737)
CountShare
Family households111,14270.0%
Nonfamily households47,54030.0%

Housing

Median year structure built
1994

Occupancy

CountShare
Occupied158,68296.4%
Vacant5,9123.6%

Tenure (of occupied units)

CountShare
Owner-occupied128,04580.7%
Renter-occupied30,63719.3%

Units in structure

CountShare
1-unit, detached122,81374.6%
1-unit, attached12,4977.6%
2 to 4 units6,2263.8%
5 to 19 units11,4567.0%
20 or more units7,0014.3%
Mobile home & other4,6012.8%

Geography

County GEOID
29183
State
Missouri
Land area
561 sq mi
Water area
32 sq mi
Center point
38.7811, -90.6749

Cities & places

18

Compare with nearby counties

5

Missouri rankings

21

Other counties in Missouri

114