51,261 people live in St. Charles County, where the median age is 36.1 and the average individual income is $36,170. Data provided by the U.S. Census Bureau.
Total Population
Median Age
Population Density Population Density This is the number of people per square mile in a neighborhood.
Average individual Income
There's plenty to do around St. Charles County, including shopping, dining, nightlife, parks, and more. Data provided by Walk Score and Yelp.
St. Charles County has 20,441 households, with an average household size of 2.24. Data provided by the U.S. Census Bureau. Here’s what the people living in St. Charles County do for work — and how long it takes them to get there. Data provided by the U.S. Census Bureau. 51,261 people call St. Charles County home. The population density is 607.88 and the largest age group is between 25 and 64 years old. Data provided by the U.S. Census Bureau.
Total Population
Population Density Population Density This is the number of people per square mile in a neighborhood.
Median Age
Men vs Women
Population by Age Group
0-9 Years
10-17 Years
18-24 Years
25-64 Years
65-74 Years
75+ Years
Education Level
Total Households
Average Household Size
Average individual Income
Households with Children
With Children: 5,225 (26%)
Without Children: 15,216 (74%)
Marital Status
Blue vs White Collar Workers
Blue Collar: 10%
White Collar: 90%
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