StatisticSt. CharlesMissouriNational
Population density (sq mi)2,8389091
Median age35.838.337.7
Male/Female ratio0.9:11.0:11.0:1
Married (15yrs & older)53%57%55%
Families w/ Kids under 1842%42%43%
Speak English91%94%79%
Speak Spanish4%3%13%

Key findings

  • The population density in St. Charles is 3053% higher than Missouri
  • The median age in St. Charles is 7% lower than Missouri
  • In St. Charles 85.80% of the population is White
  • In St. Charles 6.73% of the population is Black
  • In St. Charles 2.78% of the population is Asian

Compare St. Charles, MO Demographics


      St. Charles population breakdown by race

      RaceSt. CharlesMissouriNational
      American Indian0.21%0.42%0.82%
      Native Hawaiian0.04%0.11%0.18%
      Mixed race3.41%2.44%3.06%
      Other race1.02%1.13%4.75%
      In St. Charles, 4.8% of people are of Hispanic or Latino origin.
      Please note: Hispanics may be of any race, so also are included in any/all of the applicable race categories above.

      Household income distribution

      Place of birth by citizenship

      St. Charles age breakdown

      Marital status

      Age of children in married couples

      Source: The St. Charles, MO demographics data displayed above is derived from the 2016 United States Census Bureau American Community Survey (ACS).