StatisticSt. CharlesIllinoisNational
Population density (sq mi)2,23322891
Median age42.637.437.7
Male/Female ratio0.9:11.0:11.0:1
Married (15yrs & older)63%55%55%
Families w/ Kids under 1846%44%43%
Speak English87%77%79%
Speak Spanish6%13%13%

Key findings

  • The population density in St. Charles is 879% higher than Illinois
  • The median age in St. Charles is 14% higher than Illinois
  • In St. Charles 88.35% of the population is White
  • In St. Charles 1.64% of the population is Black
  • In St. Charles 3.56% of the population is Asian

Compare St. Charles, IL Demographics


      St. Charles population breakdown by race

      RaceSt. CharlesIllinoisNational
      American Indian0.18%0.23%0.82%
      Native Hawaiian0.05%0.03%0.18%
      Mixed race1.78%2.34%3.06%
      Other race4.44%5.86%4.75%
      In St. Charles, 8.7% 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, IL demographics data displayed above is derived from the 2016 United States Census Bureau American Community Survey (ACS).