StatisticSt. CharlesIowaNational
Population density (sq mi)1,4245791
Median age37.638.037.7
Male/Female ratio0.9:11.0:11.0:1
Married (15yrs & older)75%60%55%
Families w/ Kids under 1845%44%43%
Speak English100%92%79%
Speak Spanish0%4%13%

Key findings

  • The population density in St. Charles is 2398% higher than Iowa
  • The median age in St. Charles is 1% lower than Iowa
  • In St. Charles 96.86% of the population is White
  • In St. Charles 2.61% of the population is Black
  • In St. Charles 0.39% of the population is Asian

Compare St. Charles, IA Demographics


      St. Charles population breakdown by race

      RaceSt. CharlesIowaNational
      American Indian0.00%0.32%0.82%
      Native Hawaiian0.00%0.08%0.18%
      Mixed race0.13%1.97%3.06%
      Other race0.00%1.27%4.75%
      In St. Charles, 2.5% 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, IA demographics data displayed above is derived from the 2016 United States Census Bureau American Community Survey (ACS).