Population density (sq mi)1,07522891
Median age40.137.437.7
Male/Female ratio0.9:11.0:11.0:1
Married (15yrs & older)59%55%55%
Families w/ Kids under 1838%44%43%
Speak English96%77%79%
Speak Spanish2%13%13%

Key findings

  • The population density in Marion is 372% higher than Illinois
  • The median age in Marion is 7% higher than Illinois
  • In Marion 87.87% of the population is White
  • In Marion 7.82% of the population is Black
  • In Marion 1.77% of the population is Asian

Compare Marion, IL Demographics


      Marion population breakdown by race

      American Indian0.05%0.23%0.82%
      Native Hawaiian0.03%0.03%0.18%
      Mixed race2.24%2.34%3.06%
      Other race0.22%5.86%4.75%
      In Marion, 2.7% 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

      Marion age breakdown

      Marital status

      Age of children in married couples

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