Population density (sq mi)1,20322891
Median age40.737.437.7
Male/Female ratio1.1:11.0:11.0:1
Married (15yrs & older)61%55%55%
Families w/ Kids under 1844%44%43%
Speak English96%77%79%
Speak Spanish1%13%13%

Key findings

  • The population density in Chillicothe is 428% higher than Illinois
  • The median age in Chillicothe is 9% higher than Illinois
  • In Chillicothe 98.20% of the population is White
  • In Chillicothe 0.28% of the population is Black
  • In Chillicothe 1.41% of the population is Asian

Compare Chillicothe, IL Demographics


      Chillicothe population breakdown by race

      American Indian0.11%0.23%0.82%
      Native Hawaiian0.00%0.03%0.18%
      Mixed race0.00%2.34%3.06%
      Other race0.00%5.86%4.75%
      In Chillicothe, 3.4% 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

      Chillicothe age breakdown

      Marital status

      Age of children in married couples

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