Population density (sq mi)2,31322891
Median age33.437.437.7
Male/Female ratio1.0:11.0:11.0:1
Married (15yrs & older)53%55%55%
Families w/ Kids under 1855%44%43%
Speak English74%77%79%
Speak Spanish22%13%13%

Key findings

  • The population density in Joliet is 915% higher than Illinois
  • The median age in Joliet is 11% lower than Illinois
  • In Joliet 66.42% of the population is White
  • In Joliet 16.33% of the population is Black
  • In Joliet 2.29% of the population is Asian

Compare Joliet, IL Demographics


      Joliet population breakdown by race

      American Indian0.39%0.23%0.82%
      Native Hawaiian0.01%0.03%0.18%
      Mixed race2.70%2.34%3.06%
      Other race11.86%5.86%4.75%
      In Joliet, 28.4% 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

      Joliet age breakdown

      Marital status

      Age of children in married couples

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