Population density (sq mi)1,13322891
Median age30.437.437.7
Male/Female ratio0.9:11.0:11.0:1
Married (15yrs & older)58%55%55%
Families w/ Kids under 1867%44%43%
Speak English83%77%79%
Speak Spanish14%13%13%

Key findings

  • The population density in Cortland is 397% higher than Illinois
  • The median age in Cortland is 19% lower than Illinois
  • In Cortland 89.63% of the population is White
  • In Cortland 3.87% of the population is Black
  • In Cortland 2.22% of the population is Asian

Compare Cortland, IL Demographics


      Cortland population breakdown by race

      American Indian0.00%0.23%0.82%
      Native Hawaiian0.00%0.03%0.18%
      Mixed race1.89%2.34%3.06%
      Other race2.39%5.86%4.75%
      In Cortland, 18.0% 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

      Cortland age breakdown

      Marital status

      Age of children in married couples

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