StatisticThird LakeIllinoisNational
Population density (sq mi)2,15922891
Median age45.137.437.7
Male/Female ratio1.1:11.0:11.0:1
Married (15yrs & older)70%55%55%
Families w/ Kids under 1837%44%43%
Speak English94%77%79%
Speak Spanish2%13%13%

Key findings

  • The population density in Third Lake is 847% higher than Illinois
  • The median age in Third Lake is 21% higher than Illinois
  • In Third Lake 97.16% of the population is White
  • In Third Lake 0.24% of the population is Black
  • In Third Lake 0.47% of the population is Asian

Compare Third Lake, IL Demographics


      Third Lake population breakdown by race

      RaceThird LakeIllinoisNational
      American Indian0.00%0.23%0.82%
      Native Hawaiian0.00%0.03%0.18%
      Mixed race1.74%2.34%3.06%
      Other race0.39%5.86%4.75%
      In Third Lake, 5.5% 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

      Third Lake age breakdown

      Marital status

      Age of children in married couples

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