StatisticSt. AugustineIllinoisNational
Population density (sq mi)19222891
Median age55.637.437.7
Male/Female ratio0.7:11.0:11.0:1
Married (15yrs & older)65%55%55%
Families w/ Kids under 1814%44%43%
Speak English100%77%79%
Speak Spanish0%13%13%

Key findings

  • The population density in St. Augustine is 16% lower than Illinois
  • The median age in St. Augustine is 49% higher than Illinois
  • In St. Augustine 100.00% of the population is White
  • In St. Augustine 0.00% of the population is Black
  • In St. Augustine 0.00% of the population is Asian

Compare St. Augustine, IL Demographics


      St. Augustine population breakdown by race

      RaceSt. AugustineIllinoisNational
      American Indian0.00%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 St. Augustine, 0.0% 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

      St. Augustine age breakdown

      Marital status

      Age of children in married couples

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