StatisticSt. JohnsArizonaNational
Population density (sq mi)1376591
Median age35.537.137.7
Male/Female ratio0.9:11.0:11.0:1
Married (15yrs & older)55%53%55%
Families w/ Kids under 1838%42%43%
Speak English88%73%79%
Speak Spanish9%20%13%

Key findings

  • The population density in St. Johns is 110% higher than Arizona
  • The median age in St. Johns is 4% lower than Arizona
  • In St. Johns 84.78% of the population is White
  • In St. Johns 0.20% of the population is Black
  • In St. Johns 0.00% of the population is Asian

Compare St. Johns, AZ Demographics


      St. Johns population breakdown by race

      RaceSt. JohnsArizonaNational
      American Indian2.65%4.41%0.82%
      Native Hawaiian0.23%0.19%0.18%
      Mixed race7.14%3.31%3.06%
      Other race5.00%6.97%4.75%
      In St. Johns, 27.1% 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. Johns age breakdown

      Marital status

      Age of children in married couples

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