StatisticDecatur CityIowaNational
Population density (sq mi)5165791
Median age36.838.037.7
Male/Female ratio1.0:11.0:11.0:1
Married (15yrs & older)65%60%55%
Families w/ Kids under 1842%44%43%
Speak English90%92%79%
Speak Spanish3%4%13%

Key findings

  • The population density in Decatur City is 805% higher than Iowa
  • The median age in Decatur City is 3% lower than Iowa
  • In Decatur City 99.02% of the population is White
  • In Decatur City 0.00% of the population is Black
  • In Decatur City 0.00% of the population is Asian

Compare Decatur City, IA Demographics


      Decatur City population breakdown by race

      RaceDecatur CityIowaNational
      American Indian0.00%0.32%0.82%
      Native Hawaiian0.00%0.08%0.18%
      Mixed race0.98%1.97%3.06%
      Other race0.00%1.27%4.75%
      In Decatur City, 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

      Decatur City age breakdown

      Marital status

      Age of children in married couples

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