StatisticSioux CityIowaNational
Population density (sq mi)1,4145791
Median age34.238.037.7
Male/Female ratio1.0:11.0:11.0:1
Married (15yrs & older)53%60%55%
Families w/ Kids under 1848%44%43%
Speak English82%92%79%
Speak Spanish14%4%13%

Key findings

  • The population density in Sioux City is 2381% higher than Iowa
  • The median age in Sioux City is 10% lower than Iowa
  • In Sioux City 83.91% of the population is White
  • In Sioux City 3.77% of the population is Black
  • In Sioux City 3.16% of the population is Asian

Compare Sioux City, IA Demographics


      Sioux City population breakdown by race

      RaceSioux CityIowaNational
      American Indian1.66%0.32%0.82%
      Native Hawaiian0.16%0.08%0.18%
      Mixed race3.26%1.97%3.06%
      Other race4.08%1.27%4.75%
      In Sioux City, 18.3% 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

      Sioux City age breakdown

      Marital status

      Age of children in married couples

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