Sioux City demographics profile

StatisticSioux CityIowaNational
Population density (sq mi)1,4145591
Median age34.238.037.7
Male/Female ratio1.0:11.0:11.0:1
Married (15yrs & older)53%60%55%
Speak English82%92%79%
Speak Spanish14%4%13%
Sioux City, IA has a population of 82,666 and is the 416th largest city in the United States. The population density is 1,414 per sq mi which is 2489% higher than the Iowa average and 1461% higher than the national average. The median age in Sioux City is 34 which is approximately 10% lower than the Iowa average of 38. In Sioux City, 53% of the population over 15 years of age are married, 82% speak English and 14% speak Spanish. 66% of Sioux City residents were born in Iowa, 23% were born out of state, 1% were born outside of the United States and 10% were foreign born.

Did you know?

  • The population density in Sioux City is 2489% higher than Iowa.
  • The median age in Sioux City is 10% lower than Iowa.
  • In Sioux City 83.91% of the population is Caucasian.
  • In Sioux City 3.77% of the population is African American.
  • In Sioux City 3.16% of the population is Asian.

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Sioux City population breakdown by race

RaceSioux CityIowaNational
African American3.77%3.32%12.63%
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.

Languages spoken

Place of birth by citizenship

Household income distribution

Source of income

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).