Sioux County, IA — Demographics & Population
Population, age distribution, race & ethnicity, and education data
Population Overview
Source: Census Bureau ACS (2023)Total Population
35,984
Male
18,052
50.2%
Female
17,932
49.8%
Median Age
34.0 yrs
Avg Household Size
2.7
Foreign Born
7.6%
Race & Ethnicity
Source: Census Bureau ACS (2023)Age Distribution
Source: Census Bureau ACS (2023)Education
Source: Census Bureau ACS (2023)Bachelor's or Higher18.0%
High School or Higher34.4%
Other Demographics
Source: Census Bureau ACS (2023)Veterans
3.1%
Disability
0.0%
Non-English Home
5.6%
Married
49.6%
Sioux County, IA has a population of 35,984 according to 2023 Census Bureau estimates. The median age is 34.0 years. The largest racial or ethnic group is White at 87.8% of the population. 18.0% of residents hold a bachelor's degree or higher. 7.6% of residents are foreign-born.