Sioux County, Iowa Demographics 2026

Name: Sioux County, Iowa Demographics
Creator: U.S. Census Bureau
License: https://www.census.gov/data/developers/about/terms-of-service.html

Sioux County, Iowa has a population of 36,212, the 19th most populous county in Iowa. The median household income is $86,098 and the median home value is $250,100. The poverty rate is 6.7%.

Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes

Sioux County Quick Facts

Population 36,212

Median Household Income $86,098

Median Home Value $250,100

Poverty Rate 6.7%

Unemployment Rate 1.5%

Median Age 33.8 years

Homeownership Rate 76.1%

Affordability Ratio 2.9x

Bachelor's Degree+ 30.6%

High School Graduation 90.9%

Cities/Places 14

Population 36,212 19th of 99

Median Income $86,098 15% higher than state

Poverty Rate 6.7%

Unemployment 1.5%

How Sioux County Changed

Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.

Metric	2019–2023	2020–2024	Change
Population	35,984	36,212	+0.6%
Median household income	$84,736	$86,098	+1.6%
Median home value	$235,600	$250,100	+6.2%

Median Household Income

Sioux

$86,098

$75,059

National

$80,734

Median Home Value

Sioux

$250,100

$208,000

National

$332,700

Economy & Housing

Household Income Distribution

Under $25K 10.6%

$25K-$50K 16.3%

$50K-$100K 30.4%

$100K+ 42.7%

Detailed income brackets

Under $10K

3.9%

$10K-$15K

2.1%

$15K-$20K

2.3%

$20K-$25K

2.4%

$25K-$30K

4.4%

$30K-$35K

2.5%

$35K-$40K

3.2%

$40K-$45K

2.9%

$45K-$50K

3.3%

$50K-$60K

5.7%

$60K-$75K

9.2%

$75K-$100K

15.5%

$100K-$125K

14.2%

$125K-$150K

9.6%

$150K-$200K

8.9%

$200K+

10.0%

Employment

1.5% Unemployment Rate State: 3.6%|National: 5.2%

70.3% Labor Force Participation

Housing Overview

Owner 76.1%

Renter 23.9%

Affordability Index Very Affordable

2.9x home value to income ratio

Median gross rent $908/mo 12.7% of median household income annually

People & Demographics

Age Distribution

Under 18

27.2%

18-34

24.0%

35-54

21.7%

55-74

19.7%

75+

7.5%

Race & Ethnicity

Diversity Index

Low Diversity

A less diverse community where one racial or ethnic group represents a large majority.

State average: 31 | National average: 61

Education

Educational Attainment (Adults 25+)

Cities & Places in Sioux County

City	Population	Median Income	Poverty	Home Value
Sioux Center	8,454	$92,983	2.2%	$290,800
Orange City	6,426	$82,122	11.2%	$264,000
Sheldon	5,474	$62,159	15.3%	$192,700
Rock Valley	4,059	$76,250	9.3%	$231,200
Hawarden	2,658	$74,167	7.2%	$136,300
Hull	2,317	$72,344	5.5%	$225,700
Alton	1,459	$98,036	2.6%	$218,900
Hospers	916	$69,444	17.4%	$155,300
Boyden	757	$88,125	10.4%	$177,700
Ireton	552	$71,250	18.7%	$156,600
Granville	265	$68,750	7.2%	$162,500
Maurice	206	$68,750	9.2%	$169,800
Matlock	144	$83,365	1.4%	$95,000
Chatsworth	54	$44,375	13.0%	N/A

Explore Iowa Rankings

Cities by Population All cities ranked by size Richest Cities Ranked by median income Most Educated By bachelor's degree rate Most Affordable By housing affordability

Population Overview

Sioux County is located in Iowa with a total population of 36,212. It is the 19th most populous county out of 99 in Iowa. The county encompasses 14 Census-designated places.

Age Demographics

The median age in Sioux County is 33.8 years. This is 12% lower than the state median of 38.6 years.

Economy, Income & Housing

The median household income in Sioux County is $86,098. This is 15% higher than the state median of $75,059. It is also 7% higher than the national median of $80,734. The poverty rate stands at 6.7%. This is 40% lower than the state poverty rate of 11.1%. The unemployment rate is 1.5%. This is 58% lower than the state rate of 3.6%. The median home value is $250,100. Housing costs are 20% higher than the state median of $208,000. With a home-value-to-income ratio of just 2.9x, Sioux County is one of the most affordable housing markets in the area. 76.1% of occupied housing units are owner-occupied. This homeownership rate is 6% higher than the state average of 71.7%.

Race & Ethnicity

The largest racial or ethnic group in Sioux County is White (non-Hispanic), making up 82.8% of the population. Hispanic or Latino residents account for 14.3%. The Black or African American population (0.6%) is well below the state average of 3.8%. The Hispanic or Latino population is significantly higher than the state average (14.3% vs 7.3%). The Asian population (0.5%) is well below the state average of 2.5%.

Education

30.6% of residents aged 25 and older hold a bachelor's degree or higher. This is 3% lower than the state rate of 31.4%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 90.9%.

Data Sources & Methodology

All figures for Sioux County come from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates, with comparisons drawn against Iowa and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.

Frequently Asked Questions

What is the population of Sioux County, Iowa?

Sioux County has a population of 36,212, making it the 19th most populous county in Iowa.

What is the median income in Sioux County?

The median household income in Sioux County is $86,098 with a poverty rate of 6.7%.

How many cities are in Sioux County, Iowa?

Sioux County contains 14 Census-designated places.