Sioux County is a county of 36,212 people in Iowa. Few US counties rank higher on income. This skews young, with a median age of 33.8. Getting to work takes 13 minutes on average. 76% of homes are owner-occupied. There are 47 people per square mile.
At a glance
Average income
median household income $86,098, near the US median
US median: $82,259
Younger
median age 33.8
US median: 38.9
Average education
31% hold a bachelor's degree
US average: 36%
Less affordable
home values up 61%, inflation adjusted
US median home: $376,019
Unique to this place
What stands out about Sioux County
What changed most since 1990
Median home value (2024 dollars)$108,003 → $250,100(+132%)US over the same years: +67%
Median age31.1 → 33.8(+2.7 years)US over the same years: +6.0 years
Median household income (2024 dollars)$61,663 → $86,098(+40%)US over the same years: +14%
Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.
Section 09 · Service history
Veterans
Veterans by period of service, 2024
Gulf War (2001 or later)13.5%(130)
US avg: 26.4%
Gulf War (1990s)10.7%(103)
US avg: 24.3%
Vietnam era50.3%(486)
US avg: 33.1%
Korean War8.7%(84)
US avg: 4.5%
World War II0%(0)
US avg: 1%
Share of the 966 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Over time
Sioux County, decade by decade
Sioux County population, inflation-adjusted income and home value, education, and diversity by year
Year
Population
Median household income
Median home value
Bachelor's degree+
Diversity score
1990
29,903
$61,663
$108,003
14.4%
3.1
2000
31,589
$73,843
$155,569
19.8%
9.3
2010
33,704
$74,168
$172,485
22.4%
24.4
2020
35,872
$88,794
$221,197
29.5%
35.7
2024
36,212
$86,098
$250,100
30.6%
36.7
Census years come from the decennial census and the latest year from the American Community Survey, so part of any change between those two rows can reflect the different surveys. Dollar figures are adjusted for inflation to 2024 dollars; a figure ending in "+" was at the Census Bureau's reporting cap that year. The diversity score runs from 0 to 100; see how it's calculated.
