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COUNTY · 2000 CENSUS

Sioux County

Iowa · 31,589 residents · 767.911 sq mi
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The short version

Sioux County has roughly average household income, with a median household income of $40,536. Population has held roughly steady since 1990. Median home value has more than doubled since 1990, reaching $85,400.

At a glance
Average income
near the US median
US median: $42,589
Younger
median age 32.8
US median: 35.2
Less educated
20% hold a bachelor's degree
US average: 24%
Less affordable
home values up 44%, inflation adjusted
US median home: $120,530
Section 01

Population & growth

Total population
31,589
+6%since 1990
from 29,903 in 1990
1990 – 2025
Population density
41 / sq mi
+6%since 1990
from 39 / sq mi in 1990
US average: 242
Median age
32.8
+6%since 1990
from 31.1 in 1990
US average: 35.2
Population, 1990 – 2024
29K31K33K35K37K1990201020202024Sioux County
202436K
1990201020202024
Section 02

Income & economy

Median household income
$40,536
+20%inflation adjusted, since 1990
from $25,692 in 1990
US average: $42,589
1990 – 2024
Per capita income
$16,532
+59%since 1990
from $10,411 in 1990
US average: $21,522
Poverty rate
6.4%
−1.6 ptssince 1990
from 8.1% in 1990
US average: 12.4%
Section 03

Housing

Median home value
$85,400
+44%inflation adjusted, since 1990
from $45,000 in 1990
US average: $120,530
1990 – 2024
Median gross rent
$385
+9%inflation adjusted, since 1990
from $268 in 1990
US average: $602
Owner-occupied
80.5%
+2.2 ptssince 1990
from 78.2% in 1990
19.5% rent
Afford Score
2.1
+20%since 1990
from 1.8 in 1990
1990 – 2024
RELATED:See current rent listings in Sioux County on RentDataNow
Section 04

Race & ethnicity

1990
White, non-Hispanic99%(29,616)
Black0.1%(22)
Hispanic / Latino0.4%(108)
Asian0.6%(177)
Diversity Score3.3%(975)
2000
White, non-Hispanic96.2%(30,374)
Black0.2%(57)
Hispanic / Latino2.6%(808)
Asian0.6%(185)
Diversity Score8.1%(2,567)
Diversity Score
8
+149%since 1990
from 3 in 1990
1990 – 2024
Section 05

Education

Bachelor's degree or higher
19.8%
+5.3 ptssince 1990
from 14.4% in 1990
US average: 24.4%
High school or higher
80.4%
+8.6 ptssince 1990
from 71.7% in 1990
US average: 80.3%
Graduate degree
6.4%
+1.4 ptssince 1990
from 5.0% in 1990
US average: 8.8%
Section 06

Commute & transportation

Average commute
10.6 min
−56%since 1990
from 24.0 min in 1990
US average: 17.6
Section 07

Work & employment

No data for the years selected.

Section 08

People & community

No data for the years selected.

Drill deeper

Places similar to Sioux County

Clinton County
Pop 37,128
Jefferson County
Pop 35,297
Wakulla County
Pop 38,089
Lee County
Pop 34,179
Places similar to Sioux County
Head to head

Compare Sioux County to nearby counties

SIOUX COUNTY VS
Lyon County
Income$76,746+89%
Home value$230,000+169%
Population12,354−66%
SEE FULL COMPARISON →
SIOUX COUNTY VS
Plymouth County
Income$83,251+105%
Home value$228,900+168%
Population25,697−30%
SEE FULL COMPARISON →
SIOUX COUNTY VS
O'Brien County
Income$68,356+69%
Home value$173,100+103%
Population14,220−61%
SEE FULL COMPARISON →
SIOUX COUNTY VS
Union County
Income$89,636+121%
Home value$301,100+253%
Population17,402−53%
SEE FULL COMPARISON →
Frequently asked

How many people live in Sioux County, Iowa?

Sioux County, Iowa has about 31,589 residents according to the 2000 Census.

What is the median household income in Sioux County, Iowa?

The typical household in Sioux County, Iowa earns about $40,536 a year. Half of households make more than that, and half make less.

Is Sioux County, Iowa expensive?

In Sioux County, Iowa, the median home is worth about $85,400, and the typical rent is about $385 a month.

How educated are people in Sioux County, Iowa?

About 19.8% of adults age 25 and over in Sioux County, Iowa hold a bachelor's degree or higher.

What is the poverty rate in Sioux County, Iowa?

About 6.4% of people in Sioux County, Iowa live below the federal poverty line.

Has Sioux County, Iowa grown since 1990?

Yes, Sioux County, Iowa has grown since 1990. The population has added about 1,686 residents, a change of about 6 percent over that period.

Keep going

Explore from here

9 census tracts
Census Tract 703Census Tract 702Census Tract 706.02Census Tract 701Census Tract 707.02Census Tract 704Census Tract 707.01Census Tract 705Census Tract 706.01
13 ZIP codes
ZIP 51250ZIP 51041ZIP 51201ZIP 51247ZIP 51023ZIP 51239ZIP 51003ZIP 51238ZIP 51027ZIP 51234ZIP 51036ZIP 51244ZIP 51011
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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

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