Marion County vs Sioux County

A side-by-side comparison of Marion County and Sioux County: population, income, housing, and more.

Marion County and Sioux County are counties in Iowa. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.

Sioux County has the higher population (35,984 vs 33,551 in Marion County). Sioux County has the higher median household income ($84,736 vs $78,059 in Marion County). Sioux County has the higher median home value ($235,600 vs $211,100 in Marion County).

Population, income & housing

	Marion County	Sioux County
Population	33,551	35,984
Median age	39.7 yrs	34.0 yrs
Median household income	$78,059	$84,736
Median home value	$211,100	$235,600
Median gross rent	$880	$888
Housing units	14,268	13,175
Homeownership rate	77.7%	77.8%
Bachelor's degree or higher	33.1%	30.4%
Unemployment rate	1.9%	2.0%

Trends (ACS 5-year, 2019–2023)

	Marion County	Sioux County
Population	33,172 → 33,551 (+1.1%)	34,827 → 35,984 (+3.3%)
Median household income	$61,038 → $78,059 (+27.9%)	$69,844 → $84,736 (+21.3%)
Median home value	$157,300 → $211,100 (+34.2%)	$167,500 → $235,600 (+40.7%)
Median gross rent	$721 → $880 (+22.1%)	$726 → $888 (+22.3%)

Marion County

Population

33,17233,551

Median household income

$61,038$78,059

Median home value

$157,300$211,100

Median gross rent

$721$880

Sioux County

Population

34,82735,984

Median household income

$69,844$84,736

Median home value

$167,500$235,600

Median gross rent

$726$888

Age & race/ethnicity

Age distribution (share)

	Marion County	Sioux County
Under 5	5.6%	7.2%
5 to 17	17.7%	20.2%
18 to 24	10.0%	13.3%
25 to 34	10.4%	10.6%
35 to 44	12.2%	12.3%
45 to 54	11.5%	9.8%
55 to 64	13.5%	10.8%
65 to 74	10.4%	8.5%
75 and over	8.5%	7.4%

Race & ethnicity (share)

	Marion County	Sioux County
White (non-Hispanic)	93.6%	83.6%
Black or African American	0.5%	0.6%
American Indian & Alaska Native	0.1%	0.1%
Asian	1.3%	0.6%
Native Hawaiian & Pacific Islander	0.0%	0.0%
Some other race	0.1%	0.3%
Two or more races	2.1%	1.0%
Hispanic or Latino	2.2%	13.8%

Educational attainment (age 25+)

Share of adults 25+

	Marion County	Sioux County
No high school diploma	5.4%	9.4%
High school graduate	32.7%	27.6%
Some college or associate's	28.8%	32.6%
Bachelor's degree	23.0%	21.5%
Graduate or professional degree	10.1%	8.9%

Commute to work

How workers get to work (share)

	Marion County	Sioux County
Drove alone	79.1%	74.3%
Carpooled	5.8%	7.4%
Public transit	0.2%	0.3%
Walked	3.7%	3.5%
Bicycle	0.3%	0.6%
Worked from home	9.7%	13.3%
Other means	1.1%	0.6%

Housing

Units in structure (share)

	Marion County	Sioux County
1-unit, detached	78.1%	80.4%
1-unit, attached	3.0%	4.2%
2 to 4 units	5.1%	5.9%
5 to 19 units	6.8%	4.9%
20 or more units	2.5%	2.6%
Mobile home & other	4.4%	2.0%

Poverty & households

	Marion County	Sioux County
Poverty rate	7.1%	6.4%
Average household size	2.38	2.68
Mean commute (minutes)	20	13
Median year structure built	1975	1972