Marion County is a county of 33,642 people in Iowa. Few US counties rank higher on income. Owners hold 78% of the housing stock. 2% of locals were born outside the United States. The typical home is worth $233,000, having more than doubled since 2000. Renters pay $884 a month at the median.
At a glance
Average income
median household income $78,680, near the US median
US median: $82,259
Mid-age
median age 39.9
US median: 38.9
Average education
32% hold a bachelor's degree
US average: 36%
Less affordable
home values up 47%, inflation adjusted
US median home: $376,019
Unique to this place
What stands out about Marion County
What changed most since 1990
White share98.3% → 93.3%(−5.0 pts)US over the same years: −17.8 pts
Median home value (2024 dollars)$117,123 → $233,000(+99%)US over the same years: +67%
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)17.6%(258)
US avg: 26.4%
Gulf War (1990s)24.5%(359)
US avg: 24.3%
Vietnam era37.4%(548)
US avg: 33.1%
Korean War2.3%(34)
US avg: 4.5%
World War II1.7%(25)
US avg: 1%
Share of the 1,466 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
Marion County, decade by decade
Marion 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
30,001
$67,180
$117,123
12.9%
4.2
2000
32,052
$77,240
$158,666
18.9%
7.5
2010
33,309
$76,777
$197,516
24.0%
10.8
2020
33,414
$77,735
$194,047
30.8%
17.9
2024
33,642
$78,680
$233,000
32.1%
16.0
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.
