Marion is a city of 16,836 people in Illinois. Home values have more than doubled since 2000, reaching $158,300. Households here earn about 32% less than in Illinois as a whole. The foreign-born share is 2%. At a median age of 42.2, this is an older place than the country as a whole. 29% of adults hold a bachelor's degree or higher.
At a glance
Lower income
median household income $56,912, below the US median
US median: $82,259
Older
median age 42.2
US median: 38.9
Less educated
29% hold a bachelor's degree
US average: 36%
Less affordable
home values up 34%, inflation adjusted
US median home: $376,019
Unique to this place
What stands out about Marion
What changed most since 1990
White share94.6% → 84.5%(−10.2 pts)US over the same years: −17.8 pts
Homes owned by their occupants67.4% → 63.3%(−4.1 pts)US over the same years: +0.9 pts
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)20.7%(264)
US avg: 26.4%
Gulf War (1990s)21.7%(276)
US avg: 24.3%
Vietnam era33.8%(430)
US avg: 33.1%
Korean War3.3%(42)
US avg: 4.5%
World War II5.3%(68)
US avg: 1%
Share of the 1,273 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, decade by decade
Marion 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
14,545
$52,041
$103,203
15.7%
12.9
2000
16,035
$55,313
$118,043
16.8%
18.8
2010
17,193
$53,946
$136,952
23.9%
31.1
2020
16,855
$54,456
$152,232
25.4%
41.1
2024
16,836
$56,912
$158,300
28.5%
34.7
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.
