United States › Illinois › Marion County COUNTY · 2010 ACS
Marion County Illinois · 39,437 residents · 573 sq mi
Time machine
COMPARE TO 1990 Census 2000 Census 2009 ACS 2011 ACS 2012 ACS 2013 ACS 2014 ACS 2015 ACS 2016 ACS 2017 ACS 2018 ACS 2019 ACS 2020 ACS 2021 ACS 2022 ACS 2023 ACS 2024 ACS
The short version
With 39,437 people, Marion County is a county in Illinois. Four-year degrees are less common here than nationally, at 14% of adults. The typical home is worth $71,400. The foreign-born share is 1%. The median age is 41.4, about 4 years above the US median. That trails the Illinois median by roughly 30%.
At a glance
Lower income
below the US median
US median: $52,703
Older
median age 41.4
US median: 37.2
Less educated
14% hold a bachelor's degree
US average: 28%
Stable housing
home values roughly flat, inflation adjusted
US median home: $225,659
Section 01
Population & growth from 38.4 in 2000
US average: 37.2
Population, 1990 – 2024
37K 38K 39K 41K 42K 1990 2000 2010 2020 2024 Marion County Age distribution, 2010
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Section 02
Income & economy $38,974
−13%inflation adjusted, since 2000
from $35,227 in 2000
US average: $52,703
from $17,235 in 2000
US average: $27,286
Households earning $100K+
from 18.1% in 2009
US average: 33.3%
from 11.3% in 2000
US average: 13.8%
Workforce by industry, 2010
Professional, scientific, technical 7.7%
Agriculture, forestry, fishing 2.9%
Transportation & warehousing 2.4%
Arts, entertainment, food 2.3%
Education & health services 0.5%
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$71,400
+5%inflation adjusted, since 2000
from $53,500 in 2000
US average: $225,659
$565
+20%inflation adjusted, since 2000
from $371 in 2000
US average: $853
from 76.6% in 2000
25.8% rent
from 11.1% in 2009
US average: 12.1%
from 2.36 people in 2009
US average: 2.60
from 21.7% in 2009
US average: 30.9%
from 41.2% in 2009
US average: 46.8%
from 1.8 in 2009
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
Section 04
Race & ethnicity 2000
White, non-Hispanic 93.4%(38,951)
Hispanic / Latino 0.9%(378)
2010
White, non-Hispanic 92.4%(36,456)
Hispanic / Latino 1.4%(542)
No data for the years selected.
Section 04 · Origins
Detailed origins & ancestry Ancestry
+ 26 more ancestry groups with data from 12.1% in 2000
US average: 27.9%
High school or higher
from 79.1% in 2000
US average: 84.9%
from 4.1% in 2000
US average: 10.2%
Section 06
Commute & transportation from 13.7 min in 2000
US average: 25.2
from 81.6% in 2009
US average: 76.2%
from 10.0% in 2009
US average: 10.4%
from 0.5% in 2009
US average: 4.7%
from 3.3% in 2009
US average: 4.1%
from 2.4% in 2009
US average: 2.8%
from 0.5% in 2009
US average: 0.5%
from 8.1% in 2009
US average: 8.7%
Section 07
Work & employment from 13.2% in 2009
US average: 12.9%
from 24.1% in 2009
US average: 35.2%
Section 08
People & community from 1.1% in 2009
US average: 12.8%
from 12.4% in 2009
US average: 9.9%
Marital status (2024)
Men 15+
Never married 32.1%(4,677)
Women 15+
Never married 24.3%(3,712)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Section 09
Health coverage Showing 2024 (the nearest year with coverage data).
from 11.5% in 2013
US average: 8.4%
from 48.3% in 2020
US average: 54.8%
Direct-purchase
from 13.3% in 2020
US average: 13.8%
from 22.0% in 2020
US average: 18.4%
from 29.8% in 2020
US average: 20.9%
VA health care
from 4.3% in 2020
US average: 2.2%
Any private
from 60.3% in 2020
US average: 67.1%
Any public
from 49.3% in 2020
US average: 36.7%
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) 25.4%(559)
Share of the 2,199 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.
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Drill deeper
Places similar to Marion County Head to head
Compare Marion County to nearby counties MARION COUNTY VS
Jefferson County
Income $63,118 +62%
Home value $126,000 +76%
Population 36,147 −1%
SEE FULL COMPARISON →
MARION COUNTY VS
Clay County
Income $60,417 +55%
Home value $97,400 +36%
Population 12,793 −65%
SEE FULL COMPARISON →
MARION COUNTY VS
Fayette County
Income $60,944 +56%
Home value $130,700 +83%
Population 20,790 −43%
SEE FULL COMPARISON →
MARION COUNTY VS
Clinton County
Income $86,588 +122%
Home value $192,400 +169%
Population 37,128 +2%
SEE FULL COMPARISON →
Frequently asked
How many people live in Marion County, Illinois? Marion County, Illinois has about 39,437 residents according to the 2010 American Community Survey.
What is the median household income in Marion County, Illinois? The typical household in Marion County, Illinois earns about $38,974 a year. Half of households make more than that, and half make less.
Is Marion County, Illinois expensive? In Marion County, Illinois, the median home is worth about $71,400, and the typical rent is about $565 a month.
How educated are people in Marion County, Illinois? About 13.6% of adults age 25 and over in Marion County, Illinois hold a bachelor's degree or higher.
What is the poverty rate in Marion County, Illinois? About 16.5% of people in Marion County, Illinois live below the federal poverty line.
Has Marion County, Illinois grown since 1990? Yes, Marion County, Illinois has shrunk since 1990. The population has lost about 2,124 residents, a change of about -5 percent over that period.
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