United States › Illinois › Clinton County COUNTY · 2020 ACS
Clinton County Illinois · 36,899 residents · 474 sq mi
Time machine
COMPARE TO 1990 Census 2000 Census 2009 ACS 2010 ACS 2011 ACS 2012 ACS 2013 ACS 2014 ACS 2015 ACS 2016 ACS 2017 ACS 2018 ACS 2019 ACS 2021 ACS 2022 ACS 2023 ACS 2024 ACS
The short version
With 36,899 people, Clinton County is a county in Illinois. Owners hold 80% of the housing stock. 22% of adults hold a bachelor's degree or higher. 2% of people here were born outside the United States. Home values have more than doubled since 2000, reaching $145,700. Renters pay $777 a month at the median.
At a glance
Average income
near the US median
US median: $66,278
Older
median age 41.3
US median: 38.8
Less educated
22% hold a bachelor's degree
US average: 33%
Stable housing
home values roughly flat, inflation adjusted
US median home: $265,253
Section 01
Population & growth from 36.6 in 2000
US average: 38.8
Population, 1990 – 2024
34K 35K 36K 37K 38K 1990 2000 2010 2020 2024 Clinton County Age distribution, 2020
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Section 02
Income & economy $67,179
Unchangedinflation adjusted, since 2000
from $44,618 in 2000
US average: $66,278
from $19,109 in 2000
US average: $35,364
Households earning $100K+
from 32.6% in 2009
US average: 43.9%
from 6.4% in 2000
US average: 12.8%
Workforce by industry, 2020
Public administration 4.9%
Agriculture, forestry, fishing 4.6%
Professional, scientific, technical 4.5%
Transportation & warehousing 3.2%
Arts, entertainment, food 1.2%
Education & health services 1.1%
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$145,700
+20%inflation adjusted, since 2000
from $80,500 in 2000
US average: $265,253
$777
+20%inflation adjusted, since 2000
from $430 in 2000
US average: $1,124
from 80.2% in 2000
20.4% rent
2.42 people
Unchangedsince 2009
from 2.41 people in 2009
US average: 2.61
from 2.2 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 93.5%(33,220)
Hispanic / Latino 1.6%(570)
2020
White, non-Hispanic 89%(32,845)
Hispanic / Latino 3.8%(1,387)
Our index, 0 to 100. Higher means White and non-White residents are more separated across neighborhoods.
Section 04 · Origins
Detailed origins & ancestry Ancestry
+ 24 more ancestry groups with data from 13.0% in 2000
US average: 32.9%
High school or higher
from 77.4% in 2000
US average: 88.5%
from 3.2% in 2000
US average: 12.7%
Section 06
Commute & transportation from 19.3 min in 2000
US average: 26.9
from 81.0% in 2009
US average: 75.1%
from 5.2% in 2009
US average: 8.4%
Section 07
Work & employment from 5.5% in 2011
US average: 5.4%
from 65.5% in 2011
US average: 63.4%
Women 20-64 in the labor force
US average: 73.3%
from 29.2% in 2009
US average: 39.3%
Section 08
People & community from 1.6% in 2009
US average: 13.5%
from 7.0% in 2013
US average: 8.8%
Computer in household
US average: 91.9%
Marital status (2024)
Men 15+
Never married 33.8%(5,342)
Women 15+
Never married 20.9%(3,042)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Section 09
Health coverage from 7.0% in 2013
US average: 8.8%
Direct-purchase
US average: 13.7%
VA health care
US average: 2.3%
Any private
US average: 68.1%
Any public
US average: 35.2%
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, 2020
Gulf War (2001 or later) 22.7%(689)
Gulf War (1990s) 27.2%(825)
Share of the 3,033 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 Clinton County Head to head
Compare Clinton County to nearby counties CLINTON COUNTY VS
Washington County
Income $78,224 +16%
Home value $155,700 +7%
Population 13,564 −63%
SEE FULL COMPARISON →
CLINTON COUNTY VS
Bond County
Income $65,959 −2%
Home value $145,700 same
Population 16,959 −54%
SEE FULL COMPARISON →
CLINTON COUNTY VS
Marion County
Income $61,240 −9%
Home value $103,000 −29%
Population 36,382 −2%
SEE FULL COMPARISON →
CLINTON COUNTY VS
St. Clair County
Income $73,854 +10%
Home value $180,300 +24%
Population 250,708 +575%
SEE FULL COMPARISON →
Frequently asked
How many people live in Clinton County, Illinois? Clinton County, Illinois has about 36,899 residents according to the 2020 American Community Survey.
What is the median household income in Clinton County, Illinois? The typical household in Clinton County, Illinois earns about $67,179 a year. Half of households make more than that, and half make less.
Is Clinton County, Illinois expensive? In Clinton County, Illinois, the median home is worth about $145,700, and the typical rent is about $777 a month.
How educated are people in Clinton County, Illinois? About 21.7% of adults age 25 and over in Clinton County, Illinois hold a bachelor's degree or higher.
What is the poverty rate in Clinton County, Illinois? About 7.8% of people in Clinton County, Illinois live below the federal poverty line.
Has Clinton County, Illinois grown since 1990? Yes, Clinton County, Illinois has grown since 1990. The population has added about 2,955 residents, a change of about 9 percent over that period.
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