United States › Illinois › Monroe County COUNTY · 2020 ACS
Monroe County Illinois · 34,962 residents · 385 sq mi
Time machine
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The short version
Monroe County is a county of 34,962 people in Illinois. Owners hold 82% of the housing stock. 1% of people here were born outside the United States. Households here earn about 31% more than in Illinois as a whole. The median age is 42.8, about 4 years above the US median. Poverty is uncommon here, at 3.1% of people here.
At a glance
Wealthier
above the US median
US median: $66,278
Older
median age 42.8
US median: 38.8
More educated
37% 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 37.5 in 2000
US average: 38.8
Population, 1990 – 2024
21K 25K 29K 33K 36K 1990 2000 2010 2020 2024 Monroe County Age distribution, 2020
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Section 02
Income & economy $89,648
+8%inflation adjusted, since 2000
from $55,320 in 2000
US average: $66,278
from $22,954 in 2000
US average: $35,364
Households earning $100K+
from 43.9% in 2009
US average: 43.9%
from 3.4% in 2000
US average: 12.8%
Workforce by industry, 2020
Public administration 7.7%
Professional, scientific, technical 4.1%
Agriculture, forestry, fishing 2.7%
Transportation & warehousing 2.2%
Arts, entertainment, food 1.5%
Education & health services 1.2%
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$220,600
+17%inflation adjusted, since 2000
from $125,900 in 2000
US average: $265,253
$846
Unchangedinflation adjusted, since 2000
from $562 in 2000
US average: $1,124
from 80.2% in 2000
18.1% rent
from 2.68 people in 2009
US average: 2.61
from 2.8 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 98.3%(27,156)
Hispanic / Latino 0.7%(203)
2020
White, non-Hispanic 93.5%(32,680)
Hispanic / Latino 1.8%(646)
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 20.4% in 2000
US average: 32.9%
High school or higher
from 87.2% in 2000
US average: 88.5%
from 7.0% in 2000
US average: 12.7%
Section 06
Commute & transportation from 21.1 min in 2000
US average: 26.9
from 81.8% in 2009
US average: 75.1%
from 2.7% in 2009
US average: 8.4%
Section 07
Work & employment from 5.4% in 2011
US average: 5.4%
from 69.2% in 2011
US average: 63.4%
Women 20-64 in the labor force
US average: 73.3%
from 32.7% in 2009
US average: 39.3%
Section 08
People & community from 1.2% in 2009
US average: 13.5%
from 5.9% in 2013
US average: 8.8%
Computer in household
US average: 91.9%
Marital status (2024)
Men 15+
Never married 26.1%(3,730)
Women 15+
Never married 19.7%(2,858)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Section 09
Health coverage from 5.9% 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) 13.3%(290)
Share of the 2,182 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 Monroe County Head to head
Compare Monroe County to nearby counties MONROE COUNTY VS
St. Clair County
Income $73,854 −18%
Home value $180,300 −18%
Population 250,708 +620%
SEE FULL COMPARISON →
MONROE COUNTY VS
Jefferson County
Income $82,851 −8%
Home value $237,200 +8%
Population 233,132 +569%
SEE FULL COMPARISON →
MONROE COUNTY VS
Randolph County
Income $68,131 −24%
Home value $135,100 −39%
Population 29,921 −14%
SEE FULL COMPARISON →
MONROE COUNTY VS
St. Louis
Income $56,160 −37%
Home value $197,500 −10%
Population 278,144 +698%
SEE FULL COMPARISON →
Frequently asked
How many people live in Monroe County, Illinois? Monroe County, Illinois has about 34,962 residents according to the 2020 American Community Survey.
What is the median household income in Monroe County, Illinois? The typical household in Monroe County, Illinois earns about $89,648 a year. Half of households make more than that, and half make less.
Is Monroe County, Illinois expensive? In Monroe County, Illinois, the median home is worth about $220,600, and the typical rent is about $846 a month.
How educated are people in Monroe County, Illinois? About 36.6% of adults age 25 and over in Monroe County, Illinois hold a bachelor's degree or higher.
What is the poverty rate in Monroe County, Illinois? About 3.1% of people in Monroe County, Illinois live below the federal poverty line.
Has Monroe County, Illinois grown since 1990? Yes, Monroe County, Illinois has grown since 1990. The population has added about 12,540 residents, a change of about 56 percent over that period.
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