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COUNTY

Monroe County

Illinois · 34,840 residents (2025 est.) · 385.301 sq mi
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Notable rankings
#41Lowest poverty rateof 3,1445.0%#140Highest homeownership rateof 3,14484.7%#147Highest median household incomeof 3,143$102,880
The short version

Monroe County is wealthier than most US places, with a median household income of $102,880. Population has grown 27% since 2000. Median home value has more than doubled since 2000, reaching $282,100. Poverty is rare here, at 5.0% of residents. It ranks in the top 1% of US counties for household income.

At a glance
Wealthier
above the US median
US median: $82,259
Older
median age 43.2
US median: 38.9
Average education
39% hold a bachelor's degree
US average: 36%
Stable housing
home values roughly flat, inflation adjusted
US median home: $376,019
Section 01

Population & growth

Total population
35,036
+27%since 2000
from 27,619 in 2000
1990 – 2025
Population density
91 / sq mi
+8%since 2009
from 84 / sq mi in 2009
US average: 281
Median age
43.2
+15%since 2000
from 37.5 in 2000
US average: 38.9

PEP 2025 EST:34,840 residents (Census Bureau Vintage 2025, released March 2026)

Population, 1990 – 2024
21K25K29K33K36K1990201020202024Monroe County
202435K
1990201020202024
Age distribution, 2024
Under 55.2%(1,807)
US avg: 5.6%
5 to 95.7%(1,998)
US avg: 6%
10 to 147%(2,468)
US avg: 6.4%
15 to 195.8%(2,021)
US avg: 6.6%
20 to 244.8%(1,683)
US avg: 6.5%
25 to 3410.5%(3,665)
US avg: 13.7%
35 to 4413.7%(4,789)
US avg: 13.2%
45 to 5412.4%(4,342)
US avg: 12.2%
55 to 6415.3%(5,350)
US avg: 12.7%
65 to 7412%(4,202)
US avg: 10.2%
75 to 845.3%(1,872)
US avg: 5.1%
85 and over2.4%(839)
US avg: 1.9%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02

Income & economy

Median household income
$102,880
+2%inflation adjusted, since 2000
from $55,320 in 2000
US average: $82,259
1990 – 2024
Per capita income
$49,605
+116%since 2000
from $22,954 in 2000
US average: $44,673
Households earning $100K+
64.0%
+20.1 ptssince 2009
from 43.9% in 2009
US average: 53.3%
Poverty rate
5.0%
+1.7 ptssince 2000
from 3.4% in 2000
US average: 12.5%
Income inequality (Gini)
0.403
+4%since 2010
from 0.386 in 2010
US average: 0.476
Workforce by industry, 2024
Information12.3%
US avg: 10.8%
Retail trade10.9%
US avg: 9.9%
Other services9%
US avg: 6.7%
Wholesale trade7.5%
US avg: 6.9%
Public administration7.5%
US avg: 4.8%
Finance & insurance6%
US avg: 5.9%
Professional, scientific, technical3.9%
US avg: 5.1%
Agriculture, forestry, fishing3.1%
US avg: 1.6%
Construction2.7%
US avg: 1.2%
Education & health services2.1%
US avg: 0.9%
Transportation & warehousing2.1%
US avg: 2.2%
Arts, entertainment, food1.5%
US avg: 1.9%
Manufacturing0.4%
US avg: 0.4%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 03

Housing

Median home value
$282,100
+23%inflation adjusted, since 2000
from $125,900 in 2000
US average: $376,019
1990 – 2024
Median gross rent
$1,042
+2%inflation adjusted, since 2000
from $562 in 2000
US average: $1,442
Owner-occupied
84.7%
+4.5 ptssince 2000
from 80.2% in 2000
15.3% rent
Vacancy rate
6.2%
+0.4 ptssince 2009
from 5.7% in 2009
US average: 10.0%
Owner cost-burdened
16.5%
−7.1 ptssince 2009
from 23.7% in 2009
US average: 22.9%
Renter cost-burdened
44.1%
+10.5 ptssince 2009
from 33.7% in 2009
US average: 47.4%
Afford Score
2.7
−3%since 2009
from 2.8 in 2009
2009 – 2024
Our index: median home value divided by median household income. Lower is more affordable.
Gentrification Score
51
Our index, 0 to 100. Higher means faster recent growth in incomes, home values, and college degrees.
RELATED:See current rent listings in Monroe County on RentDataNow
Section 04

Race & ethnicity

2000
White, non-Hispanic98.3%(27,156)
Black0%(11)
Hispanic / Latino0.7%(203)
Asian0.3%(85)
Other0%
2024
White, non-Hispanic95%(33,291)
Black0.6%(207)
Hispanic / Latino1.9%(683)
Asian0.6%(209)
Other1.8%(646)
Diversity Score
12
+59%since 2009
from 8 in 2009
2009 – 2024
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
Segregation Score
18
−13%since 2020
from 20 in 2020
Our index, 0 to 100. Higher means White and non-White residents are more separated across neighborhoods.
Section 04 · Origins

Detailed origins & ancestry

Hispanic origin
Mexican1.3%(450)
Puerto Rican0.3%(90)
Guatemalan0.2%(81)
Spaniard0.1%(50)
Cuban0%(3)
Asian origin
Chinese0.2%(83)
Korean0.1%(52)
Mongolian0.1%(26)
Filipino0.1%(23)
Vietnamese0.1%(18)
Pacific Islander origin
Ancestry
German40.7%(14,275)
Irish13.2%(4,618)
English10.4%(3,637)
American5.2%(1,834)
Italian4%(1,400)
Polish3.4%(1,180)
French3.1%(1,087)
Swedish1.1%(383)
Scottish1%(336)
Scotch-Irish0.9%(302)
Dutch0.8%(269)
Czech0.6%(217)
+ 23 more ancestry groups with data
Swiss0.5%(164)
British0.4%(150)
Welsh0.4%(147)
Danish0.4%(144)
Greek0.4%(139)
Norwegian0.4%(137)
Croatian0.4%(133)
Hungarian0.3%(102)
Austrian0.2%(55)
Lithuanian0.2%(55)
Russian0.1%(41)
Belgian0.1%(36)
Serbian0.1%(33)
Romanian0.1%(28)
West Indian0.1%(24)
Haitian0.1%(24)
Slovak0%(14)
Brazilian0%(11)
Ukrainian0%(10)
Finnish0%(8)
RANKED:Largest German population · Largest Irish population · Largest English population · Largest American population · Largest Italian population
Section 05

Education

Bachelor's degree or higher
38.7%
+18.3 ptssince 2000
from 20.4% in 2000
US average: 35.6%
High school or higher
96.0%
+8.8 ptssince 2000
from 87.2% in 2000
US average: 89.6%
Graduate degree
13.7%
+6.7 ptssince 2000
from 7.0% in 2000
US average: 14.0%
Section 06

Commute & transportation

Average commute
28.3 min
+34%since 2000
from 21.1 min in 2000
US average: 26.5
Drive alone to work
79.7%
−2.1 ptssince 2009
from 81.8% in 2009
US average: 68.9%
Carpooled to work
5.7%
−5.6 ptssince 2009
from 11.3% in 2009
US average: 8.5%
Public transit
0.0%
−0.8 ptssince 2009
from 0.8% in 2009
US average: 3.2%
Worked from home
12.6%
+8.2 ptssince 2009
from 4.4% in 2009
US average: 15.0%
Walked to work
1.5%
+0.1 ptssince 2009
from 1.4% in 2009
US average: 2.4%
Biked to work
0.0%
−0.1 ptssince 2009
from 0.1% in 2009
US average: 0.4%
No vehicle available
4.0%
+1.3 ptssince 2009
from 2.7% in 2009
US average: 8.3%
Section 07

Work & employment

Unemployment rate
1.9%
−3.5 ptssince 2011
from 5.4% in 2011
US average: 5.2%
Labor force participation
68.3%
−1.0 ptssince 2011
from 69.2% in 2011
US average: 63.5%
Self-employed
12.2%
+1.5 ptssince 2009
from 10.6% in 2009
US average: 13.1%
Management & professional
46.2%
−15.1 ptssince 2009
from 61.3% in 2009
US average: 42.5%
Section 08

People & community

Male
50.2%
+0.7 ptssince 2009
from 49.5% in 2009
Female
49.8%
−0.7 ptssince 2009
from 50.5% in 2009
Foreign born
1.2%
Unchangedsince 2009
from 1.2% in 2009
US average: 14.1%
Veterans
8.7%
−40.4 ptssince 2009
from 49.0% in 2009
US average: 6.2%
With a disability
10.6%
+1.0 ptssince 2012
from 9.6% in 2012
US average: 13.3%
Uninsured
2.5%
−91.6 ptssince 2013
from 94.1% in 2013
US average: 8.4%
Broadband at home
92.7%
+12.5 ptssince 2017
from 80.2% in 2017
US average: 91.0%
English only at home
97.9%
+0.7 ptssince 2016
from 97.2% in 2016
US average: 77.7%
Spanish at home
1.3%
+0.5 ptssince 2016
from 0.7% in 2016
US average: 13.6%
Marital status
Men 15+
Never married26.1%(3,730)
Married61.4%(8,763)
Widowed3.3%(477)
Divorced9.1%(1,298)
Women 15+
Never married19.7%(2,858)
Married59.6%(8,642)
Widowed10.9%(1,582)
Divorced9.7%(1,413)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Drill deeper

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Head to head

Compare Monroe County to nearby counties

MONROE COUNTY VS
St. Clair County
Income$73,854−28%
Home value$180,300−36%
Population250,708+620%
SEE FULL COMPARISON →
MONROE COUNTY VS
Jefferson County
Income$82,851−19%
Home value$237,200−16%
Population233,132+569%
SEE FULL COMPARISON →
MONROE COUNTY VS
Randolph County
Income$68,131−34%
Home value$135,100−52%
Population29,921−14%
SEE FULL COMPARISON →
MONROE COUNTY VS
St. Louis
Income$56,160−45%
Home value$197,500−30%
Population278,144+698%
SEE FULL COMPARISON →
Frequently asked

How many people live in Monroe County, Illinois?

Monroe County, Illinois has about 35,036 residents according to the 2024 American Community Survey.

What is the median household income in Monroe County, Illinois?

The typical household in Monroe County, Illinois earns about $102,880 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 $282,100, and the typical rent is about $1,042 a month.

How educated are people in Monroe County, Illinois?

About 38.7% 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 5.0% 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 12,614 residents, a change of about 56 percent over that period.

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Explore from here

7 census tracts
Census Tract 6004.01Census Tract 6005.01Census Tract 6001.04Census Tract 6004.02Census Tract 6001.02Census Tract 6001.03Census Tract 6005.02
8 ZIP codes
ZIP 62298ZIP 62236ZIP 62278ZIP 62295ZIP 62244ZIP 62248ZIP 62279ZIP 62256
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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

How we source and harmonize this data →

Monroe County, Illinois: demographics, income & housing data · CensusEasy