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CITY · 2010 ACS

Monmouth

Illinois · 9,444 residents · 4.242 sq mi
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The short version

Monmouth has notably lower household income than the US average, with a median household income of $34,403. Population has declined 4% since 2000. 17% of adults hold a bachelor's degree or higher, below the national rate of 28%. Median home value is $74,700. At a median age of 33.1, residents skew younger than the country as a whole. Households here earn about 38% less than the Illinois median.

At a glance
Lower income
below the US median
US median: $52,703
Younger
median age 33.1
US median: 37.2
Less educated
17% 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

Total population
9,444
−4%since 2000
from 9,841 in 2000
1990 – 2025
Population density
2,226 / sq mi
−4%since 2000
from 2,320 / sq mi in 2000
US average: 261
Median age
33.1
−2%since 2000
from 33.8 in 2000
US average: 37.2
Population, 1990 – 2024
8K9K9K10K10K1990201020202024Monmouth
20249K
1990201020202024
Section 02

Income & economy

Median household income
$34,403
−19%inflation adjusted, since 2000
from $33,641 in 2000
US average: $52,703
1990 – 2024
Per capita income
$17,263
+9%since 2000
from $15,839 in 2000
US average: $27,286
Households earning $100K+
16.5%
+1.0 ptssince 2009
from 15.5% in 2009
US average: 33.3%
Poverty rate
18.6%
+7.5 ptssince 2000
from 11.1% in 2000
US average: 13.8%
Income inequality (Gini)
0.423
US average: 0.461
Workforce by industry, 2010
Retail trade17.1%
US avg: 10.9%
Information9.1%
US avg: 11.5%
Finance & insurance6.8%
US avg: 5.1%
Professional, scientific, technical6.8%
US avg: 4.2%
Wholesale trade4.9%
US avg: 7.2%
Transportation & warehousing4.1%
US avg: 3.1%
Agriculture, forestry, fishing1.6%
US avg: 1.9%
Construction1.4%
US avg: 1.4%
Other services1.2%
US avg: 7%
Public administration1.1%
US avg: 4.9%
Arts, entertainment, food0.6%
US avg: 2.4%
Manufacturing0.3%
US avg: 0.5%
Education & health services0%
US avg: 0.9%
BARS: THIS PLACE · TICKS: US AVERAGE
Section 03

Housing

Median home value
$74,700
+16%inflation adjusted, since 2000
from $51,000 in 2000
US average: $225,659
1990 – 2024
Median gross rent
$544
+18%inflation adjusted, since 2000
from $364 in 2000
US average: $853
Owner-occupied
38.0%
−32.1 ptssince 2000
from 70.2% in 2000
33.5% rent
Vacancy rate
9.0%
−0.8 ptssince 2009
from 9.8% in 2009
US average: 12.1%
Owner cost-burdened
25.7%
+3.6 ptssince 2009
from 22.1% in 2009
US average: 30.9%
Renter cost-burdened
46.8%
−4.8 ptssince 2009
from 51.5% in 2009
US average: 46.8%
Afford Score
2.2
+43%since 2000
from 1.5 in 2000
1990 – 2024
RELATED:See current rent listings in Monmouth on RentDataNow
Section 04

Race & ethnicity

2000
White, non-Hispanic90.8%(8,940)
Black2.8%(274)
Hispanic / Latino4.3%(428)
Asian0.4%(44)
Other0%
Diversity Score18.2%(1,788)
2010
White, non-Hispanic80.2%(7,576)
Black2.7%(258)
Hispanic / Latino14.4%(1,358)
Asian0.7%(65)
Other2.7%(254)
Diversity Score43%(4,057)
Diversity Score
43
+136%since 2000
from 18 in 2000
1990 – 2024
Section 05

Education

Bachelor's degree or higher
17.4%
−0.2 ptssince 2000
from 17.6% in 2000
US average: 27.9%
High school or higher
81.4%
+3.3 ptssince 2000
from 78.1% in 2000
US average: 84.9%
Graduate degree
6.1%
+0.4 ptssince 2000
from 5.7% in 2000
US average: 10.2%
Section 06

Commute & transportation

Average commute
14.2 min
+24%since 2000
from 11.4 min in 2000
US average: 25.2
Drive alone to work
73.9%
+0.8 ptssince 2009
from 73.1% in 2009
US average: 76.2%
Carpooled to work
8.5%
−1.8 ptssince 2009
from 10.3% in 2009
US average: 10.4%
Public transit
0.3%
−0.1 ptssince 2009
from 0.4% in 2009
US average: 4.7%
Worked from home
5.0%
+0.7 ptssince 2009
from 4.3% in 2009
US average: 4.1%
Walked to work
10.8%
+0.6 ptssince 2009
from 10.3% in 2009
US average: 2.8%
Biked to work
0.9%
−0.1 ptssince 2009
from 0.9% in 2009
US average: 0.5%
No vehicle available
4.5%
−1.3 ptssince 2009
from 5.8% in 2009
US average: 8.7%
Section 07

Work & employment

Self-employed
13.5%
+0.5 ptssince 2009
from 13.0% in 2009
US average: 12.9%
Management & professional
21.5%
−38.4 ptssince 2009
from 59.9% in 2009
US average: 35.2%
Section 08

People & community

Male
47.7%
+2.4 ptssince 2009
from 45.3% in 2009
Female
52.3%
−2.4 ptssince 2009
from 54.7% in 2009
Foreign born
6.3%
+2.4 ptssince 2009
from 3.9% in 2009
US average: 12.8%
Veterans
7.1%
−36.2 ptssince 2009
from 43.2% in 2009
US average: 9.9%
Drill deeper

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Compare Monmouth to nearby cities

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MONMOUTH VS
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MONMOUTH VS
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MONMOUTH VS
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Frequently asked

How many people live in Monmouth, Illinois?

Monmouth, Illinois has about 9,444 residents according to the 2010 American Community Survey.

What is the median household income in Monmouth, Illinois?

The typical household in Monmouth, Illinois earns about $34,403 a year. Half of households make more than that, and half make less.

Is Monmouth, Illinois expensive?

In Monmouth, Illinois, the median home is worth about $74,700, and the typical rent is about $544 a month.

How educated are people in Monmouth, Illinois?

About 17.4% of adults age 25 and over in Monmouth, Illinois hold a bachelor's degree or higher.

What is the poverty rate in Monmouth, Illinois?

About 18.6% of people in Monmouth, Illinois live below the federal poverty line.

Has Monmouth, Illinois grown since 1990?

Yes, Monmouth, Illinois has shrunk since 1990. The population has lost about 45 residents, a change of about -0 percent over that period.

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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

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