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CITY · 2010 ACS

O'Fallon

Illinois · 28,281 residents · 15.791 sq mi
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The short version

O'Fallon is significantly wealthier than the US average, with a median household income of $72,831. Population has grown 29% since 2000. 45% of adults hold a bachelor's degree or higher, well above the national rate of 28%. Median home value has risen by half since 2000, reaching $190,600. Households here earn about 31% more than the Illinois median.

At a glance
Wealthier
above the US median
US median: $52,703
Mid-age
median age 36.4
US median: 37.2
More educated
45% hold a bachelor's degree
US average: 28%
Less affordable
home values up 35%, inflation adjusted
US median home: $225,659
Section 01

Population & growth

Total population
28,281
+29%since 2000
from 21,910 in 2000
1990 – 2025
Population density
1,791 / sq mi
+29%since 2000
from 1,387 / sq mi in 2000
US average: 261
Median age
36.4
+3%since 2000
from 35.3 in 2000
US average: 37.2
Population, 1990 – 2024
14K19K24K29K34K1990201020202024O'Fallon
202432K
1990201020202024
Section 02

Income & economy

Median household income
$72,831
+3%inflation adjusted, since 2000
from $55,927 in 2000
US average: $52,703
1990 – 2024
Per capita income
$32,463
+31%since 2000
from $24,821 in 2000
US average: $27,286
Households earning $100K+
48.2%
+2.2 ptssince 2009
from 46.0% in 2009
US average: 33.3%
Poverty rate
7.4%
+2.5 ptssince 2000
from 5.0% in 2000
US average: 13.8%
Income inequality (Gini)
0.393
US average: 0.461
Workforce by industry, 2010
Information12.9%
US avg: 11.5%
Other services8.3%
US avg: 7%
Public administration6.6%
US avg: 4.9%
Retail trade6.3%
US avg: 10.9%
Finance & insurance5.3%
US avg: 5.1%
Professional, scientific, technical4.5%
US avg: 4.2%
Wholesale trade2.8%
US avg: 7.2%
Arts, entertainment, food2%
US avg: 2.4%
Transportation & warehousing1.2%
US avg: 3.1%
Education & health services0.8%
US avg: 0.9%
Agriculture, forestry, fishing0%
US avg: 1.9%
Construction0%
US avg: 1.4%
Manufacturing0%
US avg: 0.5%
BARS: THIS PLACE · TICKS: US AVERAGE
Section 03

Housing

Median home value
$190,600
+35%inflation adjusted, since 2000
from $111,800 in 2000
US average: $225,659
1990 – 2024
Median gross rent
$911
+9%inflation adjusted, since 2000
from $660 in 2000
US average: $853
Owner-occupied
56.9%
−11.8 ptssince 2000
from 68.7% in 2000
30.0% rent
Vacancy rate
5.0%
−0.2 ptssince 2009
from 5.3% in 2009
US average: 12.1%
Owner cost-burdened
20.0%
−1.2 ptssince 2009
from 21.2% in 2009
US average: 30.9%
Renter cost-burdened
42.3%
+6.2 ptssince 2009
from 36.1% in 2009
US average: 46.8%
Afford Score
2.6
+31%since 2000
from 2.0 in 2000
1990 – 2024
RELATED:See current rent listings in O'Fallon on RentDataNow
Section 04

Race & ethnicity

2000
White, non-Hispanic81.4%(17,831)
Black11.9%(2,603)
Hispanic / Latino2.2%(488)
Asian2.4%(535)
Other0%
Diversity Score36.7%(8,040)
2010
White, non-Hispanic75.2%(21,279)
Black15.5%(4,372)
Hispanic / Latino3.5%(982)
Asian2.7%(772)
Other3.2%(892)
Diversity Score51%(14,413)
Diversity Score
51
+39%since 2000
from 37 in 2000
1990 – 2024
Section 05

Education

Bachelor's degree or higher
44.9%
+6.1 ptssince 2000
from 38.7% in 2000
US average: 27.9%
High school or higher
95.1%
+2.8 ptssince 2000
from 92.3% in 2000
US average: 84.9%
Graduate degree
19.4%
+2.4 ptssince 2000
from 17.0% in 2000
US average: 10.2%
Section 06

Commute & transportation

Average commute
22.0 min
+43%since 2000
from 15.4 min in 2000
US average: 25.2
Drive alone to work
86.6%
−0.4 ptssince 2009
from 87.1% in 2009
US average: 76.2%
Carpooled to work
6.9%
Unchangedsince 2009
from 6.9% in 2009
US average: 10.4%
Public transit
1.3%
Unchangedsince 2009
from 1.2% in 2009
US average: 4.7%
Worked from home
2.8%
−0.5 ptssince 2009
from 3.4% in 2009
US average: 4.1%
Walked to work
1.4%
+0.3 ptssince 2009
from 1.0% in 2009
US average: 2.8%
Biked to work
0.2%
Unchangedsince 2009
from 0.1% in 2009
US average: 0.5%
No vehicle available
6.0%
+1.4 ptssince 2009
from 4.7% in 2009
US average: 8.7%
Section 07

Work & employment

Self-employed
10.3%
−0.2 ptssince 2009
from 10.5% in 2009
US average: 12.9%
Management & professional
44.7%
−27.0 ptssince 2009
from 71.7% in 2009
US average: 35.2%
Section 08

People & community

Male
48.8%
−0.6 ptssince 2009
from 49.4% in 2009
Female
51.2%
+0.6 ptssince 2009
from 50.6% in 2009
Foreign born
4.3%
+0.3 ptssince 2009
from 4.0% in 2009
US average: 12.8%
Veterans
23.1%
−23.0 ptssince 2009
from 46.1% in 2009
US average: 9.9%
Drill deeper

Places similar to O'Fallon

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Pop 32,070
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Pop 33,067
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Pop 33,283
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Head to head

Compare O'Fallon to nearby cities

O'FALLON VS
Shiloh
Income$99,573+37%
Home value$274,000+44%
Population14,604−55%
SEE FULL COMPARISON →
O'FALLON VS
Fairview Heights
Income$80,930+11%
Home value$177,700−7%
Population16,175−50%
SEE FULL COMPARISON →
O'FALLON VS
Swansea
Income$91,587+26%
Home value$223,600+17%
Population14,356−56%
SEE FULL COMPARISON →
O'FALLON VS
Belleville
Income$63,535−13%
Home value$141,300−26%
Population40,237+23%
SEE FULL COMPARISON →
Frequently asked

How many people live in O'Fallon, Illinois?

O'Fallon, Illinois has about 28,281 residents according to the 2010 American Community Survey.

What is the median household income in O'Fallon, Illinois?

The typical household in O'Fallon, Illinois earns about $72,831 a year. Half of households make more than that, and half make less.

Is O'Fallon, Illinois expensive?

In O'Fallon, Illinois, the median home is worth about $190,600, and the typical rent is about $911 a month.

How educated are people in O'Fallon, Illinois?

About 44.9% of adults age 25 and over in O'Fallon, Illinois hold a bachelor's degree or higher.

What is the poverty rate in O'Fallon, Illinois?

About 7.4% of people in O'Fallon, Illinois live below the federal poverty line.

Has O'Fallon, Illinois grown since 1990?

Yes, O'Fallon, Illinois has grown since 1990. The population has added about 12,208 residents, a change of about 76 percent over that period.

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

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