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CITY · 2000 CENSUS

O'Fallon

Missouri · 46,169 residents · 30.525 sq mi
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The short version

O'Fallon is significantly wealthier than the US average, with a median household income of $60,179. The city has more than doubled in size since 1990, adding 27,471 residents. Median home value has more than doubled since 1990, reaching $132,800. At a median age of 31.1, residents skew younger than the country as a whole. Poverty is rare here, at 3.3% of residents. Households here earn about 59% more than the Missouri median.

At a glance
Wealthier
above the US median
US median: $42,589
Younger
median age 31.1
US median: 35.2
More educated
27% hold a bachelor's degree
US average: 24%
Less affordable
home values up 43%, inflation adjusted
US median home: $120,530
Section 01

Population & growth

46,169
+147%since 1990
from 18,698 in 1990
1990 – 2025
1,512 / sq mi
+147%since 1990
from 613 / sq mi in 1990
US average: 242
31.1
+8%since 1990
from 28.8 in 1990
US average: 35.2
Population, 19902024
11K34K56K79K101K1990201020202024O'Fallon
202494K
1990201020202024
Section 02

Income & economy

$60,179
+25%inflation adjusted, since 1990
from $36,547 in 1990
US average: $42,589
1990 – 2024
$21,774
+63%since 1990
from $13,336 in 1990
US average: $21,522
3.3%
−1.7 ptssince 1990
from 5.1% in 1990
US average: 12.4%
Section 03

Housing

$132,800
+43%inflation adjusted, since 1990
from $70,300 in 1990
US average: $120,530
1990 – 2024
$615
−2%inflation adjusted, since 1990
from $475 in 1990
US average: $602
89.5%
+13.4 ptssince 1990
from 76.2% in 1990
10.5% rent
2.2
+15%since 1990
from 1.9 in 1990
1990 – 2024
RELATED:See current rent listings in O'Fallon on RentDataNow
Section 04

Race & ethnicity

1990
White, non-Hispanic97.6%(18,240)
Black1.1%(206)
Hispanic / Latino1.4%(270)
Asian0.5%(90)
Diversity Score9.4%(1,750)
2000
White, non-Hispanic94.4%(43,576)
Black2.2%(1,029)
Hispanic / Latino1.5%(671)
Asian0.7%(340)
Diversity Score10.8%(5,001)
11
+16%since 1990
from 9 in 1990
1990 – 2024
Section 05

Education

27.2%
+14.8 ptssince 1990
from 12.4% in 1990
US average: 24.4%
High school or higher
90.4%
+10.8 ptssince 1990
from 79.7% in 1990
US average: 80.3%
7.0%
+3.5 ptssince 1990
from 3.5% in 1990
US average: 8.8%
Section 06

Commute & transportation

19.6 min
−16%since 1990
from 23.4 min in 1990
US average: 17.6
Section 07

Work & employment

No data for the years selected.

Section 08

People & community

No data for the years selected.

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Frequently asked

How many people live in O'Fallon, Missouri?

O'Fallon, Missouri has about 46,169 residents according to the 2000 Census.

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

The typical household in O'Fallon, Missouri earns about $60,179 a year. Half of households make more than that, and half make less.

Is O'Fallon, Missouri expensive?

In O'Fallon, Missouri, the median home is worth about $132,800, and the typical rent is about $615 a month.

How educated are people in O'Fallon, Missouri?

About 27.2% of adults age 25 and over in O'Fallon, Missouri hold a bachelor's degree or higher.

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

About 3.3% of people in O'Fallon, Missouri live below the federal poverty line.

Has O'Fallon, Missouri grown since 1990?

Yes, O'Fallon, Missouri has grown since 1990. The population has added about 27,471 residents, a change of about 147 percent over that period.

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

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