United States › Missouri › O'Fallon CITY · 2000 CENSUS
O'Fallon Missouri · 46,169 residents · 30.5 sq mi
Time machine
COMPARE TO 1990 Census 2009 ACS 2010 ACS 2011 ACS 2012 ACS 2013 ACS 2014 ACS 2015 ACS 2016 ACS 2017 ACS 2018 ACS 2019 ACS 2020 ACS 2021 ACS 2022 ACS 2023 ACS 2024 ACS
The short version
O'Fallon is a city of 46,169 people in Missouri. Since 1990 the city has more than doubled, up 27,471 people. 90% of homes are owner-occupied. That is roughly 59% ahead of the Missouri median. The median age is 31.1, younger than the US median of 35.2. The poverty rate is 3.3%, under the national 12.4%.
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 from 28.8 in 1990
US average: 35.2
Population, 1990 – 2024
11K 34K 56K 79K 101K 1990 2000 2010 2020 2024 O'Fallon Age distribution, 2000
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02
Income & economy $60,179
+25%inflation adjusted, since 1990
from $36,547 in 1990
US average: $42,589
from $13,336 in 1990
US average: $21,522
from 5.1% in 1990
US average: 12.4%
$132,800
+43%inflation adjusted, since 1990
from $70,300 in 1990
US average: $120,530
$615
−2%inflation adjusted, since 1990
from $475 in 1990
US average: $602
from 76.2% in 1990
10.5% rent
Section 04
Race & ethnicity 1990
White, non-Hispanic 97.6%(18,240)
Hispanic / Latino 1.4%(270)
2000
White, non-Hispanic 94.4%(43,576)
Hispanic / Latino 1.5%(671)
No data for the years selected.
Section 04 · Origins
Detailed origins & ancestry Detailed origin tables are available for 2024; showing 2024 data.
Hispanic origin
+ 5 more hispanic origin groups with data Ancestry
+ 39 more ancestry groups with data from 12.4% in 1990
US average: 24.4%
High school or higher
from 79.7% in 1990
US average: 80.3%
from 3.5% in 1990
US average: 8.8%
Section 06
Commute & transportation 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.
Marital status
Women 15+
Never married 17.2%(2,868)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2000
Section 09
Health coverage Showing 2024 (the nearest year with coverage data).
from 6.4% in 2013
US average: 8.4%
from 78.5% in 2020
US average: 54.8%
Direct-purchase
from 11.1% in 2020
US average: 13.8%
from 13.3% in 2020
US average: 18.4%
from 4.4% in 2020
US average: 20.9%
VA health care
from 1.4% in 2020
US average: 2.2%
Any private
from 87.1% in 2020
US average: 67.1%
Any public
from 17.1% in 2020
US average: 36.7%
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, 2024
Gulf War (2001 or later) 16.2%(689)
Gulf War (1990s) 22.9%(973)
Share of the 4,257 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.
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Drill deeper
Places similar to O'Fallon Head to head
Compare O'Fallon to nearby cities O'FALLON VS
Dardenne Prairie
Income $152,500 +153%
Home value $432,000 +225%
Population 15,032 −84%
SEE FULL COMPARISON →
O'FALLON VS
Lake St. Louis
Income $125,693 +109%
Home value $405,900 +206%
Population 19,129 −80%
SEE FULL COMPARISON →
O'FALLON VS
St. Peters
Income $91,637 +52%
Home value $269,900 +103%
Population 61,479 −36%
SEE FULL COMPARISON →
O'FALLON VS
Wentzville
Income $112,394 +87%
Home value $331,300 +149%
Population 49,495 −48%
SEE FULL COMPARISON →
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.
Keep going
Explore from here 