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CITY

O'Fallon

Missouri · 96,101 residents (2025 est.) · 30.5 sq mi
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The short version

O'Fallon is a city of 93,801 people in Missouri. Since 2000 the city has more than doubled, up 47,632 people. Households here earn about 56% more than in Missouri as a whole. Few US cities rank higher on income. Owners hold 81% of the housing stock. There are 3,073 people per square mile.

At a glance
Wealthier
median household income $110,443, above the US median
US median: $82,259
Mid-age
median age 38.4
US median: 38.9
More educated
43% hold a bachelor's degree
US average: 36%
Less affordable
home values up 35%, inflation adjusted
US median home: $376,019
Unique to this place

What stands out about O'Fallon

What changed most since 1990

  • Population18,698 → 93,801 (+402%)US over the same years: +35%
  • Adults with a bachelor's degree12.4% → 43.3% (+30.9 pts)US over the same years: +15.3 pts
  • Median age28.8 → 38.4 (+9.6 years)US over the same years: +6.0 years

Among the 304 cities and towns in the St. Louis metro

  • 52nd in household income$110,443
  • 65th in share with a bachelor's degree43.3%
  • 45th in home value$326,200
  • 74th in diversity score44.7

Its weight in St. Charles County

O'Fallon's population equals 23% of St. Charles County's. Its number of foreign-born residents equals 32% of the county's.

Section 01

Population & growth

Total population
93,801
+103%since 2000
from 46,169 in 2000
96,101 in 2025 (Census Bureau estimate)
1990 – 2025
Population density
3,073 / sq mi
+103%since 2000
from 1,512 / sq mi in 2000
US average: 281
Median age
38.4
+23%since 2000
from 31.1 in 2000
US average: 38.9
Land area
30.5 sq mi
Population, 1990 – 2024
11K34K56K79K101K19902000201020202024O'Fallon
202494K
1990201020202024
Age distribution, 2024
Under 56.1%(5,758)
US avg: 5.6%
5 to 96.5%(6,104)
US avg: 6%
10 to 146.8%(6,353)
US avg: 6.4%
15 to 196.9%(6,464)
US avg: 6.6%
20 to 244.8%(4,486)
US avg: 6.5%
25 to 3413.8%(12,933)
US avg: 13.7%
35 to 4414.3%(13,436)
US avg: 13.2%
45 to 5414.2%(13,296)
US avg: 12.2%
55 to 6412.2%(11,402)
US avg: 12.7%
65 to 748.7%(8,181)
US avg: 10.2%
75 to 844.1%(3,882)
US avg: 5.1%
85 and over1.6%(1,506)
US avg: 1.9%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02

Income & economy

Median household income
$110,443
+1%inflation adjusted, since 2000
from $60,179 in 2000
US average: $82,259
1990 – 2024
Per capita income
$49,304
+126%since 2000
from $21,774 in 2000
US average: $44,673
Households earning $100K+
68.3%
+16.9 ptssince 2009
from 51.4% in 2009
US average: 53.3%
Poverty rate
5.4%
+2.1 ptssince 2000
from 3.3% in 2000
US average: 12.5%
Income inequality (Gini)
0.380
+13%since 2010
from 0.337 in 2010
US average: 0.476
Workforce by industry, 2024
Retail trade11.8%
US avg: 9.9%
Other services11.4%
US avg: 6.7%
Information11.2%
US avg: 10.8%
Public administration9.6%
US avg: 4.8%
Wholesale trade7.2%
US avg: 6.9%
Finance & insurance4.3%
US avg: 5.9%
Professional, scientific, technical3.6%
US avg: 5.1%
Transportation & warehousing2.5%
US avg: 2.2%
Arts, entertainment, food1.7%
US avg: 1.9%
Agriculture, forestry, fishing0.8%
US avg: 1.6%
Education & health services0.7%
US avg: 0.9%
Construction0.5%
US avg: 1.2%
Manufacturing0.3%
US avg: 0.4%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 03

Housing

Median home value
$326,200
+35%inflation adjusted, since 2000
from $132,800 in 2000
US average: $376,019
1990 – 2024
Median gross rent
$1,443
+29%inflation adjusted, since 2000
from $615 in 2000
US average: $1,442
Owner-occupied
81.0%
−8.5 ptssince 2000
from 89.5% in 2000
19.0% rent
Vacancy rate
2.0%
−2.5 ptssince 2009
from 4.6% in 2009
US average: 10.0%
Persons per household
2.63 people
−7%since 2009
from 2.83 people in 2009
US average: 2.54
Owner cost-burdened
16.2%
−8.1 ptssince 2009
from 24.3% in 2009
US average: 22.9%
Renter cost-burdened
39.8%
+3.0 ptssince 2009
from 36.7% in 2009
US average: 47.4%
Afford Score
3.0
+12%since 2009
from 2.6 in 2009
1990 – 2024
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
Gentrification Score
47
Our index, 0 to 100. Higher means faster recent growth in incomes, home values, and college degrees.
Section 04

Race & ethnicity

2000
White, non-Hispanic94.4%(43,576)
Black2.2%(1,029)
Hispanic / Latino1.5%(671)
Asian0.7%(340)
Other0%
2024
White, non-Hispanic79.5%(74,564)
Black5.2%(4,908)
Hispanic / Latino5.5%(5,200)
Asian4.8%(4,526)
Other4.9%(4,603)
Diversity Score
45
+85%since 2009
from 24 in 2009
1990 – 2024
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
Section 04 · Origins

Detailed origins & ancestry

Hispanic origin
Mexican2.9%(2,759)
Colombian0.5%(467)
Guatemalan0.2%(224)
Peruvian0.2%(202)
Honduran0.2%(193)
Puerto Rican0.1%(137)
Argentine0.1%(96)
Cuban0.1%(87)
Panamanian0.1%(75)
Ecuadorian0.1%(71)
+ 5 more hispanic origin groups with data
Venezuelan0.1%(47)
Spaniard0%(45)
Dominican0%(31)
Bolivian0%(25)
Asian origin
Asian Indian2.4%(2,285)
Vietnamese1%(910)
Chinese0.5%(477)
Filipino0.3%(252)
Pakistani0.2%(223)
Korean0.2%(161)
Thai0.1%(99)
Bangladeshi0.1%(71)
Nepalese0%(17)
Hmong0%(15)
Pacific Islander origin
Samoan0.1%(86)
Ancestry
German28.4%(26,662)
Irish15.4%(14,432)
English11.5%(10,808)
Italian6.9%(6,466)
American5.3%(4,999)
Polish3.4%(3,185)
French3.2%(2,988)
Scottish2.3%(2,153)
Dutch1%(982)
Swedish0.7%(620)
Scotch-Irish0.7%(616)
Arab0.6%(567)
+ 39 more ancestry groups with data
Norwegian0.5%(503)
Croatian0.4%(371)
British0.3%(313)
Russian0.3%(297)
Welsh0.3%(288)
Palestinian0.3%(273)
Lebanese0.3%(264)
Greek0.2%(225)
Swiss0.2%(188)
Czech0.2%(168)
Hungarian0.2%(161)
Austrian0.2%(153)
West Indian0.2%(152)
Jamaican0.2%(146)
Ukrainian0.2%(144)
Danish0.1%(132)
Brazilian0.1%(128)
Finnish0.1%(128)
Nigerian0.1%(109)
Portuguese0.1%(88)
Slovak0.1%(74)
Iranian0.1%(62)
Belgian0.1%(56)
Turkish0.1%(54)
Bulgarian0%(46)
Serbian0%(43)
Canadian0%(42)
Romanian0%(41)
Latvian0%(19)
Ghanaian0%(18)
Slovene0%(17)
Armenian0%(12)
Somali0%(12)
Section 05

Education

Bachelor's degree or higher
43.3%
+16.1 ptssince 2000
from 27.2% in 2000
US average: 35.6%
High school or higher
95.4%
+5.0 ptssince 2000
from 90.4% in 2000
US average: 89.6%
Graduate degree
15.6%
+8.6 ptssince 2000
from 7.0% in 2000
US average: 14.0%
Section 06

Commute & transportation

Average commute
25.5 min
+30%since 2000
from 19.6 min in 2000
US average: 26.5
Drive alone to work
75.2%
−13.1 ptssince 2009
from 88.3% in 2009
US average: 68.9%
Carpooled to work
4.3%
−2.8 ptssince 2009
from 7.1% in 2009
US average: 8.5%
Public transit
0.1%
−0.1 ptssince 2009
from 0.1% in 2009
US average: 3.2%
Worked from home
18.1%
+14.6 ptssince 2009
from 3.5% in 2009
US average: 15.0%
Walked to work
0.8%
+0.6 ptssince 2009
from 0.3% 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
4.7%
+3.0 ptssince 2009
from 1.7% in 2009
US average: 8.3%
Section 07

Work & employment

Unemployment rate
2.7%
−2.8 ptssince 2011
from 5.4% in 2011
US average: 5.2%
Labor force participation
73.1%
−4.2 ptssince 2011
from 77.3% in 2011
US average: 63.5%
Women 20-64 in the labor force
83.2%
+3.5 ptssince 2020
from 79.7% in 2020
US average: 74.6%
Self-employed
10.5%
Unchangedsince 2009
from 10.5% in 2009
US average: 13.1%
Management & professional
50.5%
+8.8 ptssince 2009
from 41.8% in 2009
US average: 42.5%
Section 08

People & community

Male
48.8%
−0.2 ptssince 2009
from 49.0% in 2009
Female
51.2%
+0.2 ptssince 2009
from 51.0% in 2009
Foreign born
6.3%
+2.7 ptssince 2009
from 3.6% in 2009
US average: 14.1%
Veterans
6.0%
−3.9 ptssince 2009
from 9.9% in 2009
US average: 6.2%
With a disability
10.6%
+2.0 ptssince 2012
from 8.6% in 2012
US average: 13.3%
Uninsured
3.9%
−2.5 ptssince 2013
from 6.4% in 2013
US average: 8.4%
Broadband at home
94.9%
+5.7 ptssince 2017
from 89.2% in 2017
US average: 91.0%
Computer in household
97.4%
+0.9 ptssince 2020
from 96.5% in 2020
US average: 95.5%
Same house as last year
90.6%
−0.9 ptssince 2020
from 91.5% in 2020
US average: 87.7%
English only at home
92.1%
−1.2 ptssince 2016
from 93.3% in 2016
US average: 77.7%
Spanish at home
2.5%
+0.4 ptssince 2016
from 2.1% in 2016
US average: 13.6%
Marital status
Men 15+
Never married29.1%(10,595)
Married60.2%(21,937)
Widowed1.9%(683)
Divorced8.9%(3,232)
Women 15+
Never married25%(9,791)
Married54.4%(21,297)
Widowed7.5%(2,954)
Divorced13%(5,097)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Section 09

Health coverage

Uninsured
3.9%
−2.5 ptssince 2013
from 6.4% in 2013
US average: 8.4%
Employer-based
75.2%
−3.3 ptssince 2020
from 78.5% in 2020
US average: 54.8%
Direct-purchase
10.8%
−0.3 ptssince 2020
from 11.1% in 2020
US average: 13.8%
Medicare
15.1%
+1.8 ptssince 2020
from 13.3% in 2020
US average: 18.4%
Medicaid
7.0%
+2.6 ptssince 2020
from 4.4% in 2020
US average: 20.9%
VA health care
1.6%
+0.2 ptssince 2020
from 1.4% in 2020
US average: 2.2%
Any private
83.7%
−3.4 ptssince 2020
from 87.1% in 2020
US average: 67.1%
Any public
21.7%
+4.6 ptssince 2020
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)
US avg: 26.4%
Gulf War (1990s)22.9%(973)
US avg: 24.3%
Vietnam era36.2%(1,540)
US avg: 33.1%
Korean War3.7%(157)
US avg: 4.5%
World War II1.8%(76)
US avg: 1%

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
Over time

O'Fallon, decade by decade

O'Fallon population, inflation-adjusted income and home value, education, and diversity by year
YearPopulationMedian household incomeMedian home valueBachelor's degree+Diversity score
199018,698$87,715$168,72512.4%8.5
200046,169$109,625$241,91627.2%13.5
201079,329$110,538$297,35337.8%27.3
202091,316$112,111$285,07242.8%41.4
202493,801$110,443$326,20043.3%44.7

Census years come from the decennial census and the latest year from the American Community Survey, so part of any change between those two rows can reflect the different surveys. Dollar figures are adjusted for inflation to 2024 dollars; a figure ending in "+" was at the Census Bureau's reporting cap that year. The diversity score runs from 0 to 100; see how it's calculated.

Drill deeper

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Head to head

Compare O'Fallon to nearby cities

O'FALLON VS
Dardenne Prairie
Income$152,500+38%
Home value$432,000+32%
Population15,032−84%
SEE FULL COMPARISON →
O'FALLON VS
Lake St. Louis
Income$125,693+14%
Home value$405,900+24%
Population19,129−80%
SEE FULL COMPARISON →
O'FALLON VS
St. Peters
Income$91,637−17%
Home value$269,900−17%
Population61,479−36%
SEE FULL COMPARISON →
O'FALLON VS
Wentzville
Income$112,394+2%
Home value$331,300+2%
Population49,495−48%
SEE FULL COMPARISON →
Frequently asked

How many people live in O'Fallon, Missouri?

O'Fallon, Missouri has about 93,801 residents according to the 2024 American Community Survey.

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

The typical household in O'Fallon, Missouri earns about $110,443 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 $326,200, and the typical rent is about $1,443 a month.

How educated are people in O'Fallon, Missouri?

About 43.3% 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 5.4% 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 75,103 residents, a change of about 402 percent over that period.

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

How we source and harmonize this data →