O'Fallon, Missouri Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of O'Fallon, Missouri is 92,697 as of the 2023 American Community Survey, making it the 7th-largest city in Missouri. The median household income is $107,203, the median home value is $305,100, and the median age is 38.2.
The population has grown 19.2% since 2010 (79,964 → 95,355).
92,697
Population
3034
People / sq mi
$107,203
Median Income
$305,100
Median Home Value
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O'Fallon covers 30.6 sq mi of land at 3034 people per square mile.
About O'Fallon, MO
The poverty rate is what most separates O'Fallon from the typical city: 2.7% of residents live below the federal poverty line, against 12.4% nationally. With 92,697 residents, O'Fallon is a city in Missouri. It is the #7-largest of all cities in Missouri nationally.
Median household income is $107,203, above the US median of $78,538. Poverty is relatively low for US cities at 2.7%, below the national 12.4%. Median home value is $305,100, with typical rent around $1,400.
42.4% of adults 25 and older hold a bachelor’s degree, above the national average of 35.0%. Remote work is above the national 14.0% at 15.7%, and the average commute runs about 26 minutes each way.
O'Fallon city Population History (2010-2024)
The city of O'Fallon city had a population of 79,964 in 2010 and 95,355 in 2024, a 19.2% growth over 14 years. The peak was 95,355 in 2024. Average annual growth rate: 1.27%.
95,355
Population (2024)
79,964
Population (2010)
95,355
Peak (2024)
1.27%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 79,964 |
| 2011 | 81,184 |
| 2012 | 82,136 |
| 2013 | 83,136 |
| 2014 | 84,221 |
| 2015 | 85,061 |
| 2016 | 86,449 |
| 2017 | 87,523 |
| 2018 | 88,364 |
| 2019 | 88,673 |
| 2020 | 91,665 |
| 2021 | 93,747 |
| 2022 | 93,753 |
| 2023 | 94,418 |
| 2024 | 95,355 |
Race & Ethnicity
| White | 82.5% |
| Black or African American | 5.1% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.0% |
| Two or More Races | 0.0% |
Economy & Income
$107,203
Median Household Income
$47,429
Per Capita Income
2.7%
Poverty Rate
1.9%
Unemployment Rate
Housing
$305,100
Median Home Value
$1,400
Median Rent
80.2%
Owner-Occupied
Education
95.5%
High School+
42.4%
Bachelor's+
Commute
0.1%
Drive Alone
77.7%
Public Transit
15.7%
Work From Home
25.6 min
Avg Commute
Community Profile
25.9%
Foreign Born
93.3%
Non-English at Home
6.2%
Veterans
10.1%
With Disability
96.0%
Health Insurance
97.1%
Internet Access
Employment by Industry
| Professional, Scientific & Management | 21.2% |
| Manufacturing | 11.8% |
| Finance, Insurance & Real Estate | 11.2% |
| Information | 10.9% |
| Education, Health Care & Social Services | 8.0% |
| Construction | 6.8% |
| Arts, Entertainment & Food Services | 5.1% |
| Retail Trade | 4.4% |
| Public Administration | 3.4% |
| Transportation & Warehousing | 1.7% |
| Agriculture & Mining | 0.7% |
Largest cities in Missouri
Largest counties in Missouri
Part of Missouri
Metro areas in Missouri
City rankings
Frequently Asked Questions
O'Fallon, Missouri has a population of 92,697 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 7th-largest city in Missouri.
The median household income in O'Fallon, Missouri is $107,203, with 2.7% of residents living below the federal poverty level.
The median home value in O'Fallon, Missouri is $305,100, with median monthly rent at $1,400 and a homeownership rate of 80.2%.
The median age in O'Fallon, Missouri is 38.2 years. The population is 49.2% male and 50.8% female.
The population has grown 19.2% since 2010 (79,964 → 95,355).
Where to stay in O'Fallon
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.