O'Fallon, MO
Population 92,697 · Missouri
About O'Fallon, MO
O'Fallon is a mid-sized city in Missouri with a population of 92,697 residents. The median household income is $107,203 per year, which is above the national average. The median age in O'Fallon is 38.2 years.
Housing in O'Fallon has a median home value of $305,100 and median monthly rent of $1,400. Of the 35,553 total housing units, the majority are owner-occupied, with 27,855 owner-occupied and 6,894 renter-occupied units.
The unemployment rate in O'Fallon is 2.7% and the poverty rate is 4.7%. 42.4% of residents hold a bachelor's degree or higher. The average commute time is 25.6 minutes.
How O'Fallon Ranks in Missouri
Cost of Living in O'Fallon, MO
Compared to national averages, O'Fallon has a median household income of $107,203 (43% above the national median of $75,149). Home values average $305,100, which is 25% above the national median. Monthly rent at $1,400 is 20% above the US average of $1,163. Within Missouri, O'Fallon's income is 76% above the state average of $61,047, and home values are 102% above the state median of $150,786.
Why Live in O'Fallon, MO?
O'Fallon offers a strong local economy with a median household income of $107,203, well above the national average, and a strong job market with an unemployment rate of just 2.7%, and a well-educated community where 42.4% of residents hold a bachelor’s degree or higher. Additionally, the city features a low poverty rate of 4.7%, better than the national average.
O'Fallon has a population of 92,697 with a median age of 38.2 years. Compare O'Fallon with other cities to see how it stacks up, or explore all cities in Missouri.
Similar Cities Near O'Fallon
Cities in Missouri with a similar population size.
| City | Population | Median Income | Home Value | |
|---|---|---|---|---|
| Lee's Summit | 102,583 | $104,989 | $313,200 | Compare |
| St. Joseph | 71,542 | $55,578 | $144,200 | Compare |
| St. Charles | 71,048 | $85,522 | $280,800 | Compare |
| Independence | 121,944 | $59,480 | $166,400 | Compare |
| Blue Springs | 59,416 | $84,075 | $241,500 | Compare |
| St. Peters | 58,200 | $89,827 | $252,800 | Compare |
| Columbia | 127,200 | $64,488 | $268,300 | Compare |
| Joplin | 52,218 | $51,154 | $159,700 | Compare |
Demographics
Racial & Ethnic Composition
Economy & Education
Housing
Other Cities in Missouri
Data source: US Census Bureau ACS 5-Year Estimates. Last updated: 2026-04-05.
Compare O'Fallon With Other Cities
Frequently Asked Questions about O'Fallon
What is the population of O'Fallon, MO?
The population of O'Fallon, MO is 92,697 according to the latest Census data.
What is the median household income in O'Fallon?
The median household income in O'Fallon, MO is $107,203 per year.
What is the median home value in O'Fallon?
The median home value in O'Fallon, MO is $305,100.
What is the average rent in O'Fallon?
The median monthly rent in O'Fallon, MO is $1,400.
What is the unemployment rate in O'Fallon?
The unemployment rate in O'Fallon, MO is 2.7%.