ZIP codes
2
O'Fallon, MO Demographics & ZIP Codes
O'Fallon, Missouri demographics and median household income by ZIP code (in St. Charles County) — 2 ZIP codes — population 100,311 — median income $108,524 — avg. home value $305,800. Compare income, housing, and population across ZIP codes on US5.
Population
100,311
Median household income (avg.)
$108,524
144% of U.S. median
Average home value
$305,800
88% of U.S. median
Average rent
$1,159
100% of U.S. median
Median age (avg.)
38.7
O'Fallon demographics
O'Fallon, Missouri covers 2 ZIP codes primarily in St. Charles County, with a combined ZIP-area population of about 100,311.
Across ZIP codes with age data, the average median age is about 38.7 years.
Median household income in O'Fallon
The average median household income across ZIP codes in O'Fallon, Missouri is about $108,524 — about 66% above the MO ZIP average ($65,505), and about 44% above the U.S. median ($75,149).
Among ZIPs with income data, 63368 is near the top at about $118,811, while 63366 is near the bottom at about $98,237.
Housing in O'Fallon
For housing in O'Fallon, Missouri, the average median home value is about $305,800 and the average median rent is about $1,159.
The most populous ZIP in this set is 63366 (about 54,449 residents). Use the table below to compare population, income, and home values across codes.
ZIP codes in O'Fallon
Sort by population, income, or home value. Click a column header to toggle ascending / descending.
| ZIP | City | County | State | Population ↓ | Income | Home value |
|---|---|---|---|---|---|---|
| 63366 | O'Fallon | St. Charles County | MO | 54,449 | $98,237 | $283,900 |
| 63368 | O'Fallon | St. Charles County | MO | 45,862 | $118,811 | $327,700 |
Frequently asked questions
What are the demographics of O'Fallon?
O'Fallon, Missouri has a combined ZIP-area population of about 100,311 across 2 ZIP codes (primarily St. Charles County). Browse the ZIP table below for population, income, and housing by code.
What is the median household income in O'Fallon?
The average median household income across ZIP codes in O'Fallon, Missouri is about $108,524, about 66% above the state ZIP average ($65,505), and about 44% above the U.S. median ($75,149). Average median home value is about $305,800. Among ZIPs with data, 63368 is near the top ($118,811) and 63366 is near the bottom ($98,237).
How many ZIP codes are in O'Fallon?
O'Fallon, Missouri includes 2 ZIP codes on US5. Each row links to demographics, median income, and housing for that code.
Where can I find ZIP code demographics for O'Fallon?
This page lists ZIP codes in O'Fallon, Missouri with population, median household income, and home value. Select a ZIP for a full demographics profile.