header> Open Interactive Map

ZIP Code 62278

O'Fallon, St. Clair County, Illinois (IL) • Standard Postal Code

IL
City
O'Fallon
County
St. Clair County
State / Territory
Illinois
Area Code
(224)
Coordinates
37.1600, -106.3400
Timezone
America/Chicago
Est. Population
57,500
Country
United States (US)
View 62278 on Interactive Map → All ZIP Codes in O'Fallon