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ZIP Code 62323

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
38.0600, -105.4400
Timezone
America/Chicago
Est. Population
215,000
Country
United States (US)
View 62323 on Interactive Map → All ZIP Codes in O'Fallon