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Information About O Fallon, MO

Use the interactive O Fallon, Missouri road map to explore the city.

Current Time and Weather

Below is the current time and weather for this city, click on the flag for a weather forecast.

Note: This city observes Daylight Savings Time, adjust time accordingly.

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Zipcodes in O Fallon

Below is a list of zipcodes that can be found in O Fallon, Missouri. Select a zip code to view a road map of that area of the city.