US Post Office, 401 Church St, O Fallon, Missouri, 63366-9998

Store Hours of Operation, Location & Phone Number for US Post Office Near You

  1. O Fallon
    401 Church St O Fallon MO 63366-9998

    Hours(Opening & Closing Times):
    Mon - Fri 8:30am - 6:00pm Sat 9:00am - 2:00pm Sun Closed

    Phone Number: (636) 272-3811

    Customer Service Email or Contact:
    http://faq.usps.com/adaptivedesktop/faq.jsp?ef=USPSFAQ&dest=EmailUs

    Correct this information

The map and information below will help you find the closest US Post Office near you. Need to know what time US Post Office in O Fallon opens or closes, or whether it's open 24 hours a day? Read below for business times, daylight and evening hours, street address, and more.

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