O FALLON POST OFFICE 63366

O Fallon Post Office Hours


Retail Hours

Contact Numbers:

Phone: 636-272-3811
Monday-Friday 8:30am - 6:00pm
Saturday 9:00am - 2:00pm
Sunday Closed

Bulk Mail Acceptance Hours

Monday-Friday 9:00am - 12:30pm, 1:30pm - 4:00pm
Saturday-Sunday Closed

Monday-Friday 8:30am - 6:00pm
Saturday 9:00am - 2:00pm
Sunday Closed

Lobby Hours

Monday-Sunday 12:01am - 11:59pm

Monday-Sunday 12:01am - 11:59pm

Last Collection Times

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Michael A Miles (Postmaster) michael.a.miles@usps.gov
401 Church St
O Fallon, MO 63366

The O Fallon Post Office is located in the state of Missouri within St Charles County. This location serves 46,175 O Fallon residents with a median income of $67,310. It's estimated that approximately 73,700 packages pass through this post office each year.

O Fallon Post Office Location


O Fallon Missouri Local Links