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O Fallon Post Office Hours

Retail Hours

Contact Numbers:

Phone: 618-632-4691
Monday-Friday 8:30am - 7:00pm
Saturday 9:00am - 4:00pm
Sunday Closed

Bulk Mail Acceptance Hours

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

Monday-Thursday 8:30am - 7:00pm
Friday 8:30am - 3:00pm
Saturday-Sunday Closed

Lobby Hours

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

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

Last Collection Times

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Mark Mcgeehan (Postmaster) mark.j.mcgeehan@usps.gov
1111 S Lincoln Ave
O Fallon, IL 62269

The O Fallon Post Office is located in the state of Illinois within St Clair County. This location serves 31,348 O Fallon residents with a median income of $77,963. It's estimated that approximately 50,035 packages pass through this post office each year.

O Fallon Post Office Location 62269

O Fallon Illinois Local Links

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