Alton Square Post Office

117 Alton Sq Alton, IL 62002
Phone: 618-463-4728

Parking: Parking Lot Available
Post Office Lobby Hours
Monday 7:00am - 9:00pm
Tuesday 7:00am - 9:00pm
Wednesday 7:00am - 9:00pm
Thursday 7:00am - 9:00pm
Friday 7:00am - 9:00pm
Saturday 7:00am - 9:00pm
Sunday 12:00pm - 6:00pm


Alton Square Post Office is a United States Postal Service (USPS) facility in Alton, IL. This post office offers a full array of services, including package delivery and first class mail.


Duck Stamps
Global Express Guranteed®
Money Orders (Domestic)
Money Orders (International)
Pickup Hold Mail
Pickup Accountable Mail
PO Boxes
Priority Mail International®

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