USPS in Alton
Find all USPS locations in Alton, Illinois. Hours, services, phone numbers and directions for every USPS post office and drop-off point in Alton.
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Alton Post Office
2350 Homer M Adams Pkwy , Alton , IL 62002, Alton, IL 62002
Today: Closed
(618) 462-2501
Alton Square Post Office
117 Alton Sq , Alton , IL 62002, Alton, IL 62002
Today: Closed
(618) 463-4728
Upper Alton Post Office
1624 Main St , Alton , IL 62002, Alton, IL 62002
Today: Closed
(618) 462-6014
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