Callao Post Office Contact Information

Address, Phone Number, and Hours for an Post Office in Callao, Missouri.

Name Callao Post Office
Address 109 Market Street, Callao MO 63534 Map
Phone (660) 768-5612
Website
Hours

Map of Callao Post Office

About Callao Post Office

The Callao Post Office, located in Callao, MO, is a branch location of the United States Postal Service (USPS) that serves the Callao community. The customer service postal facility offers mail and package delivery services, P.O. box services, and passport services. The USPS operates as an independent agency within the federal government, supported entirely by revenues generated through its operations.

Interested parties may contact Post Office for questions about:

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