Armstrong County Post Office

Find Armstrong County Pennsylvania post offices and USPS mailing boxes. Post offices provide information on bulk mail services, domestic mail delivery, international shipping, change of address, mail forwarding, PO boxes, and passport services.


Adrian Post Office 593 Reesedale Road Adrian PA 16210 724-545-1912


Apollo Post Office 118 North Plaza Apollo PA 15613 724-478-4707

Cadogan Post Office 106 Main Street Freeport PA 16229 724-763-8610

Cowansville Post Office 827 East Brady Road Cowansville PA 16218 724-543-3232

Elderton Post Office 201 East Saltwork Street Elderton PA 15736 724-354-2096

Ford City Post Office 824 4th Avenue Ford City PA 16226 724-763-8021

Freeport Post Office 415 High Street Freeport PA 16229 724-295-2211

Kittanning Post Office 201 North McKean Street Kittanning PA 16201 724-543-1959

Leechburg Post Office 23 Main Street Leechburg PA 15656 724-845-7203

Manorville Post Office 500 Water Street Manorville PA 16238 724-763-2491

Mc Grann Post Office 207 Byron Street McGrann PA 16236 724-763-8502

North Apollo Post Office 312 North 16th Street North Apollo PA 15673 724-478-3072

Nu Mine Post Office 1409 State Route 1042 NuMine PA 16244 724-783-6698

Oak Ridge Post Office 120 Main Street Oak Ridge PA 16245 814-365-2305

Parker Post Office 208 Washington Street Parker PA 16049 724-399-2449

Sagamore Post Office 333 Post Office Road Sagamore PA 16250 724-783-6384

Schenley Post Office 105 Railroad Street Apollo PA 15613 724-295-9805

Spring Church Post Office 1759 Route 56 Spring Church PA 15686 724-478-3687

Templeton Post Office 232 3rd Street Templeton PA 16259 724-868-2711

Worthington Post Office 199 Main Street Worthington PA 16262 724-297-5738

What is a Post Office?

A post office is a local branch of the United States Postal Service, where mail is received and dispatched to individuals and businesses in a given community. A post office usually has postal clerks who receive and process mail, and it's also the place from which mail carriers pick up mail they deliver on their local routes. The office handles USPS business, including mail and package sorting, delivery and forwarding, sales of stamps and other postal supplies, change-of-address requests, and other administrative functions.

In some small communities, the local post office may be located within a commercial business. In communities both large and small, a post office may serve as a local passport office at which passport applications are received and undergo initial processing.