Mercer County Post Office

Find Mercer 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.


Carlton Post Office 1333 Cochranton Road Carlton PA 16311 814-425-2205


Clark Post Office 6 Charles Street Clark PA 724-962-5781

Clarks Mills Post Office 21 Lake Wilhelm Road Clarks Mills PA 16114 724-253-4040

Farrell Post Office 700 Spearman Avenue Farrell PA 16121 724-346-3611

Fredonia Post Office 161 2nd Street Fredonia PA 16124 724-475-2161

Greenville Post Office 55 Clinton Street Greenville PA 16125 724-588-5310

Grove City Post Office 117 East Pine Street Grove City PA 16127 724-458-6140

Grove City Postal Retail Str Post Office 1911 Leesburg Grove City Road Grove City PA 16127 724-748-5052

Hadley Post Office 1133 Fredonia Road Hadley PA 16130 724-253-2888

Hermitage Post Office 3386 East State Street Hermitage PA 16148 724-347-1100

Jackson Center Post Office 1163 Franklin Road Jackson Center PA 16133 724-662-4071

Jamestown Post Office 119 Liberty Street Jamestown PA 16134 724-932-5245

Mercer Post Office 109 East Venango Street Mercer PA 16137 724-662-3590

Sandy Lake Post Office 3267 South Main Street Sandy Lake PA 16145 724-376-2354

Sharon Post Office 120 Shenango Avenue Sharon PA 16146 724-347-5535

Sharpsville Post Office 108 East Shenango Street Sharpsville PA 16150 724-962-7877

Sheakleyville Post Office 3216 Perry Highway Hadley PA 16130 724-253-4332

Stoneboro Post Office 40 Linden Street Stoneboro PA 16153 724-376-3742

Transfer Post Office 3676 North Hermitage Road Greenville PA 16125 724-646-0177

West Middlesex Post Office 39 Fair Street West Middlesex PA 16159 724-528-9771

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.