There are 3 US Post Offices in Wilkes County serving a total of 11,012 residents equating to 3,671 residents per post office. It's estimated that approximately 17,576 packages are handled across the 3 county post offices annually. Wilkes County is a county located in the east central portion of the U.S. state of Georgia. As of the 2010 census, the population was 10,593. The county seat is the city of Washington. Referred to as \"Washington-Wilkes\", the county seat and county are commonly treated as a single entity by locals, including the area's historical society and the Chamber of Commerce. It is part of the Central Savannah River Area (CSRA)."