There are 12 US Post Offices in York County serving a total of 253,371 residents equating to 21,114 residents per post office. It's estimated that approximately 404,408 packages are handled across the 12 county post offices annually. York County comprises nine municipalities: the towns of Clover, Fort Mill, Hickory Grove, McConnells, Sharon, and Smyrna; and the cities of Rock Hill, Tega Cay, and York. York County has many transportation features. I-77 runs through the eastern portion of the county and I-85 runs near the northwestern portion. The Charlotte/Douglas International Airport is less than 30 minutes away, servicing major carriers and regional airlines that offer daily flights to nearly 150 domestic and international cities. York County is part of a 16-county region with 2.3 million inhabitants spanning two states: 12 counties in North Carolina and four in South Carolina. York County is part of the Charlotte-Concord-Gastonia, NC-Rock Hill SC Metropolitan Statistical Area."