There are 8 US Post Offices in Kershaw County serving a total of 89,573 residents equating to 11,197 residents per post office. It's estimated that approximately 142,969 packages are handled across the 8 county post offices annually. Kershaw County is a county located in the U.S. state of South Carolina. As of the 2010 census, its population was 61,697. Its county seat is Camden. The county was created in 1791. Kershaw County is part of the Columbia, SC Metropolitan Statistical Area."