There are 3 US Post Offices in Saluda County serving a total of 14,951 residents equating to 4,984 residents per post office. It's estimated that approximately 23,863 packages are handled across the 3 county post offices annually. Saluda County is a county located in the U.S. state of South Carolina. As of the 2010 census, the population was 19,875. Its county seat is Saluda. The county was formed from northern and eastern portions of Edgefield County. Saluda County is part of the Augusta-Richmond County, GA-SC Metropolitan Statistical Area.