There are 10 US Post Offices in Jackson County serving a total of 29,825 residents equating to 2,983 residents per post office. It's estimated that approximately 47,604 packages are handled across the 10 county post offices annually. Jackson County is a county located in the U.S. state of West Virginia. As of the 2010 census, the population was 29,211. Its county seat is Ripley, and its largest municipality is Ravenswood. The county was formed in 1831 from parts of Kanawha, Wood, and Mason Counties, and named for Andrew Jackson, seventh President of the United States."