There are 8 US Post Offices in Pocahontas County serving a total of 7,616 residents equating to 952 residents per post office. It's estimated that approximately 12,156 packages are handled across the 8 county post offices annually. Pocahontas County is a county located in the U.S. state of West Virginia. As of the 2010 census, the population was 8,719. Its county seat is Marlinton. The county was established in 1821 and is named after the Native American chief's daughter from Jamestown, Virginia. Pocahontas County is the home to the National Radio Astronomy Observatory Green Bank Telescope and is part of the National Radio Quiet Zone."