There are 7 US Post Offices in Panola County serving a total of 22,904 residents equating to 3,272 residents per post office. It's estimated that approximately 36,557 packages are handled across the 7 county post offices annually. Panola County is a county located in the U.S. state of Texas. As of the 2010 census, its population was 23,796. The county seat is Carthage. Located in East Texas, the name of the county is derived from a Native American word for cotton. Until 2013, Panola County was one of about 30 entirely dry counties in Texas, which means that the sale of alcohol was restricted or prohibited. In 2013, local options for alcohol sales were added to the November election ballots and passed, permitting the sale of beer and wine in stores and the sale of mixed beverages at restaurants."