There are 10 US Post Offices in Newton County serving a total of 7,490 residents equating to 749 residents per post office. It's estimated that approximately 11,955 packages are handled across the 10 county post offices annually. Newton County is a county located in the U.S. state of Arkansas. As of the 2010 census, the population was 8,330. The county seat is Jasper. Newton County is Arkansas's 46th county, formed on December 14, 1842, and named for Thomas W. Newton, an Arkansas Congressman. It is an alcohol prohibition or dry county. Newton County is part of the Harrison , AR Micropolitan Statistical Area."