There are 8 US Post Offices in Newton County serving a total of 10,843 residents equating to 1,355 residents per post office. It's estimated that approximately 17,307 packages are handled across the 8 county post offices annually. Newton County is a county located in the U.S. state of Indiana. As of 2010, the population was 14,244. This county is part of Northwest Indiana as well as the Chicago metropolitan area. The county seat is Kentland. The county is divided into 10 townships which provide local services."