There are 19 US Post Offices in Chenango County serving a total of 51,023 residents equating to 2,685 residents per post office. It's estimated that approximately 81,438 packages are handled across the 19 county post offices annually. Chenango County is a county located in the south-central section U.S. state of New York. As of the 2010 census, the population was 50,477. Its county seat is Norwich. The county's name originates from an Oneida word meaning \"large bull-thistle.\""