There are 2 US Post Offices in Stevens County serving a total of 5,691 residents equating to 2,846 residents per post office. It's estimated that approximately 9,083 packages are handled across the 2 county post offices annually. Stevens County (standard abbreviation: SV) is a county located in the U.S. state of Kansas. As of the 2010 census, the county population was 5,724. Its county seat is Hugoton. The county is named for the Reconstruction era Pennsylvania politician Thaddeus Stevens."