There are 1 US Post Offices in Wichita County serving a total of 1,962 residents equating to 1,962 residents per post office. It's estimated that approximately 3,132 packages are handled across the 1 county post offices annually. Wichita County (standard abbreviation: WH) is a county located in the U.S. state of Kansas. As of the 2010 census, the county population was 2,234. Its county seat is Leoti."