There are 5 US Post Offices in Ness County serving a total of 3,067 residents equating to 613 residents per post office. It's estimated that approximately 4,895 packages are handled across the 5 county post offices annually. Ness County (standard abbreviation: NS) is a county located in the U.S. state of Kansas. As of the 2010 census, the county population was 3,107. The largest city and county seat is Ness City. The county was named for Corporal Noah V. Ness of the 7th Kansas Cavalry."