Which is city is the county seat of a county with a standard abbreviation of SU?
Sumner County, Kansas Sumner County (standard abbreviation: SU) is a county located in the U.S. state of Kansas. As of the 2010 census, the population was 24,132. Its county seat is Wellington.
Saline County, Kansas Saline County (standard abbreviation: SA) is a county located in the U.S. state of Kansas. As of the 2010 census, the county population was 55,606. The largest city and county seat is Salina.