Which is city is the county seat of a county with a standard abbreviation of SU?
Wellington, Kansas Wellington is a city in and the county seat of Sumner County, Kansas, United States. As of the 2010 census, the city population was 8,172.
Waupaca, Wisconsin Waupaca is a city in and the county seat of Waupaca County in the state of Wisconsin, United States. The population was 6,069 at the 2010 census. The city is believed to be named after Sam Waupaca (or Chief Wapuka) of the Potowatomi tribe.