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.
Keweenaw County, Michigan Keweenaw County is a county in the Upper Peninsula of the U.S. state of Michigan, the state's northernmost county. As of the 2010 census, the population was 2,156, making it Michigan's least populous county. It is also the state's largest county by total area (including waters of Lake Superior). The county seat is Eagle River.