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.
Mason, Michigan Mason is a city in the U.S. state of Michigan. It is named after the state's first governor, Stevens T. Mason. As of the 2010 census, the city population was 8,252. It is the county seat of Ingham County. Mason is the only city in the U.S. that serves as a county seat ahead of a state capital, with the capital of Lansing also in Ingham County. Despite Mason being the county seat, many county offices and courtrooms are located in Lansing.