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.
Sibley County, Minnesota Sibley County is a county in the U.S. state of Minnesota. As of the 2010 census, the population was 15,226. Its county seat is Gaylord. Sibley County is part of the Minneapolis-St. Paul-Bloomington, MN-WI Metropolitan Statistical Area.