Butler County, Kansas

Butler County (county code BU) is a county in the southern part of the U.S. state of Kansas. In 2010, 65,880 people lived there. Its county seat is El Dorado. El Dorado is also the biggest city in Butler County.
Geography.
The U.S. Census Bureau says that the county has an area of . Of that, is land and (1.2%) is water. It is the biggest county by size in Kansas.
Major highways.
Sources: National Atlas, U.S. Census Bureau
People.
Butler County is part of the Wichita, KS Metropolitan Statistical Area.