Butler County, Kansas

Butler County
Butler County
County
	Butler County Courthouse in El Dorado (2011)
	Location within the U.S. state of Kansas
	Kansas's location within the U.S.
	Coordinates: 37°47′N 96°50′W / 37.783°N 96.833°W
Country	United States
State	Kansas
Founded	August 25, 1855
Named for	Andrew Pickens Butler
Seat	El Dorado
Largest city	Andover
Area
• Total	1,447 sq mi (3,750 km2)
• Land	1,430 sq mi (3,700 km2)
• Water	17 sq mi (40 km2) 1.2%
Population (2020)
• Total	67,380
• Estimate (2021)	67,889
• Density	47.1/sq mi (18.2/km2)
Time zone	UTC−6 (Central)
• Summer (DST)	UTC−5 (CDT)
Area code	316
Congressional district	4th
Website	bucoks.com

Butler County is a county in the U.S. state of Kansas and is the largest county in the state by total area.^[3] Its county seat is El Dorado and its most populous city is Andover.^[4] As of the 2020 census, the county population was 67,380.^[1] The county was named for Andrew Butler, a U.S. Senator from South Carolina who coauthored the Kansas–Nebraska Act.

^ ^a ^b "QuickFacts; Butler County, Kansas; Population, Census, 2020 & 2010". United States Census Bureau. Archived from the original on August 15, 2021. Retrieved August 15, 2021.
^ "Annual Estimates of the Resident Population for Counties: April 1, 2020 to July 1, 2021". Retrieved October 18, 2022.
^ "Kansas Land Area County Rank".
^ "Find a County". National Association of Counties. Archived from the original on May 31, 2011. Retrieved June 7, 2011.