Butler County

Also known as Butler County, Kansas, Butler County, KS

county in Kansas, United States

Key facts

Country: United States
State: Kansas
Founded: August 25, 1855
Named after: Andrew Pickens Butler
Seat: El Dorado
Largest city: Andover
Total: 1,447 sq mi (3,750 km )
Land: 1,430 sq mi (3,700 km )
Water: 17 sq mi (44 km ) 1.2%
Estimate 2025: 69,484
Density: 47.1/sq mi (18.2/km )
Time zone: UTC−6 ( Central )
Summer dst: UTC−5 ( CDT )

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Article

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

History