Butler County, Pennsylvania

Butler County
Location within the U.S. state of Pennsylvania
Pennsylvania's location within the U.S.
Coordinates: 40°55′N 79°55′W / 40.91°N 79.91°W / 40.91; -79.91
Country United States
State Pennsylvania
FoundedMarch 12, 1800
Named afterRichard Butler
SeatButler
Largest townshipCranberry Township
Area
  Total
795 sq mi (2,060 km2)
  Land789 sq mi (2,040 km2)
  Water6.1 sq mi (16 km2)  0.8%
Population
 (2020)
  Total
193,763
  Density246/sq mi (95/km2)
Time zoneUTC−5 (Eastern)
  Summer (DST)UTC−4 (EDT)
Congressional district16th
Websitewww.co.butler.pa.us
DesignatedJune 11, 1982

Butler County is a county in the Commonwealth of Pennsylvania. As of the 2020 census, the population was 193,763. Its county seat is Butler. Butler County was created on March 12, 1800, from part of Allegheny County and named in honor of General Richard Butler, a hero of the American Revolution. The county is part of the Greater Pittsburgh region of the commonwealth.