Butler County, Pennsylvania
40°55′N 79°55′W / 40.91°N 79.91°W
Butler County, Pennsylvania | |
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Flag Seal | |
Location within the U.S. state of Pennsylvania | |
| Coordinates: 40°55′N 79°55′W / 40.91°N 79.91°W | |
| Country | United States |
| State | Pennsylvania |
| Founded | March 12, 1800 |
| Named after | Richard Butler |
| Seat | Butler |
| Largest township | Cranberry Township |
| Area | |
• Total | 795 sq mi (2,060 km2) |
| • Land | 789 sq mi (2,040 km2) |
| • Water | 6.1 sq mi (16 km2) 0.8% |
| Population (2020) | |
• Total | 193,763 |
• Estimate (2024) | 199,341 |
| • Density | 246/sq mi (94.8/km2) |
| Time zone | UTC−5 (Eastern) |
| • Summer (DST) | UTC−4 (EDT) |
| Congressional district | 16th |
| Website | www |
| Designated | June 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.