Westmoreland County, Pennsylvania
Westmoreland County, Pennsylvania | |
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Flag Seal Logo | |
Location within the U.S. state of Pennsylvania | |
| Coordinates: 40°19′N 79°28′W / 40.31°N 79.47°W | |
| Country | United States |
| State | Pennsylvania |
| Founded | February 26, 1773 |
| Named after | Westmorland |
| Seat | Greensburg |
| Largest city | Hempfield Township |
| Area | |
• Total | 1,036 sq mi (2,680 km2) |
| • Land | 1,028 sq mi (2,660 km2) |
| • Water | 8.5 sq mi (22 km2) 0.8% |
| Population (2020) | |
• Total | 354,663 |
• Estimate (2024) | 350,935 |
| • Density | 345/sq mi (133/km2) |
| Time zone | UTC−5 (Eastern) |
| • Summer (DST) | UTC−4 (EDT) |
| Congressional districts | 12th, 14th |
| Website | www |
Westmoreland County is a county in the state of Pennsylvania, United States, in the Pittsburgh Metropolitan Statistical Area. As of the 2020 census, the population was 354,663. The county seat is Greensburg and the most populous community is Hempfield Township. It is named after Westmorland, a historic county of England. The county is part of the Southwest Pennsylvania region of the state.