| Name | Westmoreland County |
| State | Pennsylvania |
| FIPS Code | 42129 |
| County Seat | Greensburg |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2024) | 351,420 |
| Population Growth Rate(2020-2024) | -0.92% |
| Majority Ethnicity | White 94.85% |
| Public School Majority Ethnicity | White 86% |
| Partisan Voting Index | Republican:+15 |
| Unemployment Rate (May 2026) | 4.8% |
| Sales Tax Rate (2025) | 6% |
| Area Code(s) | 724 / 878 / 412 / 878 / 582 / 814 |
| Race/Ethnicity | Percentage of Population (2023) |
|---|---|
| White | 94.85% |
| African American | 2.57% |
| Hispanic | 1.57% |
| Asian | 0.94% |
| Native American | 0.05% |
| Hawaiin/Pacific Islander | 0.02% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 86.32% |
| African American | 4.31% |
| Hispanic | 1.99% |
| Asian | 1.36% |
| Native American | 0.08% |
| Hawaiin/Pacific Islander | 0.06% |