📍 View location on OpenStreetMap (40.320450, -79.721190)
| Data Metric | Local Statistic |
|---|---|
| Postal / Zip Code | 15642 |
| Primary City | Irwin |
| State / Province | PA |
| County | Westmoreland |
| Total Population | 46,325 |
| Population Density | 388.5 people/sq mi |
| Timezone | America/New_York |
| Metric | ZIP 15642 | Westmoreland County records | PA records |
|---|---|---|---|
| Population estimate | 46,325 | 362,427 (sum) | 13,018,637 (sum) |
| Population Density | 388.5 /sq mi | -- | -- |
| County population rank | #2 of 77 | -- | -- |
| State population rank | #28 of 1,811 | -- | -- |
Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.
| ZIP Code | City | Distance | Population estimate |
|---|---|---|---|
| ZIP 15647 | Larimer | 1.5 mi | 49 |
| ZIP 15692 | Westmoreland City | 2.4 mi | 992 |
| ZIP 15678 | Rillton | 2.5 mi | 472 |
| ZIP 15691 | Wendel | 2.6 mi | 302 |
| ZIP 15615 | Ardara | 2.9 mi | 148 |
Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →