Zip Code 15670 — New Alexandria, PA
15670 is a ZIP Code associated with New Alexandria, PA, located within Westmoreland. 15670 ranks #20 out of 77 ZIP codes in Westmoreland County by population (and #733 out of 1,832 in PA). The area supports an estimated population of 3,675 residents across Data Pending housing units, with a population density of 34.8 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (40.407830, -79.432100)
| Data Metric | Local Statistic |
|---|
| Postal / Zip Code | 15670 |
| Primary City | New Alexandria |
| State / Province | PA |
| County | Westmoreland |
| Total Population | 3,675 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 34.8 people/sq mi |
| Timezone | America/New_York |
How 15670 Compares
| Metric | ZIP 15670 | Westmoreland County | PA State Average |
|---|
| Population | 3,675 | 362,427 (Total) | 13,018,637 (Total) |
| Average ZIP Income | Data Pending | N/A | N/A |
| Population Density | 34.8 /sq mi | -- | -- |
| County Pop Rank | #20 of 77 | -- | -- |
Nearby ZIP Codes
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 →