Zip Code 15421 — Chalk Hill, PA
15421 is a ZIP Code associated with Chalk Hill, PA, located within Fayette. 15421 ranks #44 out of 58 ZIP codes in Fayette County by population (and #1576 out of 1,832 in PA). The area supports an estimated population of 207 residents across Data Pending housing units, with a population density of 298.2 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (39.845270, -79.597430)
| Data Metric | Local Statistic |
|---|
| Postal / Zip Code | 15421 |
| Primary City | Chalk Hill |
| State / Province | PA |
| County | Fayette |
| Total Population | 207 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 298.2 people/sq mi |
| Timezone | America/New_York |
How 15421 Compares
| Metric | ZIP 15421 | Fayette County | PA State Average |
|---|
| Population | 207 | 112,816 (Total) | 13,018,637 (Total) |
| Average ZIP Income | Data Pending | N/A | N/A |
| Population Density | 298.2 /sq mi | -- | -- |
| County Pop Rank | #44 of 58 | -- | -- |
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 →