Zip Code 16635 — Duncansville, PA
16635 is a ZIP Code associated with Duncansville, PA, located within Blair. 16635 ranks #5 out of 15 ZIP codes in Blair County by population (and #358 out of 1,832 in PA). The area supports an estimated population of 12,003 residents across Data Pending housing units, with a population density of 81.6 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (40.416210, -78.487430)
| Data Metric | Local Statistic |
|---|
| Postal / Zip Code | 16635 |
| Primary City | Duncansville |
| State / Province | PA |
| County | Blair |
| Total Population | 12,003 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 81.6 people/sq mi |
| Timezone | America/New_York |
How 16635 Compares
| Metric | ZIP 16635 | Blair County | PA State Average |
|---|
| Population | 12,003 | 123,973 (Total) | 13,018,637 (Total) |
| Average ZIP Income | Data Pending | N/A | N/A |
| Population Density | 81.6 /sq mi | -- | -- |
| County Pop Rank | #5 of 15 | -- | -- |
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 →