Zip Code 18920 — Erwinna, PA
18920 is a ZIP Code associated with Erwinna, PA, located within Bucks. 18920 ranks #39 out of 48 ZIP codes in Bucks County by population (and #1405 out of 1,832 in PA). The area supports an estimated population of 393 residents across Data Pending housing units, with a population density of 39.3 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (40.492640, -75.090670)
| Data Metric | Local Statistic |
|---|
| Postal / Zip Code | 18920 |
| Primary City | Erwinna |
| State / Province | PA |
| County | Bucks |
| Total Population | 393 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 39.3 people/sq mi |
| Timezone | America/New_York |
How 18920 Compares
| Metric | ZIP 18920 | Bucks County | PA State Average |
|---|
| Population | 393 | 634,655 (Total) | 13,018,637 (Total) |
| Average ZIP Income | Data Pending | N/A | N/A |
| Population Density | 39.3 /sq mi | -- | -- |
| County Pop Rank | #39 of 48 | -- | -- |
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 →