Smithfield, Pennsylvania ZIP Codes
- ZIP records
1 - Sum of listed ZIP population estimates
5,560 - Counties represented
1 - Population range
5,560–5,560 per ZIP
Population sum includes positive estimates in these ZIP records; it is not an official city population.
Top ZIP Codes by Population
| Rank | ZIP Code | City | County | Population estimate |
|---|---|---|---|---|
| 1 | 15478 | Smithfield | Fayette | 5,560 |
Counties represented
All ZIP Codes in Smithfield
Browse all ZIP data for Pennsylvania
Methodology: ZIP records are grouped by the source file's primary city and state fields. Population ranges and sums use positive ZIP-level estimates; sums should not be read as official city totals. County links use each record's listed county assignment.