15 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 16601 | Altoona | 33,426 |
| 16602 | Altoona | 27,014 |
| 16648 | Hollidaysburg | 14,722 |
| 16686 | Tyrone | 13,000 |
| 16635 | Duncansville | 12,115 |
| 16662 | Martinsburg | 5,866 |
| 16673 | Roaring Spring | 5,066 |
| 16693 | Williamsburg | 4,015 |
| 16625 | Claysburg | 3,551 |
| 16617 | Bellwood | 2,505 |
| 16637 | East Freedom | 2,236 |
| 16665 | Newry | 274 |
| 16682 | Sproul | 240 |
| 16684 | Tipton | 93 |
| 16631 | Curryville | 64 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 15 ZCTAs in Blair County, Pennsylvania (US Census).