Zip Code | City | Population |
|---|---|---|
| 16601 | Altoona | 33,169 |
| 16602 | Altoona | 27,813 |
| 16648 | Hollidaysburg | 14,547 |
| 16686 | Tyrone | 13,054 |
| 16635 | Duncansville | 12,231 |
| 16662 | Martinsburg | 5,654 |
| 16673 | Roaring Spring | 5,176 |
| 16693 | Williamsburg | 4,112 |
| 16625 | Claysburg | 3,688 |
| 16617 | Bellwood | 2,615 |
| 16637 | East Freedom | 2,418 |
| 16665 | Newry | 378 |
| 16682 | Sproul | 216 |
| 16684 | Tipton | 71 |
| 16631 | Curryville | 38 |