| | | 4271298 | Smith Corner CDP | Pennsylvania | Blair County | Altoona, PA 11020 | Altoona-Huntingdon, PA 107 | N |
| | | 4272988 | Spring Drive Mobile Home
Park CDP | Pennsylvania | Blair County | Altoona, PA 11020 | Altoona-Huntingdon, PA 107 | N |
| | | 4273456 | Sproul CDP | Pennsylvania | Blair County | Altoona, PA 11020 | Altoona-Huntingdon, PA 107 | N |
| | | 4275296 | Sunbrook CDP | Pennsylvania | Blair County | Altoona, PA 11020 | Altoona-Huntingdon, PA 107 | N |
| | | 4275936 | Sylvan Hills CDP | Pennsylvania | Blair County | Altoona, PA 11020 | Altoona-Huntingdon, PA 107 | N |
| | | 4276880 | Tipton CDP | Pennsylvania | Blair County | Altoona, PA 11020 | Altoona-Huntingdon, PA 107 | N |
| | | 4277808 | Tunnelhill borough | Pennsylvania | Blair County | Altoona, PA 11020 | Altoona-Huntingdon, PA 107 | N |
| | | 4278168 | Tyrone borough | Pennsylvania | Blair County | Altoona, PA 11020 | Altoona-Huntingdon, PA 107 | N |
| | | 4278186 | Tyrone Forge CDP | Pennsylvania | Blair County | Altoona, PA 11020 | Altoona-Huntingdon, PA 107 | N |
| | | 4279496 | Vail CDP | Pennsylvania | Blair County | Altoona, PA 11020 | Altoona-Huntingdon, PA 107 | N |