ZIP Code 16603 is located in Altoona Pennsylvania. 16603 is entirely within Blair County. Regionally, 16603 is located in the Johnstown-Altoona Area.
| ZIP Code Name | Altoona |
| Primary County | Blair County |
| ZIP Code Type | PO Box |
| Current Time | EST |
| Coordinates | 40.51535034,-78.40145874 |
| Adjacent ZIP Codes | |
| Region | Johnstown-Altoona Area |
| Metropolitan/Micropolitan Stat Area | Altoona, PA |
| Time Zone | Eastern Standard Time |
| IANA Timezone | America/New_York |