ZIP Code 15664 is located in Mammoth Pennsylvania. 15664 is entirely within Westmoreland County. Regionally, it is located in Metro Pittsburgh.
| ZIP Code Name | Mammoth |
| Primary County | Westmoreland County |
| ZIP Code Type | PO Box |
| Current Time | EDT |
| Coordinates | 40.15103149,-79.54026794 |
| Adjacent ZIP Codes | |
| Region | Metro Pittsburgh |
| Metropolitan/Micropolitan Stat Area | Pittsburgh, PA |
| Time Zone | Eastern Daylight Time |
| IANA Timezone | America/New_York |