ZIP Code 16103 is located in New Castle Pennsylvania. 16103 is entirely within Lawrence County. Regionally, 16103 is located in the Youngstown Area.
| ZIP Code Name | New Castle |
| Primary County | Lawrence County |
| ZIP Code Type | PO Box |
| Current Time | EDT |
| Coordinates | 41.00033951,-80.34576416 |
| Adjacent ZIP Codes | |
| Region | Youngstown Area |
| Metropolitan/Micropolitan Stat Area | New Castle, PA |
| Time Zone | Eastern Daylight Time |
| IANA Timezone | America/New_York |
| US Congressional Districts in 16103 | |
| Pennsylvania State Senate Districts in 16103 | |
| Pennsylvania State House of Representatives Districts in 16103 |