ZIP Code 06503 is located in New Haven Connecticut. 06503 is entirely within New Haven County. Regionally, 06503 is located in the Hartford-New Haven Area.
| ZIP Code Name | New Haven |
| Primary County | New Haven County |
| ZIP Code Type | PO Box |
| Current Time | EST |
| Coordinates | 41.30499649,-72.92333221 |
| Adjacent ZIP Codes | |
| Region | Hartford-New Haven Area |
| Metropolitan/Micropolitan Stat Area | New Haven-Milford, CT |
| Time Zone | Eastern Standard Time |
| IANA Timezone | America/New_York |