ZIP Code 03866 is located in Rochester New Hampshire. 03866 is entirely within Strafford County. Regionally, it is located in the Southern New Hampshire Region.
| ZIP Code Name | Rochester |
| Primary County | Strafford County |
| ZIP Code Type | PO Box |
| Current Time | EDT |
| Coordinates | 43.30898285,-70.97396851 |
| Adjacent ZIP Codes | |
| Region | Southern New Hampshire Region |
| Metropolitan/Micropolitan Stat Area | Boston-Cambridge-Newton, MA-NH |
| Time Zone | Eastern Daylight Time |
| IANA Timezone | America/New_York |