ZIP Code 17121 is located in Harrisburg Pennsylvania. 17121 is entirely within Dauphin County. Regionally, it is located in the Harrisburg-Lancaster-Lebanon-York Area.
| ZIP Code Name | Harrisburg |
| Primary County | Dauphin County |
| ZIP Code Type | Unique |
| Current Time | EDT |
| Coordinates | 40.26933670,-76.88278198 |
| Adjacent ZIP Codes | |
| Region | Harrisburg-Lancaster-Lebanon-York Area |
| Metropolitan/Micropolitan Stat Area | Harrisburg-Carlisle, PA |
| Time Zone | Eastern Daylight Time |
| IANA Timezone | America/New_York |