ZIP Code 17521 is located in Elm Pennsylvania. 17521 is entirely within Lancaster County. Regionally, 17521 is located in the Harrisburg-Lancaster-Lebanon-York Area.
| ZIP Code Name | Elm |
| Primary County | Lancaster County |
| ZIP Code Type | PO Box |
| Current Time | EST |
| Coordinates | 40.20371628,-76.34783936 |
| Adjacent ZIP Codes | |
| Region | Harrisburg-Lancaster-Lebanon-York Area |
| Metropolitan/Micropolitan Stat Area | Lancaster, PA |
| Time Zone | Eastern Standard Time |
| IANA Timezone | America/New_York |
| School Districts in 17521 |