ZIP Codes in Lancaster, PA
Lancaster uses 4 ZIP codes, all in Lancaster County. Pick one below for details, or look up the full nine-digit ZIP+4 for a specific street address.
All 4 Lancaster ZIP codes
| ZIP | Type | County | Population |
|---|---|---|---|
| 17601 | standard | Lancaster | 56,382 |
| 17602 | standard | Lancaster | 52,217 |
| 17603 | standard | Lancaster | 67,571 |
| 17606 | standard | Lancaster | 404 |
Finding a ZIP+4 in Lancaster
Knowing which of these 4 ZIP codes covers an address only gets you partway. The four-digit extension identifies the specific delivery point — typically one side of one block. Two houses facing each other on the same Lancaster street almost always have different ZIP+4 codes even though they share all five leading digits.
Appending ZIP+4 to a mailing list?
Upload a CSV of Lancaster addresses and download it complete.