ZIP Codes in Easton, PA
Easton uses 3 ZIP codes, all in Northampton County. Pick one below for details, or look up the full nine-digit ZIP+4 for a specific street address.
All 3 Easton ZIP codes
| ZIP | Type | County | Population |
|---|---|---|---|
| 18040 | standard | Northampton | 17,256 |
| 18042 | standard | Northampton | 45,532 |
| 18045 | standard | Northampton | 30,429 |
Finding a ZIP+4 in Easton
Knowing which of these 3 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 Easton 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 Easton addresses and download it complete.