ZIP Codes in Hillsboro, OR
Hillsboro uses 2 ZIP codes, all in Washington County. Pick one below for details, or look up the full nine-digit ZIP+4 for a specific street address.
All 2 Hillsboro ZIP codes
| ZIP | Type | County | Population |
|---|---|---|---|
| 97123 | standard | Washington | 48,410 |
| 97124 | standard | Washington | 54,357 |
Finding a ZIP+4 in Hillsboro
Knowing which of these 2 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 Hillsboro 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 Hillsboro addresses and download it complete.