ZIP Codes in San Tan Valley, AZ
San Tan Valley uses 2 ZIP codes, all in Pinal County. Pick one below for details, or look up the full nine-digit ZIP+4 for a specific street address.
All 2 San Tan Valley ZIP codes
| ZIP | Type | County | Population |
|---|---|---|---|
| 85140 | standard | Pinal | 51,260 |
| 85143 | standard | Pinal | 44,444 |
Finding a ZIP+4 in San Tan Valley
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 San Tan Valley 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 San Tan Valley addresses and download it complete.