ZIP Codes in Pleasanton, CA
Pleasanton uses 2 ZIP codes, all in Alameda County. Pick one below for details, or look up the full nine-digit ZIP+4 for a specific street address.
All 2 Pleasanton ZIP codes
| ZIP | Type | County | Population |
|---|---|---|---|
| 94566 | standard | Alameda | 44,222 |
| 94588 | standard | Alameda | 34,328 |
Finding a ZIP+4 in Pleasanton
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 Pleasanton street almost always have different ZIP+4 codes even though they share all five leading digits.
Appending ZIP+4 to a mailing list?
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