ZIP Codes in Livermore, CA
Livermore 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 Livermore ZIP codes
| ZIP | Type | County | Population |
|---|---|---|---|
| 94550 | standard | Alameda | 49,873 |
| 94551 | standard | Alameda | 37,885 |
Finding a ZIP+4 in Livermore
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 Livermore 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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