Alameda County, located in the state of California, contains a range of ZIP codes that are essential for mail delivery, demographics, mapping, and regional planning. Below is a complete list of ZIP codes associated with this county.

These ZIP codes help identify specific areas and communities within the county, ranging from small towns and villages to broader rural stretches. Whether you’re moving to Alameda County, setting up a business, or analyzing demographic trends, understanding ZIP code distribution is an essential part of the process.

Zip code
94501
94560
94577
94578
94550
94611
94705
94505
94568
94551
94586
94702
94709
94662
94514
94544
94566
94608
94609
94707
94604
95035
94543
94614
94712
94540
94541
94555
94579
94612
94601
94623
94536
94552
94621
94703
95377
94708
94620
94615
94546
94588
94603
94605
94606
94704
94619
94706
94557
94539
94542
94587
94545
94607
94618
94602
94720
95391
94701
94661
94613
94502
94538
94580
94610
94710
94537
94624
94666

To know more about Alameda County, click the button below:

Alameda County Information

Use this tool to find your area details by using zip code.

ZIP Code to County

Note: Some ZIP codes may span across county borders and may be listed under more than one county. This is common in rural or low-population areas where ZIP code regions are broader.

Source: Data compiled from official county records, USPS ZIP code data, and the United States Census Bureau.

Frequently Asked Questions

How many ZIP codes are in Alameda County County?

There are approximately 69 ZIP codes in this county. Check the table above for the complete list.

Do ZIP codes in Alameda County overlap with other counties?

Yes, some ZIP codes may span more than one county. This is especially common in less populated or rural areas.