Alameda County, California ZIP Codes
- ZIP records
49 - Cities represented
17 - Sum of listed ZIP population estimates
1,668,635
Population sum includes positive estimates in these ZIP records; it is not an official county population.
Top ZIP Codes by Population
| Rank | ZIP Code | City | Population estimate |
|---|---|---|---|
| 1 | 94544 | Hayward | 76,947 |
| 2 | 94568 | Dublin | 70,803 |
| 3 | 94536 | Fremont | 70,619 |
| 4 | 94538 | Fremont | 67,781 |
| 5 | 94587 | Union City | 67,464 |
| 6 | 94541 | Hayward | 67,139 |
| 7 | 94501 | Alameda | 63,808 |
| 8 | 94601 | Oakland | 53,259 |
| 9 | 94539 | Fremont | 52,396 |
| 10 | 94550 | Livermore | 49,873 |
Cities in Alameda County
- Alameda
- Albany
- Berkeley
- Castro Valley
- Dublin
- Emeryville
- Fremont
- Hayward
- Livermore
- Newark
- Oakland
- Pleasanton
- San Leandro
- San Lorenzo
- Sunol
- Tracy
- Union City
ZIP Directory
- ZIP 94501
- ZIP 94502
- ZIP 94536
- ZIP 94538
- ZIP 94539
- ZIP 94541
- ZIP 94542
- ZIP 94544
- ZIP 94545
- ZIP 94546
- ZIP 94550
- ZIP 94551
- ZIP 94552
- ZIP 94555
- ZIP 94560
- ZIP 94566
- ZIP 94568
- ZIP 94577
- ZIP 94578
- ZIP 94579
- ZIP 94580
- ZIP 94586
- ZIP 94587
- ZIP 94588
- ZIP 94601
- ZIP 94602
- ZIP 94603
- ZIP 94605
- ZIP 94606
- ZIP 94607
- ZIP 94608
- ZIP 94609
- ZIP 94610
- ZIP 94611
- ZIP 94612
- ZIP 94613
- ZIP 94618
- ZIP 94619
- ZIP 94621
- ZIP 94702
- ZIP 94703
- ZIP 94704
- ZIP 94705
- ZIP 94706
- ZIP 94707
- ZIP 94709
- ZIP 94710
- ZIP 94720
- ZIP 95391
Browse all ZIP data for California
Methodology: Records are grouped by the source file's listed county and state. Population sums add positive ZIP-level estimates and are not official county totals; city counts use distinct city labels in the source.