📍 View location on OpenStreetMap (37.734410, -122.090560)
| Data Metric | Local Statistic |
|---|---|
| Postal / Zip Code | 94546 |
| Primary City | Castro Valley |
| State / Province | CA |
| County | Alameda |
| Total Population | 44,855 |
| Population Density | 1,085.3 people/sq mi |
| Timezone | America/Los_Angeles |
| Metric | ZIP 94546 | Alameda County records | CA records |
|---|---|---|---|
| Population estimate | 44,855 | 1,668,635 (sum) | 39,286,245 (sum) |
| Population Density | 1,085.3 /sq mi | -- | -- |
| County population rank | #13 of 49 | -- | -- |
| State population rank | #305 of 1,762 | -- | -- |
Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.
| ZIP Code | City | Distance | Population estimate |
|---|---|---|---|
| ZIP 94578 | San Leandro | 2.7 mi | 41,769 |
| ZIP 94605 | Oakland | 3.7 mi | 44,103 |
| ZIP 94541 | Hayward | 4.2 mi | 67,139 |
| ZIP 94577 | San Leandro | 4.3 mi | 46,317 |
| ZIP 94580 | San Lorenzo | 4.5 mi | 29,420 |
Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →