Zip Code 94566 — Pleasanton, CA
94566 is a ZIP Code associated with Pleasanton, CA, located within Alameda. The postal region supports an estimated population of 44,222 residents across Data Pending housing units, with a population density of 840.2 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (37.650320, -121.858810)
| Data Metric | Local Statistic |
| Postal / Zip Code | 94566 |
| Primary City | Pleasanton |
| State / Province | CA |
| County | Alameda |
| Total Population | 44,222 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 840.2 people/sq mi |
| Timezone | America/Los_Angeles |
How 94566 Compares
| Metric | ZIP 94566 | Alameda County | CA State Average |
| Population | 44,222 | 1,668,635 | 39,286,245 |
| Median Income | Data Pending | N/A | N/A |
| Population Density | 840.2 /sq mi | -- | -- |
Nearby ZIP Codes
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 →