Home > CA > Alameda County > Castro Valley > Zip 94552

Zip Code 94552 — Castro Valley, CA

94552 is a ZIP Code associated with Castro Valley, CA, located within Alameda. The postal region supports an estimated population of 14,506 residents across Data Pending housing units, with a population density of 108.1 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (37.704560, -122.013590)

Data MetricLocal Statistic
Postal / Zip Code94552
Primary CityCastro Valley
State / ProvinceCA
CountyAlameda
Total Population14,506
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density108.1 people/sq mi
TimezoneAmerica/Los_Angeles

How 94552 Compares

MetricZIP 94552Alameda CountyCA State Average
Population14,5061,668,63539,286,245
Median IncomeData PendingN/AN/A
Population Density108.1 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 94542Hayward3.5 mi14,871N/A
Zip 94541Hayward4.5 mi67,139N/A
Zip 94546Castro Valley4.7 mi44,855N/A
Zip 94583San Ramon4.8 mi39,583N/A
Zip 94544Hayward5.4 mi76,947N/A

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 →