ZIP Code 94546 – Castro Valley, California | ZipsCode.us
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ZIP Code 94546
Castro Valley, California · Alameda
ZIP code 94546 belongs to the city of Castro Valley in California (Alameda). See all California ZIP Codes.
ZIP code 94546 belongs to Castro Valley, California, in Alameda. If you are mailing a letter or package to this area, use Castro Valley, CA 94546 in the address. On this page you will find the city and county for 94546, nearby ZIP codes in the same county, and free tools to look up any address in this ZIP code.
What City Is ZIP Code 94546?
The city for ZIP code 94546 is Castro Valley, California. When you write an address in this area, the correct format is: Name, Street Address, Castro Valley, CA 94546.
ZIP Code 94546 County and State
ZIP code 94546 is located in Alameda, California. For a complete list of cities and ZIP codes across the state, see the California ZIP Codes page.
Nearby ZIP Codes in Alameda
These ZIP codes are in the same county as 94546:
ZIP Code 94546 on the Map
The map below shows the approximate center of ZIP code 94546, near Castro Valley, California. You can zoom in and drag the map to explore the area.
Map center is approximate (ZIP area center, around 37.7015, -122.0782). Map data © OpenStreetMap.
Population and Demographics of ZIP Code 94546
According to public U.S. Census Bureau data, ZIP code 94546 is home to a community in California. The figures below come from the U.S. Census and the American Community Survey (ACS).
Source: U.S. Census Bureau, American Community Survey (ACS) 2023 5-year estimates and 2023 Gazetteer. Figures are estimates and change with each new survey.
Find an Address in ZIP Code 94546
Need the full ZIP+4 code for a specific street address in Castro Valley? Use the free ZIP+4 Lookup tool, or find any ZIP code from a street address with the ZIP Code by Address tool.
Frequently Asked Questions
What city is ZIP code 94546?
ZIP code 94546 is for Castro Valley, California.
What county is ZIP code 94546 in?
ZIP code 94546 is in Alameda, California.
What state is ZIP code 94546 in?
ZIP code 94546 is in California (CA).
How do I find the ZIP+4 for an address in 94546?
Use the free ZIP+4 Lookup tool with the full street address to get the complete 9-digit ZIP code.
What are the nearby ZIP codes to 94546?
Nearby ZIP codes include 94501 (Alameda), 94502 (Alameda), 94536 (Fremont), 94537 (Fremont), 94538 (Fremont).
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