Castro Valley, CA ZIP Codes, Coordinates & Counties
Castro Valley, California has 2 ZIP codes in Alameda county. The approximate center of Castro Valley is 37.714, -122.049. Castro Valley has about 120,591 known street addresses.
ZIP codes in Castro Valley, CA
| ZIP Code | County | Latitude | Longitude |
|---|---|---|---|
| 94546 | Alameda | 37.715 | -122.08 |
| 94552 | Alameda | 37.713 | -122.018 |
Counties Castro Valley spans
Alameda
Most common streets in Castro Valley
Center, Redwood, Palomares, Somerset, Grove, Madison, Forest, Austin, Gary, Stanton
Frequently asked questions
What ZIP codes are in Castro Valley, CA?
Castro Valley, California has 2 ZIP codes, ranging from 94546 to 94552. The full list, with each ZIP's county and coordinates, is in the table on this page.
What county is Castro Valley, CA in?
Castro Valley is in Alameda county.
What are the latitude and longitude of Castro Valley, CA?
The approximate center of Castro Valley, California is latitude 37.714, longitude -122.049. Coordinates for each ZIP code are listed in the table above.
How many ZIP codes does Castro Valley, CA have?
Castro Valley has 2 ZIP codes.
How many addresses are in Castro Valley, CA?
Castro Valley, California has about 120,591 known street addresses in the sthan.io US address database.
What are the most common streets in Castro Valley, CA?
Some of the most common street names in Castro Valley are Center, Redwood, Palomares, Somerset, Grove, Madison.
What cities are near Castro Valley, CA?
Cities near Castro Valley include Hayward (5 mi), San Lorenzo (5 mi), San Leandro (6 mi), Dublin (7 mi), San Ramon (7 mi).
Cities near Castro Valley
Hayward, CA (5 mi) San Lorenzo, CA (5 mi) San Leandro, CA (6 mi) Dublin, CA (7 mi) San Ramon, CA (7 mi) Union City, CA (8 mi) Moraga, CA (9 mi) Danville, CA (9 mi)
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View the API →Last updated: June 2026 · Data: sthan.io US address database