ZIP Code 94528 is located in the county of Contra Costa in the state of California. 94528 ZIP Code is spread between the coordinates of +37.8389099 Latitude and -121.95769591 Longitude. 94528 ZIP Code is part of the area code. There is 1 postal office in zip code 94528.
On the below highlighted section you can find the cities which the US Post Office accepts for ZIP code 94528. Always when you mail a package or a letter, be attentive to mention the preferred or acceptable cities. Using any city in the list of unacceptable cities may result in unforseen delays.