ZIP Code 94503 is located in the county of Napa in the state of California. 94503 ZIP Code is spread between the coordinates of +38.1669711 Latitude and -122.25313729 Longitude. 94503 ZIP Code is part of the 707 area code. There is 1 postal office in zip code 94503.
On the below highlighted section you can find the cities which the US Post Office accepts for ZIP code 94503. 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.