Contra Costa County post codes
Codes
52About Contra Costa County
Contra Costa County is in California (CA), United States. It covers 30 places and 52 post codes in the 5 digits format.
This page contains 52 post code records. Every post code on this page maps to a single place.
Nearby counties include Alameda County, Solano County, City and County of San Francisco County. Other counties in California (CA) include Alameda County, Alpine County, Amador County.
Addresses in Contra Costa County usually include the place, county, state, post code, and country; confirm the local order before mailing.
At a glance
Address example
Postal formats vary by country; these are the address elements.
Shared post codes
Every post code on this page maps to a single place.
Location
FAQ
How many places are in Contra Costa County?
30
How many post codes are in Contra Costa County?
52
Which state is Contra Costa County in?
California (CA)
What is the post code format?
5 digits