San Mateo County post codes
Codes
38About San Mateo County
San Mateo County is in California (CA), United States. It covers 24 places and 38 post codes in the 5 digits format.
This page contains 38 post code records. Every post code on this page maps to a single place.
Nearby counties include City and County of San Francisco County, Alameda County, Santa Clara County. Other counties in California (CA) include Alameda County, Alpine County, Amador County.
Addresses in San Mateo 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 San Mateo County?
24
How many post codes are in San Mateo County?
38
Which state is San Mateo County in?
California (CA)
What is the post code format?
5 digits