Seaside, CA ZIP Code
Seaside, California has one ZIP code: .
Mail addressed to Seaside covers nearby places too.
Where the 93955 ZIP code reaches
Tap or point to an area to see its ZIP code.Full-size map
Dashed line: Seaside city limits.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).
Check an address in Seaside
Street ranges from the Census Bureau, 2026. PO box and organization ZIP codes are not found by street. A new street may be missing: address not found?
Why your mail may say Seaside when you live outside it
Seaside ZIP codes also cover Sand City and Del Rey Oaks, so a letter addressed to Seaside can go to a home outside the city limits.
A ZIP code does not set your city, school district or tax. Monterey County property records show which city you are in.
Seaside ZIP code questions
What is the main ZIP code for Seaside?
93955, the ZIP code of the main Seaside post office at 1093 Broadway Ave.
What county is Seaside in?
Monterey County.
ZIP codes for towns near Seaside
More towns near Seaside: Los Gatos, Campbell, Saratoga, San Jose, Cupertino, Santa Clara, Los Altos, Sunnyvale, Mountain View.
Sources and last checked
USPS ZIP Locale Detail (October 1, 2026), GeoNames (CC BY 4.0), U.S. Census Bureau, HUD-USPS crosswalk.
Checked October 20, 2026. Sources · How we build our lists · Corrections