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ZIP Code Database - Facts & Stats

Data Last Updated: May 1, 2022

ZIP Codes for City of Martinez, CA

Martinez, CA Covers 1 ZIP Code

ZIP CodeTypeCountyPopulationArea Code(s)
ZIP Code 94553StandardContra Costa47,065925

Timezone(s):Pacific (GMT -08:00)
Population:35,824 (More Details)
Male Population:17,633
Female Population:18,191
Median Age:42
ZIP Codes:1
Area Codes:1
Total Area:804 square miles (county)
Land Area:723 square miles (county)
Water Area:81 square miles (county)

Martinez, CA Demographic Information *

Total population35,824
Male population17,633
Female population18,191
Median age (years)42.2
White Population27,603
Black Population1,303
Indian Population255
Asian Population2,876
Hawaiian Population121
Hispanic Population5,258
Median age (Male)40.9
Median age (Female)43.5
Total households14,287
Family households (families)9,173
Average household size2.42
Average family size2.95
Total housing units14,976
* Demographic data is based on 2010 Census. Products


  1. U.S. Postal Service [Last Updated: 5/1/2022],
  2. Internal Data Creation [Last Updated: 5/1/2022],
  3. U.S. Geological Survey [Updated as needed],
  4. U.S. Census [Updated Yearly],
  5. U.S. Census 2010 [Decennial] [Last Updated: 1/1/2010],