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ZIP Code Database - Facts & Stats

Data Last Updated: May 1, 2022

ZIP Codes for City of Walnut Creek, CA

Walnut Creek, CA Covers 4 ZIP Codes

ZIP CodeTypeCountyPopulationArea Code(s)
ZIP Code 94595StandardContra Costa16,425341 / 510 / 707 / 925
ZIP Code 94596StandardContra Costa20,037341 / 510 / 707 / 925
ZIP Code 94597StandardContra Costa20,277925
ZIP Code 94598StandardContra Costa25,818341 / 510 / 707 / 925

Timezone(s):Pacific (GMT -08:00)
Population:64,173 (More Details)
Male Population:29,740
Female Population:34,433
Median Age:48
ZIP Codes:4
Area Codes:4
Total Area:804 square miles (county)
Land Area:723 square miles (county)
Water Area:81 square miles (county)

Walnut Creek, CA Demographic Information *

Total population64,173
Male population29,740
Female population34,433
Median age (years)47.9
White Population50,487
Black Population1,035
Indian Population155
Asian Population8,027
Hawaiian Population125
Hispanic Population5,540
Median age (Male)45.1
Median age (Female)50.6
Total households30,443
Family households (families)16,220
Average household size2.08
Average family size2.79
Total housing units32,681
* 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],