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ZIP Code Database - Facts & Stats

Data Last Updated: May 1, 2022

ZIP Codes for City of Portola Valley, CA

Portola Valley, CA Covers 1 ZIP Code

ZIP CodeTypeCountyPopulationArea Code(s)
ZIP Code 94028StandardSan Mateo6,534650

Timezone(s):Pacific (GMT -08:00)
Counties:SAN MATEO, CA
Population:4,353 (More Details)
Male Population:2,159
Female Population:2,194
Median Age:51
ZIP Codes:1
Area Codes:1
Total Area:741 square miles (county)
Land Area:448 square miles (county)
Water Area:292 square miles (county)

Portola Valley, CA Demographic Information *

Total population4,353
Male population2,159
Female population2,194
Median age (years)51.3
White Population3,960
Black Population12
Indian Population5
Asian Population242
Hawaiian Population1
Hispanic Population175
Median age (Male)50.2
Median age (Female)52.3
Total households1,746
Family households (families)1,254
Average household size2.47
Average family size2.93
Total housing units1,895
* 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],