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ZIP Code Database - Facts & Stats

Data Last Updated: May 1, 2022

ZIP Codes for City of Arroyo Grande, CA

Arroyo Grande, CA Covers 2 ZIP Codes

ZIP CodeTypeCountyPopulationArea Code(s)
ZIP Code 93420StandardSan Luis Obispo28,413805 / 820
ZIP Code 93421P.O. BoxSan Luis Obispo0805

Timezone(s):Pacific (GMT -08:00)
Population:17,252 (More Details)
Male Population:8,294
Female Population:8,958
Median Age:45
ZIP Codes:2
Area Codes:2
Total Area:3,616 square miles (county)
Land Area:3,299 square miles (county)
Water Area:317 square miles (county)

Arroyo Grande, CA Demographic Information *

Total population17,252
Male population8,294
Female population8,958
Median age (years)45.4
White Population14,710
Black Population156
Indian Population125
Asian Population595
Hawaiian Population14
Hispanic Population2,707
Median age (Male)42.5
Median age (Female)47.5
Total households7,087
Family households (families)4,669
Average household size2.41
Average family size2.93
Total housing units7,628
* 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],