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ZIP Code Database - Facts & Stats

Data Last Updated: May 1, 2022

ZIP Codes for City of Atascadero, CA

Atascadero, CA Covers 2 ZIP Codes

ZIP CodeTypeCountyPopulationArea Code(s)
ZIP Code 93422StandardSan Luis Obispo31,375805 / 820
ZIP Code 93423P.O. BoxSan Luis Obispo0805 / 820

Timezone(s):Pacific (GMT -08:00)
Population:28,310 (More Details)
Male Population:14,379
Female Population:13,931
Median Age:41
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)

Atascadero, CA Demographic Information *

Total population28,310
Male population14,379
Female population13,931
Median age (years)41
White Population24,457
Black Population585
Indian Population295
Asian Population685
Hawaiian Population57
Hispanic Population4,429
Median age (Male)40
Median age (Female)42.2
Total households10,737
Family households (families)7,404
Average household size2.51
Average family size2.94
Total housing units11,505
* 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],