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ZIP Code Database - Facts & Stats

Data Last Updated: June 1, 2022

ZIP Codes for City of San Marcos, CA

San Marcos, CA Covers 4 ZIP Codes

ZIP CodeTypeCountyPopulationArea Code(s)
ZIP Code 92069StandardSan Diego46,369760 / 442
ZIP Code 92078StandardSan Diego42,906760 / 442
ZIP Code 92079P.O. BoxSan Diego0760 / 442
ZIP Code 92096UniqueSan Diego0760 / 442

Timezone(s):Pacific (GMT -08:00)
Counties:SAN DIEGO, CA
Population:83,781 (More Details)
Male Population:40,957
Female Population:42,824
Median Age:33
ZIP Codes:4
Area Codes:2
Total Area:4,526 square miles (county)
Land Area:4,207 square miles (county)
Water Area:319 square miles (county)

San Marcos, CA Demographic Information *

Total population83,781
Male population40,957
Female population42,824
Median age (years)32.9
White Population53,235
Black Population1,967
Indian Population591
Asian Population7,518
Hawaiian Population322
Hispanic Population30,697
Median age (Male)31.9
Median age (Female)33.8
Total households27,202
Family households (families)19,811
Average household size3.05
Average family size3.49
Total housing units28,641
* Demographic data is based on 2010 Census. Products


  1. U.S. Postal Service [Last Updated: 6/1/2022],
  2. Internal Data Creation [Last Updated: 6/1/2022],
  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],