San Marcos, CA ZIP Codes

Total ZIPs

89,275

Total Population

ZIP Codes in San Marcos, CA

ZIP Code	Population	Density	Timezone
92069	46,369	1,088	America/Los_Angeles
92078	42,906	993	America/Los_Angeles

All data sourced from the U.S. Census Bureau, American Community Survey (ACS) 5-Year Estimates (2023).

PlainZIP is not affiliated with the U.S. Census Bureau or any government agency.