Find the last 4 digits (ZIP+4) for an address in 92078

ZIP 92078, San Marcos, CA is filled in. Just type the street address.

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ZIP Code 92078 – San Marcos, CA

San Marcos, California · San Diego County · Pacific time

ZIP code92078
CitySan Marcos
StateCalifornia
CountySan Diego County
Population53,605
Time zonePacific · local time
ZIP typeStandard (has a Census ZCTA area)
Land area16.7 sq mi
Center (lat, long)33.1171, -117.1808

Area codes in this area

858

These are the area codes that most often serve ZIP 92078 (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.

Map

Nearby ZIP codes

92096 San Marcos · 1.6 mi92079 San Marcos · 2 mi92029 Escondido · 3.9 mi92009 Carlsbad · 4 mi92069 San Marcos · 4.2 mi92091 Rancho Santa Fe · 4.5 mi92081 Vista · 4.8 mi92030 Escondido · 5.5 mi

About ZIP 92078

ZIP code 92078 is assigned to San Marcos, California. It lies in San Diego County. Its Census area covers about 16.7 square miles of land. The closest neighboring ZIP is 92096 (San Marcos), about 1.6 miles away.

Every address in 92078 also has a 4-digit add-on code (ZIP+4) that points to a smaller delivery area. Use the box above to find it.

Sources: US Census Bureau (ZCTA, county relationship files), GeoNames (CC BY 4.0), NANPA via NumberResearch.org (CC BY 4.0). Map © OpenStreetMap contributors. ZIP areas are approximate. Population: U.S. Census Bureau, ACS 5-year estimates, 2024 (ZCTA). Data sources