Find the last 4 digits (ZIP+4) for an address in 91978

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ZIP Code 91978 – Spring Valley, CA

Spring Valley, California · San Diego County · Pacific time

ZIP code91978
CitySpring Valley
StateCalifornia
CountySan Diego County
Population10,014
Time zonePacific · local time
ZIP typeStandard (has a Census ZCTA area)
Land area11.94 sq mi
Center (lat, long)32.6989, -116.9310

Area codes in this area

858

These are the area codes that most often serve ZIP 91978 (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

91914 Chula Vista · 2.6 mi91977 Spring Valley · 4.1 mi91902 Bonita · 4.7 mi91976 Spring Valley · 5.1 mi91979 Spring Valley · 5.1 mi91915 Chula Vista · 5.3 mi91941 La Mesa · 5.7 mi91913 Chula Vista · 6.2 mi

About ZIP 91978

ZIP code 91978 is assigned to Spring Valley, California. It lies in San Diego County. Its Census area covers about 11.94 square miles of land. The closest neighboring ZIP is 91914 (Chula Vista), about 2.6 miles away.

Every address in 91978 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