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Zip Code 92121 — San Diego, CA

92121 is a ZIP Code associated with San Diego, CA, located within San Diego. 92121 ranks #84 out of 115 ZIP codes in San Diego County by population (and #1162 out of 1,802 in CA). The area supports an estimated population of 3,974 residents across Data Pending housing units, with a population density of 122.4 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (32.897300, -117.202310)

Data MetricLocal Statistic
Postal / Zip Code92121
Primary CitySan Diego
State / ProvinceCA
CountySan Diego
Total Population3,974
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density122.4 people/sq mi
TimezoneAmerica/Los_Angeles

How 92121 Compares

MetricZIP 92121San Diego CountyCA State Average
Population3,9743,322,512 (Total)39,286,245 (Total)
Average ZIP IncomeData PendingN/AN/A
Population Density122.4 /sq mi----
County Pop Rank#84 of 115----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 92093La Jolla2.3 mi7,167N/A
Zip 92161San Diego2.3 mi29N/A
Zip 92092La Jolla2.5 mi528N/A
Zip 92122San Diego2.8 mi45,411N/A
Zip 92130San Diego3.5 mi60,768N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →