Home > CA > San Diego County > La Mesa > Zip 91942

Zip Code 91942 — La Mesa, CA

91942 is a ZIP Code associated with La Mesa, CA, located within San Diego. The postal region supports an estimated population of 41,424 residents across Data Pending housing units, with a population density of 2,771.8 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (32.777280, -117.021290)

Data MetricLocal Statistic
Postal / Zip Code91942
Primary CityLa Mesa
State / ProvinceCA
CountySan Diego
Total Population41,424
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density2,771.8 people/sq mi
TimezoneAmerica/Los_Angeles

How 91942 Compares

MetricZIP 91942San Diego CountyCA State Average
Population41,4243,322,51239,286,245
Median IncomeData PendingN/AN/A
Population Density2,771.8 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 91941La Mesa2.1 mi33,218N/A
Zip 92119San Diego2.3 mi24,456N/A
Zip 92182San Diego3.1 miN/AN/A
Zip 92115San Diego3.1 mi66,264N/A
Zip 91945Lemon Grove3.1 mi27,745N/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 →