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

Zip Code 91942 — La Mesa, CA

ZIP Code 91942 is associated with La Mesa, CA, in San Diego County. The listed population estimate is 41,424; estimated density is 2,771.8 people per square mile. Among records with population estimates, it ranks #40 of 112 in San Diego County and #362 of 1,762 in CA.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (32.777280, -117.021290)

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

How 91942 Compares

MetricZIP 91942San Diego County recordsCA records
Population estimate41,4243,322,512 (sum)39,286,245 (sum)
Population Density2,771.8 /sq mi----
County population rank#40 of 112----
State population rank#362 of 1,762----

Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.

Explore More ZIP Codes

Nearby ZIP Codes in CA

ZIP CodeCityDistancePopulation estimate
ZIP 91941La Mesa2.1 mi33,218
ZIP 92119San Diego2.3 mi24,456
ZIP 92182San Diego3.1 miN/A
ZIP 92115San Diego3.1 mi66,264
ZIP 91945Lemon Grove3.1 mi27,745

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 →