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Zip Code 91945 — Lemon Grove, CA

91945 is a ZIP Code associated with Lemon Grove, CA, located within San Diego. 91945 ranks #60 out of 115 ZIP codes in San Diego County by population (and #653 out of 1,802 in CA). The area supports an estimated population of 27,745 residents across Data Pending housing units, with a population density of 2,710.0 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (32.733150, -117.034020)

Data MetricLocal Statistic
Postal / Zip Code91945
Primary CityLemon Grove
State / ProvinceCA
CountySan Diego
Total Population27,745
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density2,710.0 people/sq mi
TimezoneAmerica/Los_Angeles

How 91945 Compares

MetricZIP 91945San Diego CountyCA State Average
Population27,7453,322,512 (Total)39,286,245 (Total)
Average ZIP IncomeData PendingN/AN/A
Population Density2,710.0 /sq mi----
County Pop Rank#60 of 115----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 92114San Diego2.1 mi65,745N/A
Zip 91977Spring Valley2.3 mi61,064N/A
Zip 92115San Diego2.9 mi66,264N/A
Zip 91941La Mesa3.0 mi33,218N/A
Zip 91942La Mesa3.1 mi41,424N/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 →