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Zip Code 91945 — Lemon Grove, CA

ZIP Code 91945 is associated with Lemon Grove, CA, in San Diego County. The listed population estimate is 27,745; estimated density is 2,710.0 people per square mile. Among records with population estimates, it ranks #60 of 112 in San Diego County and #653 of 1,762 in CA.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (32.733150, -117.034020)

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

How 91945 Compares

MetricZIP 91945San Diego County recordsCA records
Population estimate27,7453,322,512 (sum)39,286,245 (sum)
Population Density2,710.0 /sq mi----
County population rank#60 of 112----
State population rank#653 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 92114San Diego2.1 mi65,745
ZIP 91977Spring Valley2.3 mi61,064
ZIP 92115San Diego2.9 mi66,264
ZIP 91941La Mesa3.0 mi33,218
ZIP 91942La Mesa3.1 mi41,424

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 →