Zip Code 91340 — San Fernando, CA

ZIP Code 91340 is associated with San Fernando, CA, in Los Angeles County. The listed population estimate is 33,424; estimated density is 3,761.3 people per square mile. Among records with population estimates, it ranks #128 of 288 in Los Angeles County and #522 of 1,762 in CA.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (34.286680, -118.434790)

Data MetricLocal Statistic
Postal / Zip Code91340
Primary CitySan Fernando
State / ProvinceCA
CountyLos Angeles
Total Population33,424
Population Density3,761.3 people/sq mi
TimezoneAmerica/Los_Angeles

How 91340 Compares

MetricZIP 91340Los Angeles County recordsCA records
Population estimate33,4249,807,501 (sum)39,286,245 (sum)
Population Density3,761.3 /sq mi----
County population rank#128 of 288----
State population rank#522 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 91345Mission Hills2.0 mi18,714
ZIP 91331Pacoima2.3 mi97,608
ZIP 91342Sylmar3.3 mi93,301
ZIP 91344Granada Hills4.0 mi52,890
ZIP 91343North Hills4.2 mi60,783

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 →