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Zip Code 91731 — El Monte, CA

91731 is a ZIP Code associated with El Monte, CA, located within Los Angeles. The postal region supports an estimated population of 27,620 residents across Data Pending housing units, with a population density of 2,809.7 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (34.079140, -118.040470)

Data MetricLocal Statistic
Postal / Zip Code91731
Primary CityEl Monte
State / ProvinceCA
CountyLos Angeles
Total Population27,620
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density2,809.7 people/sq mi
TimezoneAmerica/Los_Angeles

How 91731 Compares

MetricZIP 91731Los Angeles CountyCA State Average
Population27,6209,807,50139,286,245
Median IncomeData PendingN/AN/A
Population Density2,809.7 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 91732El Monte1.6 mi57,431N/A
Zip 91780Temple City1.8 mi35,588N/A
Zip 91733South El Monte2.4 mi41,255N/A
Zip 91770Rosemead2.7 mi58,382N/A
Zip 91776San Gabriel3.2 mi36,952N/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 →