ZIP Code 91731 — El Monte, California
ZIP code 91731 is located in El Monte, Los Angeles County, California. It is a standard zip code in the Pacific Time Zone with an estimated population of 28,201. The area code for zip code 91731 is 626.
📍 ZIP code 91731 is in El Monte, Los Angeles County, California.
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Coordinates: 34.0686° N, 118.0276° W
ZIP Code 91731 Demographics
Population
Income
Housing
Education
Population and demographic data sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code routing data sourced from the United States Postal Service (USPS).
Affordability & Profile: ZIP 91731 in Context
The median home in 91731 is valued at $585,800 against a median household income of $57,047, a price-to-income ratio of 10.3. That is below the 11.1 median across the 95 ZIP codes on this site and well past the 3.0 ratio that marks an attainable market nationally, which means a household earning the local median income cannot finance the local median home on conventional terms. Renting takes 31.7% of median household income (median rent $1,508 a month), above the 30% cost-burden threshold.
91731 ranks 75 of 95 on median household income and 81 of 95 on median home value. 34% of households own their home, below the 36% metro median, so most residents rent. 14% of adults hold a bachelor's degree or higher (rank 82 of 95), and the poverty rate is 17.2%, above the 15.1% metro median. Unemployment stands at 8.1%.
With 11,522 residents per square mile, 91731 is in line with the metro median of 11,522 (rank 41 of 95). This is a mixed urban fabric of apartments, small-lot houses and commercial corridors.
Ratios and ranks are computed from the ACS figures above across all 95 ZIP codes on this site. See the 2026 affordability report for the metro-wide analysis and the methodology for definitions.