ZIP Code 91731 — El Monte, California
91731 is a majority-renter, middle-income El Monte ZIP code with 27,620 residents in Los Angeles County. Median household income is $62,215, 8% below the median for Los Angeles ZIP codes on this site, and the median home is valued at $635,600.
How 91731 compares
| Figure | 91731 | LA ZIP median | Rank |
|---|---|---|---|
| Median household income | $62,215 | $67,834 | 70th of 95 |
| Median home value | $635,600 | $972,050 | 80th of 95 |
| Median gross rent | $1,669 | $1,792 | 67th of 95 |
| Median age | 36.6 | 36.7 | 57th of 95 (tied) |
| Mean commute (minutes) | 29.3 min | 30.8 min | 51st of 95 |
| Poverty rate | 17.8% | 18.4% | 35th of 95 |
| Owner-occupied homes | 40% | 29% | 41st of 95 |
| Bachelor's degree or higher | 15% | 41% | 82nd of 95 (tied) |
| Unemployment rate | 6.2% | 8.6% | 70th of 95 |
Ranks count from the highest value (1st) among the 95 ZIP codes on this site with full Census data. The Los Angeles (LA) ZIP median is the middle value across the 60 of them with a Los Angeles mailing address.
What stands out in 91731
15% of adults 25 and older hold at least a bachelor's degree, tied for the 13th-lowest of 95; the Los Angeles ZIP median is 41%.
The median owner-estimated home value is $635,600, 35% below the $972,050 Los Angeles ZIP median and the 16th-lowest of 95. At 10.2 times median household income, homes here are closer to local incomes than in the typical Los Angeles ZIP (12.7).
Median household income is 2.6 times per-capita income ($24,216), the 19th-highest of 95 on that ratio. That usually means larger households, often with more than one earner.
Buying and renting in 91731
Homes here cost 10.2 times the median household income, below the 12.7 of the typical Los Angeles ZIP, the 33rd most attainable of 90 on price-to-income. All 5 of its nearest ZIPs with an exact ratio are more attainable; the closest to local incomes is 91101 (Pasadena), at 7.8. Renting, the majority choice here, costs 32.2% of median household income, over HUD's 30% cost-burden line.
The 2026 affordability report ranks every ZIP on these two ratios.
91731 and its neighbors
Next to its five nearest ZIPs (91016, 90640, 91101, 90022, 90032), 91731 differs most on median household income: $62,215 against a neighborhood median of $82,292, the lowest in the group.
The sharpest contrast is 91101 (Pasadena), about 7.2 miles away, where 60% of adults have a bachelor's degree, against 15% here. The closest match among the five is 90022 (Los Angeles).
Distances are straight lines between ZIP center points.
ZIP Code 91731 Census figures
People
Income and work
Housing
Education (adults 25 and older)
Postal and location facts
The main area code is the code most numbers in the ZIP use; overlay codes can also be assigned in the same area.
Map
Frequently Asked Questions
Sources and methodology
Figures are U.S. Census Bureau ACS 5-year estimates, 2020-2024 for the ZIP Code Tabulation Area (ZCTA), the Census Bureau's stand-in for a ZIP code. They describe the area over the five-year survey window, not a single year, and small areas carry wider margins of error. Comparisons and ranks are computed on this site from the same figures; the "Los Angeles ZIP median" is the middle value across the Los Angeles ZIP codes here, each counted once.
| Figure | Census table |
|---|---|
| Population | B01003 |
| Median age | B01002 |
| Median household income | B19013 |
| Poverty rate | S1701 |
| Unemployment rate | S2301 |
| Owner / renter share of occupied homes | B25003 |
| Median home value (owner estimate) | B25077 |
| Median gross rent | B25064 |
| Bachelor's degree or higher (age 25+) | S1501 |
| Mean travel time to work | DP03 |
Land and water area come from the Census Bureau's 2020 ZIP Code Tabulation Area geography; density is population ÷ land area. Area codes come from North American Numbering Plan maps and ZIP city names from the USPS. Full field list, formulas and limitations: methodology.