Postal Codes

91731 ZIP Code

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ZIP code 91731 covers El Monte, California, with a population of about 28,122 and a median household income of $60,887.

Population
28,1227,409 per square mile
Median age
35.82.9 points below the US average
Median household income
$60,88737% below the California median
Poverty rate
18.4%6 points above the US average
Typical home value
$772,058up 19% in five years
Median rent
$1,58319% below the California median
Degree or higher
15.2%19.8 points below the US average
Homeownership
35.7%29.3 points below the US average
Time zone
Pacific UTC-08:00observes daylight saving time
Businesses
1,121

Where 91731 is

El Monte, California — the area the Census Bureau draws for this ZIP code. ZIP codes are sets of delivery routes rather than areas, so this is the Census approximation of one, not a Postal Service boundary.

People and households

American Community Survey 2019–2023 five-year estimates

Population28,122
Median age35.8
Family households74.5%
Born outside the US46.6%
Speaks a language other than English at home82.5%
White (non-Hispanic)4.5%
Black (non-Hispanic)0.3%
Asian (non-Hispanic)28.3%
Hispanic or Latino65%
Veterans2.5%
Population by age
MaleFemale0-45-910-1415-1920-2425-3435-4445-5455-6465-7475-8485+
Income and poverty

American Community Survey 2019–2023 five-year estimates

Median household income$60,887
Income per person$23,538
Poverty rate18.4%
Households on SNAP or cash assistance26.4%

Household income distribution

Under $10k3.8%
$10–15k5.4%
$15–20k4.7%
$20–25k5.9%
$25–30k4.7%
$30–35k5.2%
$35–40k4.6%
$40–45k4.0%
$45–50k2.9%
$50–60k7.7%
$60–75k10.1%
$75–100k12.2%
$100–125k10.3%
$125–150k7.5%
$150–200k6.2%
$200k or more4.9%

Income as declared to the IRS

Filed returns rather than survey responses, so this counts tax units and not households.

Tax returns filed12,130
Mean adjusted gross income$48,080
Returns declaring $200,000 or more1.5%
Returns, under $25k35.0%
Returns, $25k–$50k33.1%
Returns, $50k–$75k15.7%
Returns, $75k–$100k7.5%
Returns, $100k–$200k7.2%
Returns, $200k or more1.5%
Housing

American Community Survey 2019–2023 five-year estimates

Median home value$614,000
Median gross rent$1,583
Rent as a share of household income36.5%
Owner-occupied35.7%
Vacant homes5.1%
Median year built1964

What the homes are

Detached house44.8%
Attached house7.2%
2 to 4 units7.1%
5 to 19 units10.5%
20 or more units25%
Mobile home5.4%
Home values and rents today

Zillow Home Value Index and Zillow Observed Rent Index, courtesy of Zillow. Monthly and current, where the Census figures above are a five-year average and are capped at $2,000,000.

Typical home value$772,058as of 2026-07
Typical home value, 1 yearup 1.5%
Typical home value, 5 yearsup 19%
Typical home value, 10 yearsup 77.6%
Typical asking rent$2,415as of 2026-07
Typical asking rent, 1 yearup 0.3%
Typical home value since 2000
200020132026$772,058$178,232

$178,232 in 2000 to $772,058 in 2026.

Work, commuting and education

American Community Survey 2019–2023 five-year estimates

Unemployment rate6.8%
Bachelor's degree or higher15.2%
High school diploma or higher67.5%
Works from home7.7%
Drives to work alone68.7%
Takes public transport4.3%
Commutes 45 minutes or more21.9%
Health

CDC PLACES 2025 release, model-based estimates. These are modelled small-area estimates for adults, not counts of diagnosed cases.

Obesity26.1% 7.3 pts below the national average of 33.4%
Diagnosed diabetes16.2% 4.2 pts above the national average of 12%
Currently smokes13.3% same as the national average of 13.2%
High blood pressure31.7% 2.4 pts below the national average of 34.1%
Fair or poor general health31.6% 11.3 pts above the national average of 20.3%
No health insurance (18–64)18.3% 7 pts above the national average of 11.3%
Depression17.1% 4.8 pts below the national average of 21.9%
No leisure-time physical activity35.4% 10 pts above the national average of 25.4%
Arthritis19.1% 6 pts below the national average of 25.1%
Binge drinking12.7% 3.3 pts below the national average of 16%
Taking blood pressure medication72.4% 2.3 pts below the national average of 74.7%
Cancer (non-skin)4.3% 3.4 pts below the national average of 7.7%
Current asthma8.3% 2.1 pts below the national average of 10.4%
Coronary heart disease6.2% same as the national average of 6.2%
Routine check-up in past year70.3% 6.4 pts below the national average of 76.7%
Cholesterol screening81.5% 4.4 pts below the national average of 85.9%
Cognitive disability18% 3.2 pts above the national average of 14.8%
Colorectal screening47.1% 17.2 pts below the national average of 64.3%
COPD5.4% 1.2 pts below the national average of 6.6%
Visited a dentist49.4% 11.9 pts below the national average of 61.3%
Any disability37% 6.3 pts above the national average of 30.7%
Lacks emotional support36.8% 12 pts above the national average of 24.8%
Food insecurity31.1% 14 pts above the national average of 17.1%
Received food stamps26.1% 11.8 pts above the national average of 14.3%
Hearing disability6.6% same as the national average of 6.7%
High cholesterol39.3% 3.1 pts above the national average of 36.2%
Housing insecurity22.6% 8.8 pts above the national average of 13.8%
Independent living disability10.4% 2 pts above the national average of 8.4%
Lacks transport13.7% 4.5 pts above the national average of 9.2%
Loneliness43.8% 9.4 pts above the national average of 34.4%
Mammography use71.2% 4.7 pts below the national average of 75.9%
Poor mental health (14+ days)16.6% same as the national average of 16.8%
Mobility disability18.2% 4.2 pts above the national average of 14%
Poor physical health (14+ days)16.5% 3 pts above the national average of 13.5%
Self-care disability5.6% 1.6 pts above the national average of 4%
Utility shut-off threat9.5% 0.7 pts above the national average of 8.8%
Sleeps under 7 hours38.3% 1.9 pts above the national average of 36.4%
Stroke3.7% same as the national average of 3.4%
All natural teeth lost13.3% same as the national average of 13%
Vision disability9.2% 3.6 pts above the national average of 5.6%
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Business and employment

Census ZIP Code Business Patterns 2022

Business establishments1,121
People employed15,708
Annual payroll$885,695,000
Natural hazard risk

FEMA National Risk Index, estimated for this ZIP code from census tract data — the NRI is not published per ZIP.

Overall riskHigher than 94.8% of US census tracts
FEMA ratingRelatively Moderate to Very High across the 13 census tracts this ZIP code covers
Expected annual loss90.2 out of 100
Community resilience12.7 out of 100

By hazard

Score is out of 100 and is the area-weighted average across the census tracts this ZIP code covers. The rating beside it is the highest any one of those tracts carries.

Earthquake97.9Very High at its worst in this ZIP code
River flooding91.3Very High at its worst in this ZIP code
Heat wave44.4Relatively Moderate at its worst in this ZIP code
Landslide36.5Very Low at its worst in this ZIP code
Hail29.1Very Low at its worst in this ZIP code
Tornado27.3Relatively Low at its worst in this ZIP code
Winter weather13.2Very Low at its worst in this ZIP code
Lightning11.4Very Low at its worst in this ZIP code
Strong wind9.2Very Low at its worst in this ZIP code
Drought4Very Low at its worst in this ZIP code
Wildfire1.9Very Low at its worst in this ZIP code
Compared with California and the United States

State and national columns are figures for those areas, not for this ZIP code. American Community Survey 2019–2023 five-year estimates

This ZIPCaliforniaUnited States
Median household income$60,887$96,334$78,538
Income per person$23,538$47,977$43,289
Poverty rate18.4%12%12.4%
Median home value$614,000$695,400$303,400
Median gross rent$1,583$1,956$1,348
Homeownership35.7%55.8%65%
Bachelor's degree or higher15.2%36.5%35%
Unemployment rate6.8%6.4%5.2%
Works from home7.7%15.5%13.5%
Born outside the US46.6%26.7%13.9%
Median age35.837.638.7
Climate

NOAA US Climate Normals 1991-2020, from the nearest weather station with a full year of records. The station and its distance are named above, because a station forty kilometres away describes somewhere else.

Weather stationSAN GABRIEL FIRE DEPT, CA US5.8 km away
Rain in a year16 in

Average high and low by month

January68.6°F / 46.1°F3.56 in rain
February68.2°F / 47.1°F4.22 in rain
March70.9°F / 50.5°F2.53 in rain
April73.8°F / 52.7°F0.61 in rain
May75.6°F / 57.6°F0.48 in rain
June80.8°F / 61.5°F0.13 in rain
July85.5°F / 65.2°F0.04 in rain
August87.6°F / 65.5°F0 in rain
September86.7°F / 63.6°F0.13 in rain
October80.7°F / 57.4°F0.61 in rain
November74°F / 50.6°F0.92 in rain
December67.8°F / 45.3°F2.44 in rain
Access to food

USDA Food Access Research Atlas, estimated for this ZIP code from census tract data. Each figure is the share of the ZIP code's land area that falls in a tract carrying that flag.

Low income and far from a supermarketNone of this ZIP code
Far from a supermarketNone of this ZIP code
No vehicle and far from a supermarket14% of this ZIP code's area
School districts

NCES Geographic Relationship File 2025, which states the association between each district and each ZIP code tabulation area directly. Elementary and secondary districts can cover the same ground, so shares need not total 100%.

This ZIP code is served by 3 school districts, so the address decides which one, not the ZIP code.

El Monte Union High School District50% of this ZIP code's land area
El Monte City School District44% of this ZIP code's land area
Rosemead Elementary School District5.4% of this ZIP code's land area
Community and walkability

CDC/ATSDR Social Vulnerability Index 2022 and the EPA National Walkability Index, both estimated for this ZIP code from census tract data. Vulnerability figures are national percentile ranks, not measurements.

Overall social vulnerability92more vulnerable than 92% of US census tracts
Socioeconomic status87more vulnerable than 87% of US census tracts
Household characteristics80more vulnerable than 80% of US census tracts
Racial and ethnic minority status96more vulnerable than 96% of US census tracts
Housing type and transport83more vulnerable than 83% of US census tracts
Walkability14.5 out of 20Above average
Nearby ZIP codes

The closest ZIP codes by centre point, which is not the same as sharing a border.

91734 El Monte, CA1.5 km away
91735 El Monte, CA1.5 km away
91732 El Monte, CA2.3 km away
91733 South El Monte, CA2.7 km away
91780 Temple City, CA2.9 km away
91771 Rosemead, CA3.3 km away
91772 Rosemead, CA3.3 km away
91770 Rosemead, CA4.7 km away
Location, counties and time zone

County shares from Census 2020 ZCTA relationship files. Time zone from the USDOT National Transportation Atlas, which renders the boundaries written into 49 CFR Part 71.

Los Angeles County100% of this ZIP code's land area
Time zonePacific (UTC-08:00 standard)
Daylight saving timeObserved
Land area3.8 sq mi
Water area0.06 sq mi
Population density7,409 people per sq mi
Latitude, longitude34.0791, -118.0371

Figures are published for this ZIP code or its Census tabulation area unless a section says otherwise. Estimates whose margin of error made them unreliable are omitted rather than shown. Sources: US Census Bureau, CDC, IRS.

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