91731 ZIP Code — El Monte, CA

Los Angeles County, California

ZIP code 91731 is located in El Monte, California, within Los Angeles County. It covers approximately 3.80 square miles and serves a population of 28,201 residents. This is a standard ZIP code in the Pacific (PT) timezone, served by area code 626.

About ZIP code 91731

The housing stock consists of a significant share of large multi-unit buildings. Most homes were built in the 1950s, giving the area an established character. Median home value is $585,800. Renters make up the majority at 66%, typical of denser urban areas.

Median household income is $57,047. SNAP benefit usage at 22% of households reflects economic stress in the area. 33% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 30 minutes is near the national average.

College attainment at 14% is below the national average, consistent with a trades and production-oriented local economy.

Notable community characteristics include Spanish spoken in 40% of households.

Overall, ZIP code 91731 reflects a community defined by a trades-oriented workforce, a significant Social Security-dependent population, and elevated reliance on food assistance.

28,201

population

3.80

sq mi land

Standard

ZIP type

Pacific (PT)

timezone

91731 ZIP code map

Cities in ZIP code 91731

Below are the cities the US Postal Service accepts for ZIP code 91731. Using any city not on this list may result in mail delivery delays.

City	Status
El Monte	Preferred

Nearby ZIP codes

91735 El Monte (1.3 mi) 91771 Rosemead (1.5 mi) 91772 Rosemead (1.5 mi) 91780 Temple City (1.6 mi) 91732 El Monte (1.9 mi) 91770 Rosemead (2.4 mi) 91733 South El Monte (2.5 mi) 91776 San Gabriel (2.8 mi) 91007 Arcadia (3.1 mi) 91775 San Gabriel (3.7 mi) 91746 La Puente (3.8 mi) 91006 Arcadia (3.8 mi)

Demographics updated 06/2026

Population
Total population	28,201
Population density	7,421 / sq mi
State FIPS	06
County FIPS	037

Geography
Land area	3.80 sq mi
Water area	0.06 sq mi
Latitude	34.0799
Longitude	-118.0454
Timezone	Pacific (PT)
Area code	626

Total population by age

Gender

Race & ethnicity

Economics updated 06/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	51.1%	36.2%	32.6%
$50k – $100k	29.8%	28.2%	27.7%
$100k – $200k	17.6%	24.5%	26.4%
Over $200k	1.5%	11.0%	13.3%

Demographics & statistics

28,201

Population

7,421

People per sq mi

35.9

Median age

$57,047

Median household income

$21,981

Per capita income

$585,800

Median home value

$1,508

Median monthly rent

34.1%

Home ownership

17.2%

Poverty rate

8.1%

Unemployment

3,321

Housing units

14.1%

Bachelor's or higher

Age distribution

Male Female

972

Under 5

915

953

5–9

897

737

10–14

694

1,025

15–19

964

1,056

20–24

993

2,236

25–34

2,103

1,732

35–44

1,629

1,776

45–54

1,671

822

55–59

774

835

60–64

786

1,270

65–74

1,194

757

75–84

713

359

85+

338

← Male

Female →

Age summary

Group	Count	%
Under 18	6,486	23.0%
18 and over	21,715	77.0%
65 and over	4,631	16.4%
Median age	35.9 years

Race & ethnicity

Hispanic or Latino 29.7%

Asian 20.4%

White 16.3%

Other race 15.5%

Two or more races 14.5%

American Indian / Alaska Native 3%

Native Hawaiian / Pacific Islander 0.5%

Black or African American 0.3%

Group	Count	%
Hispanic or Latino	11,896	29.7%
Asian	8,170	20.4%
White	6,541	16.3%
Other race	6,199	15.5%
Two or more races	5,804	14.5%
American Indian / Alaska Native	1,186	3%
Native Hawaiian / Pacific Islander	186	0.5%
Black or African American	115	0.3%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	51.1%	36.2%	32.6%
$50k – $100k	29.8%	28.2%	27.7%
$100k – $200k	17.6%	24.5%	26.4%
Over $200k	1.5%	11.0%	13.3%

Under $10k 3.5%

$10k–$15k 6.5%

$15k–$25k 10.8%

$25k–$35k 10.7%

$35k–$50k 12.2%

$50k–$75k 20.0%

$75k–$100k 12.0%

$100k–$150k 16.5%

$150k–$200k 4.9%

$200k+ 3.0%

Range	% of households
Under $10k	3.5%
$10k–$15k	6.5%
$15k–$25k	10.8%
$25k–$35k	10.7%
$35k–$50k	12.2%
$50k–$75k	20.0%
$75k–$100k	12.0%
$100k–$150k	16.5%
$150k–$200k	4.9%
$200k+	3.0%
Median income	$57,047

Housing

Home values

Under $50k 3.7%

$50k–$100k 5.1%

$100k–$150k 5.9%

$150k–$200k 0.5%

$200k–$300k 2.3%

$300k–$500k 13.7%

$500k–$1M 66.0%

$1M+ 2.8%

Housing overview

Metric	Value
Median home value	$585,800
Median rent / month	$1,508
Owner occupied	34.1%
Renter occupied	65.9%
Vacant	5.3%
Single-family detached	44.6%
Large apartment buildings	25.5%
Mobile homes	4.7%
Median rooms	4.3
Avg household size (owned)	3.54

Year built

Era	%
2020 or later	0.3%
2010–2019	3.9%
2000–2009	6.6%
1990–1999	5.7%
1980–1989	8.6%
1970–1979	15.2%
1960–1969	16.3%
1950–1959	22.5%
1940–1949	11.6%
1939 or earlier	9.3%

Bedrooms

Size	% of units
No bedroom (studio)	6.8%
1 bedroom	21.9%
2 bedrooms	32.4%
3 bedrooms	29.8%
4 bedrooms	7.8%
5+ bedrooms	1.3%

Vehicles per household

Vehicles	% of households
No vehicle	13.9%
1 vehicle	30.5%
2 vehicles	30.1%
3 or more	25.5%

Heating fuel

Fuel type	%
Utility gas	55.0%
Electricity	37.8%
Propane / LP gas	0.6%
Fuel oil	0.1%
Solar	0.4%
No fuel used	6.0%

Households & families

Household type	Count	%
Married-couple family	3,456	41.3%
Cohabiting couple	693	8.3%
Male householder, no spouse	1,901	22.7%
Female householder, no spouse	2,320	27.7%
Households with children under 18	2,987	35.7%
Households with seniors (65+)	3,168	37.8%
Average household size	3.32

Marital status

Status	Male	Female
Never married	44.1%	38.1%
Married	43.7%	40.2%
Separated	2.5%	3.4%
Widowed	2.5%	9.6%
Divorced	7.1%	8.8%

Education

Less than 9th grade 21.7%

Some HS, no diploma 10.8%

HS graduate 30.5%

Some college, no degree 17.8%

Associate's degree 5.1%

Bachelor's degree 11.4%

Graduate / professional 2.7%

Metric	%
HS diploma or higher	67.5%
Bachelor's or higher	14.1%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	624	8.4%
Kindergarten	475	6.4%
Elementary school	2,246	30.4%
High school	1,847	25.0%
College / grad school	2,194	29.7%

Employment

Industry of employment

Education & healthcare 19.3%

Arts, food & hospitality 14.0%

Manufacturing 13.1%

Retail trade 9.9%

Professional & management 8.0%

Transportation & utilities 7.8%

Other services 6.6%

Construction 6.4%

Finance & real estate 4.9%

Wholesale trade 4.1%

Public administration 3.6%

Agriculture & mining 1.4%

Information 1.0%

Occupation

Category	%
Management, business & arts	24.3%
Service	21.4%
Sales & office	24.2%
Natural resources & construction	9.2%
Production & transportation	20.9%

Employment type

Type	%
Private sector	82.9%
Government	9.5%
Self-employed	7.1%
Unpaid family workers	0.5%

Commute

Method	%
Drive alone	72.5%
Carpool	12.1%
Public transit	5.1%
Walk	2.6%
Work from home	5.6%
Other means	2.0%
Avg commute (minutes)	30.0

Poverty

All people 17.2%

Under 18 years 17.3%

18 and over 17.2%

Married-couple families 8.4%

Female-led households 17.4%

Income support

Source	% of households
Social Security	33.2%
Retirement income	9.8%
Supplemental Security	13.7%
Cash public assistance	7.3%
Food stamps / SNAP	21.7%

Health indicators

Condition	%
Obesity	29.6%
High blood pressure	28.7%
High cholesterol	30.2%
Diabetes	13.4%
Heart disease	6.0%
Stroke	3.3%
Asthma	8.8%
Arthritis	17.6%
Kidney disease	3.3%
Pulmonary disease	6.0%
Cancer	4.1%

Behavior / access	%
Smoking	13.5%
Binge drinking	14.7%
No physical activity	31.1%
Less than 7 hrs sleep	35.0%
Depression	15.8%
Fair or poor health	23.2%
Poor mental health	16.2%
Poor physical health	12.6%
No health insurance	26.1%
Visited doctor (checkup)	62.1%
Visited dentist	46.7%
Cholesterol screening	87.3%
Teeth loss	15.7%

Veterans & disability

Veterans	Count	%
Civilian veterans	504	2.3%

Disability	%
Any disability	13.5%
Under 18	7.8%
18–64 years	8.0%
65 and over	42.8%

Health insurance coverage

Type	%
Private insurance	38.9%
Public insurance	53.5%
No insurance	12.9%
Uninsured under 19	3.9%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	26,314	93.3%
Spanish	10,476	39.8%
Other Indo-European	5,511	20.9%
Asian & Pacific Islander	92	0.3%
Other languages	4,873	18.5%

Place of birth & citizenship

Origin	Count	%
Native born (US)	15,072	53.4%
Born in same state	14,847	52.6%
Born in different state	14,003	49.7%
Foreign born	225	0.8%
Naturalized citizen	13,129	46.6%
Not a US citizen	6,974	53.1%

Ancestry

Ancestry	Count	%
Arab	400	1.4%
Italian	280	1%
French	147	0.5%
Dutch	82	0.3%

Ancestry	Count	%
German	20	0.1%
English	17	0.1%
Polish	11	0%

Technology access

Metric	% of households
Computer access	29.7%
Internet access	92.1%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 91731

What city is ZIP code 91731 in?

ZIP code 91731 is primarily assigned to El Monte, California.

What county is ZIP code 91731 in?

ZIP code 91731 falls within Los Angeles County, California.

Is Spanish widely spoken in ZIP code 91731?

Approximately 40% of households in ZIP code 91731 speak Spanish as a primary language.

Is ZIP code 91731 mostly rentals?

66% of occupied units in ZIP code 91731 are renter-occupied.

How educated is the population of ZIP code 91731?

14% of residents hold a bachelor's degree or higher — below the national average of ~33%, consistent with a trades-oriented local economy.

What is the poverty rate in ZIP code 91731?

17% of residents in ZIP code 91731 live below the poverty line, above the national average.

What timezone is ZIP code 91731 in?

ZIP code 91731 observes the PST timezone.