91770 ZIP Code — Rosemead, CA

Los Angeles County, California

ZIP code 91770 is located in Rosemead, California, within Los Angeles County. It covers approximately 6.52 square miles and serves a population of 59,410 residents. This is a standard ZIP code in the Pacific (PT) timezone, served by area code 626.

About ZIP code 91770

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1950s, giving the area an established character. Median home value is $673,800. Owner-occupancy sits near the national average at 52%.

Median household income is $70,863. 34% 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 29 minutes is near the national average.

Educational attainment is near the national average, with 23% of residents holding a bachelor's degree or higher.

Notable community characteristics include Spanish spoken in 47% of households.

59,410

population

6.52

sq mi land

Standard

ZIP type

Pacific (PT)

timezone

91770 ZIP code map

Cities in ZIP code 91770

Below are the cities the US Postal Service accepts for ZIP code 91770. Using any city not on this list may result in mail delivery delays.

City	Status
Rosemead	Preferred

Nearby ZIP codes

91771 Rosemead (1.4 mi) 91772 Rosemead (1.4 mi) 91776 San Gabriel (1.8 mi) 91755 Monterey Park (1.9 mi) 91733 South El Monte (2.1 mi) 91756 Monterey Park (2.3 mi) 91731 El Monte (2.4 mi) 91735 El Monte (3.2 mi) 91780 Temple City (3.3 mi) 91804 Alhambra (3.4 mi) 91801 Alhambra (3.6 mi) 91803 Alhambra (3.7 mi)

Demographics updated 07/2026

Population
Total population	59,410
Population density	9,112 / sq mi
State FIPS	06
County FIPS	037

Geography
Land area	6.52 sq mi
Water area	0.08 sq mi
Latitude	34.0625
Longitude	-118.0820
Timezone	Pacific (PT)
Area code	626

Total population by age

Gender

Race & ethnicity

Economics updated 07/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	41.2%	36.2%	32.6%
$50k – $100k	34.0%	28.2%	27.7%
$100k – $200k	20.1%	24.5%	26.4%
Over $200k	4.7%	11.0%	13.3%

Demographics & statistics

59,410

Population

9,112

People per sq mi

43.2

Median age

$70,863

Median household income

$26,015

Per capita income

$673,800

Median home value

$1,674

Median monthly rent

51.5%

Home ownership

11.7%

Poverty rate

5.0%

Unemployment

9,451

Housing units

23.1%

Bachelor's or higher

Age distribution

Male Female

1,449

Under 5

1,434

1,124

5–9

1,112

1,638

10–14

1,622

1,980

15–19

1,960

1,839

20–24

1,821

3,808

25–34

3,770

3,739

35–44

3,701

4,310

45–54

4,267

2,410

55–59

2,387

1,900

60–64

1,882

3,169

65–74

3,137

1,502

75–84

1,488

985

85+

976

← Male

Female →

Age summary

Group	Count	%
Under 18	11,041	18.6%
18 and over	48,369	81.4%
65 and over	11,257	18.9%
Median age	43.2 years

Race & ethnicity

Asian 51.3%

Hispanic or Latino 19.8%

Other race 16.9%

White 7.1%

Two or more races 3.7%

American Indian / Alaska Native 0.7%

Black or African American 0.5%

Group	Count	%
Asian	37,978	51.3%
Hispanic or Latino	14,649	19.8%
Other race	12,517	16.9%
White	5,294	7.1%
Two or more races	2,740	3.7%
American Indian / Alaska Native	490	0.7%
Black or African American	374	0.5%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	41.2%	36.2%	32.6%
$50k – $100k	34.0%	28.2%	27.7%
$100k – $200k	20.1%	24.5%	26.4%
Over $200k	4.7%	11.0%	13.3%

Under $10k 3.5%

$10k–$15k 3.5%

$15k–$25k 7.0%

$25k–$35k 10.1%

$35k–$50k 12.2%

$50k–$75k 15.8%

$75k–$100k 14.1%

$100k–$150k 18.6%

$150k–$200k 8.2%

$200k+ 7.1%

Range	% of households
Under $10k	3.5%
$10k–$15k	3.5%
$15k–$25k	7.0%
$25k–$35k	10.1%
$35k–$50k	12.2%
$50k–$75k	15.8%
$75k–$100k	14.1%
$100k–$150k	18.6%
$150k–$200k	8.2%
$200k+	7.1%
Median income	$70,863

Housing

Home values

Under $50k 1.8%

$50k–$100k 1.5%

$100k–$150k 0.3%

$150k–$200k 1.0%

$200k–$300k 1.1%

$300k–$500k 13.1%

$500k–$1M 71.6%

$1M+ 9.6%

Housing overview

Metric	Value
Median home value	$673,800
Median rent / month	$1,674
Owner occupied	51.5%
Renter occupied	48.5%
Vacant	5.6%
Single-family detached	73.8%
Large apartment buildings	4.1%
Mobile homes	1.4%
Median rooms	4.7
Avg household size (owned)	3.55

Year built

Era	%
2020 or later	0.1%
2010–2019	1.9%
2000–2009	4.8%
1990–1999	5.8%
1980–1989	12.5%
1970–1979	9.4%
1960–1969	14.6%
1950–1959	23.3%
1940–1949	15.3%
1939 or earlier	12.1%

Bedrooms

Size	% of units
No bedroom (studio)	2.1%
1 bedroom	11.2%
2 bedrooms	32.7%
3 bedrooms	31.4%
4 bedrooms	18.1%
5+ bedrooms	4.5%

Vehicles per household

Vehicles	% of households
No vehicle	6.3%
1 vehicle	25.1%
2 vehicles	33.1%
3 or more	35.6%

Heating fuel

Fuel type	%
Utility gas	67.4%
Electricity	26.0%
Propane / LP gas	1.8%
Fuel oil	0.1%
Solar	0.4%
No fuel used	4.1%

Households & families

Household type	Count	%
Married-couple family	9,145	55.6%
Cohabiting couple	517	3.1%
Male householder, no spouse	2,569	15.6%
Female householder, no spouse	4,227	25.7%
Households with children under 18	5,807	35.3%
Households with seniors (65+)	7,138	43.4%
Average household size	3.56

Marital status

Status	Male	Female
Never married	41.4%	32.6%
Married	49.4%	47.5%
Separated	1.3%	1.9%
Widowed	2.3%	10.4%
Divorced	5.6%	7.6%

Education

Less than 9th grade 21.1%

Some HS, no diploma 10.7%

HS graduate 25.1%

Some college, no degree 13.5%

Associate's degree 6.5%

Bachelor's degree 18.6%

Graduate / professional 4.5%

Metric	%
HS diploma or higher	68.2%
Bachelor's or higher	23.1%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	703	5.3%
Kindergarten	753	5.7%
Elementary school	3,957	29.7%
High school	3,453	26.0%
College / grad school	4,436	33.3%

Employment

Industry of employment

Education & healthcare 18.2%

Manufacturing 11.7%

Arts, food & hospitality 11.7%

Retail trade 11.4%

Professional & management 9.2%

Transportation & utilities 7.8%

Other services 7.3%

Construction 6.7%

Public administration 5.7%

Finance & real estate 5.6%

Wholesale trade 2.6%

Information 1.4%

Agriculture & mining 0.7%

Occupation

Category	%
Management, business & arts	28.1%
Service	21.8%
Sales & office	24.9%
Natural resources & construction	7.5%
Production & transportation	17.7%

Employment type

Type	%
Private sector	77.7%
Government	13.2%
Self-employed	8.7%
Unpaid family workers	0.4%

Commute

Method	%
Drive alone	76.9%
Carpool	10.9%
Public transit	1.5%
Walk	0.8%
Work from home	7.8%
Other means	2.0%
Avg commute (minutes)	28.8

Poverty

All people 11.7%

Under 18 years 13.1%

18 and over 11.4%

Married-couple families 8.2%

Female-led households 11.2%

Income support

Source	% of households
Social Security	33.5%
Retirement income	13.3%
Supplemental Security	12.8%
Cash public assistance	4.1%
Food stamps / SNAP	8.3%

Health indicators

Condition	%
Obesity	21.9%
High blood pressure	28.6%
High cholesterol	31.1%
Diabetes	12.6%
Heart disease	5.5%
Stroke	3.0%
Asthma	7.4%
Arthritis	16.8%
Kidney disease	2.8%
Pulmonary disease	5.1%
Cancer	4.2%

Behavior / access	%
Smoking	11.7%
Binge drinking	12.0%
No physical activity	27.6%
Less than 7 hrs sleep	34.8%
Depression	12.5%
Fair or poor health	17.8%
Poor mental health	13.3%
Poor physical health	10.0%
No health insurance	17.7%
Visited doctor (checkup)	63.7%
Visited dentist	52.5%
Cholesterol screening	89.3%
Teeth loss	12.0%

Veterans & disability

Veterans	Count	%
Civilian veterans	755	1.6%

Disability	%
Any disability	8.6%
Under 18	1.6%
18–64 years	5.5%
65 and over	26.2%

Health insurance coverage

Type	%
Private insurance	50.0%
Public insurance	49.3%
No insurance	6.0%
Uninsured under 19	2.4%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	56,527	95.1%
Spanish	26,571	47.0%
Other Indo-European	4,332	7.7%
Asian & Pacific Islander	127	0.2%
Other languages	22,105	39.1%

Place of birth & citizenship

Origin	Count	%
Native born (US)	26,548	44.7%
Born in same state	26,130	44.0%
Born in different state	24,325	40.9%
Foreign born	418	0.7%
Naturalized citizen	32,862	55.3%
Not a US citizen	21,409	65.1%

Ancestry

Ancestry	Count	%
Arab	1,941	3.3%
Italian	332	0.6%
Polish	110	0.2%
French	110	0.2%

Ancestry	Count	%
English	39	0.1%
German	17	0%
Dutch	17	0%
Norwegian	13	0%

Technology access

Metric	% of households
Computer access	27.7%
Internet access	95.0%

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

Frequently asked questions about ZIP code 91770

What part of Rosemead is ZIP code 91770?

ZIP code 91770 covers a portion of Rosemead, California, within Los Angeles County.

What county is ZIP code 91770 in?

ZIP code 91770 falls within Los Angeles County, California.

Is Spanish widely spoken in ZIP code 91770?

Approximately 47% of households in ZIP code 91770 speak Spanish as a primary language.

What is the typical home value in ZIP code 91770?

The median home value in ZIP code 91770 is $673,800.

What is the population of ZIP code 91770?

ZIP code 91770 has an estimated population of 59,410 residents, with a density of 9,106 people per square mile.

What is the median household income in ZIP code 91770?

The median household income in ZIP code 91770 is $70,863, below the national median of ~$75,000.

What timezone is ZIP code 91770 in?

ZIP code 91770 observes the PST timezone.