Altadena ZIP Code List — Los Angeles County, CA

There are 2 unique ZIP codes in Altadena, California. Area code: 626.

ZIP codes

8.26

sq mi land

0.04

sq mi water

626

area code

Altadena, CA ZIP code map

About Altadena, CA

Altadena, California, is a vibrant and charming community located in the heart of Los Angeles County. Known for its historic homes and proximity to the San Gabriel Mountains, it offers a unique blend of suburban tranquility and urban conveniences. With its rich cultural heritage and beautiful scenery, Altadena attracts residents and visitors alike.

Location & geography

Altadena is situated just north of Pasadena and is conveniently located near several major highways. The community is bordered by the Angeles National Forest to the north and is approximately 10 miles northeast of downtown Los Angeles. Spanning an area of 8.26 square miles of land and 0.04 square miles of water, Altadena features a varied terrain that includes hills and parks.

Community & economy

The character of Altadena is marked by its diverse population and community-oriented atmosphere, making it a welcoming place for families and individuals. The local economy is supported by small businesses, retail shops, and service industries, with many residents commuting to nearby Pasadena or Los Angeles for work. Daily life in Altadena is enriched by community events, parks, and local amenities, promoting a close-knit living environment.

Transportation

Altadena is easily accessible via the 210 Freeway, which runs along its southwestern boundary, providing connections to other parts of Los Angeles County. The nearest major airport is the Bob Hope Airport in Burbank, located about 20 miles away, while local transit options include bus services connecting the area to surrounding cities. Additionally, Altadena's layout encourages walking and cycling, enhancing its community feel.

History

Altadena was originally established as a community in the 1880s and quickly became a desirable area for settlers due to its beautiful landscape and favorable climate. With agriculture and tourism as key early industries, it became known for its fruit orchards and Victorian homes. Noteworthy events in Altadena's history include the development of local landmarks, such as the historic Altadena Library and the annual Altadena Recreation & Community Services events.

Did you know?

One surprising fact about Altadena is that it is home to the famous Loma Alta Park, which features stunning views of the San Gabriel Valley. Additionally, the area is famous for its unique homes, including a number of well-preserved historic properties that reflect its architectural heritage.

ZIP codes for Altadena, CA (2)

ZIP code	City	County	Map
91001	Altadena	Los Angeles	View map
91003	Altadena	Los Angeles	View map

Demographics & statistics

36,420

Population

44.5

Median age

$129,030

Median household income

$63,267

Per capita income

$1,002,600

Median home value

$2,160

Median monthly rent

79.2%

Home ownership

7.1%

Poverty rate

7.5%

Unemployment

10,686

Housing units

51.5%

Bachelor's or higher

Age distribution

Male Female

967

Under 5

1,045

938

5–9

1,015

1,107

10–14

1,197

834

15–19

901

744

20–24

805

1,926

25–34

2,083

2,328

35–44

2,516

2,567

45–54

2,776

1,420

55–59

1,535

1,159

60–64

1,253

1,821

65–74

1,968

1,161

75–84

1,256

528

85+

570

← Male

Female →

Age summary

Group	Count	%
Under 18	7,394	20.3%
18 and over	29,026	79.7%
65 and over	7,304	20.1%
Median age	44.5 years

Race & ethnicity

White 36%

Hispanic or Latino 18.1%

Black or African American 17.5%

Other race 11.6%

Two or more races 11%

Asian 5%

American Indian / Alaska Native 0.8%

Group	Count	%
White	16,004	36%
Hispanic or Latino	8,049	18.1%
Black or African American	7,767	17.5%
Other race	5,160	11.6%
Two or more races	4,903	11%
Asian	2,225	5%
American Indian / Alaska Native	352	0.8%

Household income

Under $10k 1.9%

$10k–$15k 1.4%

$15k–$25k 3.9%

$25k–$35k 5.2%

$35k–$50k 6.9%

$50k–$75k 11.5%

$75k–$100k 8.2%

$100k–$150k 17.2%

$150k–$200k 12.1%

$200k+ 31.6%

Range	% of households
Under $10k	1.9%
$10k–$15k	1.4%
$15k–$25k	3.9%
$25k–$35k	5.2%
$35k–$50k	6.9%
$50k–$75k	11.5%
$75k–$100k	8.2%
$100k–$150k	17.2%
$150k–$200k	12.1%
$200k+	31.6%
Median income	$129,030

Housing

Home values

Under $50k 1.0%

$50k–$100k 0.3%

$100k–$150k 0.8%

$200k–$300k 0.6%

$300k–$500k 2.4%

$500k–$1M 44.7%

$1M+ 50.2%

Housing overview

Metric	Value
Median home value	$1,002,600
Median rent / month	$2,160
Owner occupied	79.2%
Renter occupied	20.8%
Vacant	6.5%
Single-family detached	90.0%
Large apartment buildings	2.8%
Mobile homes	0.3%
Median rooms	5.9
Avg household size (owned)	2.89

Year built

Era	%
2020 or later	0.2%
2010–2019	1.7%
2000–2009	1.7%
1990–1999	3.5%
1980–1989	2.7%
1970–1979	4.1%
1960–1969	7.6%
1950–1959	18.6%
1940–1949	24.2%
1939 or earlier	35.9%

Bedrooms

Size	% of units
No bedroom (studio)	1.2%
1 bedroom	5.5%
2 bedrooms	25.4%
3 bedrooms	50.7%
4 bedrooms	13.2%
5+ bedrooms	4.1%

Vehicles per household

Vehicles	% of households
No vehicle	3.5%
1 vehicle	27.8%
2 vehicles	43.0%
3 or more	25.7%

Heating fuel

Fuel type	%
Utility gas	79.9%
Electricity	17.1%
Propane / LP gas	0.2%
Fuel oil	0.2%
Wood	0.5%
Solar	0.3%
No fuel used	1.8%

Households & families

Household type	Count	%
Married-couple family	6,526	52.6%
Cohabiting couple	550	4.4%
Male householder, no spouse	1,425	11.5%
Female householder, no spouse	3,907	31.5%
Households with children under 18	3,899	31.4%
Households with seniors (65+)	4,925	39.7%
Average household size	2.89

Marital status

Status	Male	Female
Never married	36.3%	30.1%
Married	54.0%	44.6%
Separated	0.9%	2.4%
Widowed	3.1%	8.4%
Divorced	5.8%	14.6%

Education

Less than 9th grade 4.8%

Some HS, no diploma 2.9%

HS graduate 13.5%

Some college, no degree 18.2%

Associate's degree 9.0%

Bachelor's degree 26.7%

Graduate / professional 24.8%

Metric	%
HS diploma or higher	92.3%
Bachelor's or higher	51.5%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	589	7.3%
Kindergarten	289	3.6%
Elementary school	3,515	43.3%
High school	1,568	19.3%
College / grad school	2,148	26.5%

Employment

Industry of employment

Education & healthcare 27.8%

Professional & management 18.0%

Arts, food & hospitality 8.8%

Finance & real estate 7.1%

Other services 7.0%

Information 6.7%

Retail trade 5.6%

Public administration 5.3%

Transportation & utilities 4.0%

Construction 3.9%

Manufacturing 3.4%

Wholesale trade 2.0%

Agriculture & mining 0.5%

Occupation

Category	%
Management, business & arts	57.6%
Service	16.6%
Sales & office	14.5%
Natural resources & construction	4.9%
Production & transportation	6.4%

Employment type

Type	%
Private sector	70.7%
Government	16.0%
Self-employed	12.9%
Unpaid family workers	0.5%

Commute

Method	%
Drive alone	67.2%
Carpool	5.8%
Public transit	2.9%
Walk	1.5%
Other means	2.5%
Avg commute (minutes)	27.9

Poverty

All people 7.1%

Under 18 years 8.6%

18 and over 6.8%

Married-couple families 2.2%

Female-led households 13.1%

Income support

Source	% of households
Social Security	34.8%
Retirement income	25.1%
Supplemental Security	3.2%
Cash public assistance	3.2%
Food stamps / SNAP	4.8%

Health indicators

Condition	%
High blood pressure	29.9%
High cholesterol	29.8%
Heart disease	5.1%
Stroke	2.9%
Asthma	9.5%
Arthritis	19.4%
Kidney disease	2.8%
Pulmonary disease	4.9%
Cancer	6.1%

Behavior / access	%
Binge drinking	17.0%
No physical activity	17.3%
Less than 7 hrs sleep	33.0%
Fair or poor health	13.1%
Poor mental health	14.0%
Poor physical health	9.1%
No health insurance	11.3%
Visited doctor (checkup)	67.7%
Visited dentist	67.3%
Cholesterol screening	93.7%
Teeth loss	8.9%

Veterans & disability

Veterans	Count	%
Civilian veterans	1,541	5.3%

Disability	%
Any disability	10.9%
Under 18	1.6%
18–64 years	7.4%
65 and over	30.7%

Health insurance coverage

Type	%
Private insurance	70.6%
Public insurance	37.5%
Uninsured under 19	0.7%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	34,408	94.5%
Spanish	3,022	8.8%
Other Indo-European	2,509	7.3%
Asian & Pacific Islander	158	0.5%
Other languages	330	1.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	29,499	81.0%
Born in same state	29,097	79.9%
Born in different state	20,694	56.8%
Foreign born	402	1.1%
Naturalized citizen	6,921	19.0%
Not a US citizen	4,957	71.6%

Ancestry

Ancestry	Count	%
French	3,075	8.4%
Italian	2,671	7.3%
Arab	443	1.2%
Irish	437	1.2%
English	325	0.9%

Ancestry	Count	%
Polish	314	0.9%
Dutch	198	0.5%
German	149	0.4%
Norwegian	105	0.3%

Technology access

Metric	% of households
Computer access	34.1%
Internet access	97.4%

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

Frequently asked questions

What is the ZIP code for Altadena, CA?

Altadena, CA has one ZIP code: 91001.

What is the main ZIP code for Altadena, CA?

The primary ZIP code for Altadena, CA is 91001. The city uses area code 626 for phone service.

What county is Altadena, CA in?

Altadena is located in Los Angeles County, California.

How many ZIP codes are in Altadena, CA?

Altadena, CA has 1 ZIP code.

What is the ZIP code for the Altadena town center and main commercial district?

The Altadena town center is located in ZIP code 91001, which serves as the primary commercial and civic hub for the community.

What ZIP code covers the Altadena foothills area near the San Gabriel Mountains?

The Altadena foothills region, including residential areas near the mountains, falls within ZIP code 91001, which encompasses all of Altadena.