Castaic ZIP Codes — Los Angeles County, CA

There are 2 unique ZIP codes in Castaic, California. Area code: 805/820.

ZIP codes

103.60

sq mi land

0.79

sq mi water

805/820

area code

Castaic, CA ZIP code map

About Castaic, CA

Castaic is a charming city located in California, nestled within the expansive landscape of Los Angeles County. It boasts a rich tapestry of natural beauty and offers a gateway to various recreational activities. Known for its picturesque views and outdoor attractions, Castaic serves as a peaceful refuge just north of major urban centers.

Location & geography

Castaic is strategically situated approximately 25 miles northwest of downtown Los Angeles, making it an attractive location for commuters. Nearby cities include Valencia, which is about 7 miles to the south, Santa Clarita, located roughly 12 miles to the south, and the historic town of Saugus, approximately 9 miles away. The city covers a vast land area of 207.20 square miles, complemented by a modest water area of 1.58 square miles, featuring a variety of terrain and open spaces.

Community & economy

The community of Castaic is characterized by its tight-knit atmosphere and a mix of suburban and rural lifestyles, offering residents a tranquil living environment away from the hustle and bustle of city life. Industries in the area range from agriculture to tourism, with many residents working in the nearby cities, contributing to a diverse local economy. Daily life in Castaic often includes outdoor activities, community events, and family-oriented attractions, emphasizing a strong sense of community and camaraderie among residents.

Transportation

Castaic is accessible via several key highways, including Interstate 5, which runs through the city, facilitating travel to major destinations in Southern California. The nearest major airports are Bob Hope Airport (Burbank) and Los Angeles International Airport (LAX), providing residents and visitors with convenient air travel options. Public transit options may include local bus services connecting to neighboring cities, enhancing accessibility.

History

Castaic's history dates back to its founding as a settlement in the early 20th century, gradually evolving into the vibrant community it is today. Historically, agriculture played a significant role in the local economy, with ranching and farming being predominant industries. Over the years, key events such as the construction of Castaic Lake, a popular recreational spot, have significantly shaped the city’s growth and appeal.

Did you know?

An interesting fact about Castaic is that it is home to Castaic Lake, one of the largest reservoirs in Southern California, providing opportunities for fishing, boating, and camping. Additionally, the city's proximity to the Angeles National Forest offers residents stunning landscapes and outdoor adventures right at their doorstep.

ZIP codes for Castaic, CA (2)

ZIP code	City	County	Map
91310	Castaic	Los Angeles	View map
91384	Castaic	Los Angeles	View map

Demographics & statistics

27,652

Population

35.1

Median age

$127,416

Median household income

$39,648

Per capita income

$645,600

Median home value

$1,788

Median monthly rent

84.9%

Home ownership

4.1%

Poverty rate

5.8%

Unemployment

6,180

Housing units

31.6%

Bachelor's or higher

Age distribution

Male Female

888

Under 5

638

997

5–9

716

1,207

10–14

866

1,050

15–19

753

1,123

20–24

807

2,769

25–34

1,987

2,351

35–44

1,687

2,165

45–54

1,555

1,141

55–59

819

906

60–64

650

995

65–74

714

417

75–84

300

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	6,449	23.3%
18 and over	21,203	76.7%
65 and over	2,577	9.3%
Median age	35.1 years

Race & ethnicity

White 43.3%

Hispanic or Latino 20.6%

Two or more races 14.5%

Other race 9.7%

Asian 6.9%

Black or African American 3.9%

American Indian / Alaska Native 1.2%

Group	Count	%
White	15,078	43.3%
Hispanic or Latino	7,168	20.6%
Two or more races	5,046	14.5%
Other race	3,373	9.7%
Asian	2,392	6.9%
Black or African American	1,343	3.9%
American Indian / Alaska Native	413	1.2%

Household income

Under $10k 2.1%

$10k–$15k 1.4%

$15k–$25k 3.3%

$25k–$35k 3.4%

$35k–$50k 5.1%

$50k–$75k 9.3%

$75k–$100k 9.1%

$100k–$150k 26.6%

$150k–$200k 16.4%

$200k+ 23.4%

Range	% of households
Under $10k	2.1%
$10k–$15k	1.4%
$15k–$25k	3.3%
$25k–$35k	3.4%
$35k–$50k	5.1%
$50k–$75k	9.3%
$75k–$100k	9.1%
$100k–$150k	26.6%
$150k–$200k	16.4%
$200k+	23.4%
Median income	$127,416

Housing

Home values

Under $50k 1.2%

$50k–$100k 1.3%

$100k–$150k 1.6%

$150k–$200k 1.8%

$200k–$300k 2.3%

$300k–$500k 13.8%

$500k–$1M 70.9%

$1M+ 7.2%

Housing overview

Metric	Value
Median home value	$645,600
Median rent / month	$1,788
Owner occupied	84.9%
Renter occupied	15.1%
Vacant	2.0%
Single-family detached	85.6%
Large apartment buildings	5.8%
Mobile homes	4.6%
Median rooms	6.0
Avg household size (owned)	3.43

Year built

Era	%
2020 or later	0.0%
2010–2019	0.6%
2000–2009	29.8%
1990–1999	21.2%
1980–1989	36.4%
1970–1979	5.8%
1960–1969	1.0%
1950–1959	3.0%
1940–1949	0.9%
1939 or earlier	1.4%

Bedrooms

Size	% of units
No bedroom (studio)	1.6%
1 bedroom	3.0%
2 bedrooms	12.4%
3 bedrooms	41.5%
4 bedrooms	32.5%
5+ bedrooms	9.0%

Vehicles per household

Vehicles	% of households
No vehicle	2.0%
1 vehicle	15.8%
2 vehicles	40.3%
3 or more	41.9%

Heating fuel

Fuel type	%
Utility gas	80.7%
Electricity	15.5%
Propane / LP gas	1.7%
Fuel oil	0.2%
Wood	0.3%
Solar	1.0%
No fuel used	0.3%

Households & families

Household type	Count	%
Married-couple family	4,907	69.1%
Cohabiting couple	246	3.5%
Male householder, no spouse	956	13.5%
Female householder, no spouse	994	14.0%
Households with children under 18	3,078	43.3%
Households with seniors (65+)	1,946	27.4%
Average household size	3.31

Marital status

Status	Male	Female
Never married	45.6%	27.9%
Married	44.7%	57.0%
Separated	1.8%	0.6%
Widowed	1.0%	7.1%
Divorced	6.9%	7.5%

Education

Less than 9th grade 5.5%

Some HS, no diploma 9.9%

HS graduate 20.8%

Some college, no degree 23.0%

Associate's degree 9.3%

Bachelor's degree 22.6%

Graduate / professional 9.0%

Metric	%
HS diploma or higher	84.7%
Bachelor's or higher	31.6%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	382	5.3%
Kindergarten	294	4.1%
Elementary school	2,896	40.5%
High school	1,756	24.6%
College / grad school	1,824	25.5%

Employment

Industry of employment

Education & healthcare 22.0%

Professional & management 10.5%

Finance & real estate 9.8%

Manufacturing 9.2%

Public administration 8.3%

Retail trade 7.6%

Arts, food & hospitality 7.5%

Transportation & utilities 6.7%

Construction 5.8%

Information 4.4%

Other services 4.2%

Wholesale trade 3.4%

Agriculture & mining 0.6%

Occupation

Category	%
Management, business & arts	43.6%
Service	16.9%
Sales & office	22.9%
Natural resources & construction	7.6%
Production & transportation	9.1%

Employment type

Type	%
Private sector	72.2%
Government	20.1%
Self-employed	7.7%
Unpaid family workers	0.1%

Commute

Method	%
Drive alone	75.7%
Carpool	12.4%
Public transit	0.7%
Walk	0.3%
Other means	1.2%
Avg commute (minutes)	33.2

Poverty

All people 4.1%

Under 18 years 4.1%

18 and over 4.1%

Married-couple families 4.2%

Female-led households 4.1%

Income support

Source	% of households
Social Security	25.1%
Retirement income	21.5%
Supplemental Security	4.1%
Cash public assistance	2.2%
Food stamps / SNAP	4.4%

Health indicators

Condition	%
High blood pressure	20.8%
High cholesterol	23.5%
Heart disease	3.3%
Stroke	1.7%
Asthma	8.4%
Arthritis	12.4%
Kidney disease	1.8%
Pulmonary disease	3.7%
Cancer	3.6%

Behavior / access	%
Binge drinking	23.0%
No physical activity	16.5%
Less than 7 hrs sleep	33.3%
Fair or poor health	11.4%
Poor mental health	15.2%
Poor physical health	7.7%
No health insurance	16.6%
Visited doctor (checkup)	58.4%
Visited dentist	63.1%
Cholesterol screening	88.6%
Teeth loss	7.9%

Veterans & disability

Veterans	Count	%
Civilian veterans	837	4.0%

Disability	%
Any disability	10.3%
Under 18	5.1%
18–64 years	8.3%
65 and over	35.3%

Health insurance coverage

Type	%
Private insurance	76.3%
Public insurance	26.0%
Uninsured under 19	4.5%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	26,126	94.5%
Spanish	2,527	9.7%
Other Indo-European	1,719	6.6%
Asian & Pacific Islander	140	0.5%
Other languages	654	2.5%

Place of birth & citizenship

Origin	Count	%
Native born (US)	22,074	79.8%
Born in same state	21,783	78.8%
Born in different state	18,295	66.2%
Foreign born	291	1.1%
Naturalized citizen	5,578	20.2%
Not a US citizen	3,890	69.7%

Ancestry

Ancestry	Count	%
French	2,002	7.2%
Italian	1,574	5.7%
Arab	1,113	4%
Polish	440	1.6%
Irish	197	0.7%

Ancestry	Count	%
German	184	0.7%
Dutch	142	0.5%
English	104	0.4%
Norwegian	7	0%

Technology access

Metric	% of households
Computer access	25.7%
Internet access	99.0%

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

Frequently asked questions

What ZIP codes does Castaic, CA have?

Castaic, CA has one ZIP code: 91384. Each ZIP code serves a distinct delivery area within the city and surrounding region.