91377 ZIP Code — Oak Park, CA

Ventura County, California

ZIP code 91377 is located in Oak Park, California, within Ventura County. It covers approximately 5.40 square miles and serves a population of 13,627 residents. This is a standard ZIP code in the Pacific (PT) timezone, served by area code 818.

About ZIP code 91377

The housing stock consists of a mix of housing types. Most homes were built in the 1980s, giving the area an established character. Median home value is $927,400. Owner-occupancy sits near the national average at 71%.

The gap between median ($150,898) and mean household income suggests income inequality — a small number of higher earners pull the average up. The poverty rate of 6% is below the national average.

The dominant occupation class is management, business, and professional, with professional and management as the leading industry. The average commute of 34 minutes is near the national average. Remote work is prevalent — 25% of workers work from home.

Educational attainment is high — 61% of residents hold a bachelor's degree or higher, well above the national average of 33%.

Overall, ZIP code 91377 reflects a community defined by a highly educated population and a high rate of remote workers.

13,627

population

5.40

sq mi land

Standard

ZIP type

Pacific (PT)

timezone

91377 ZIP code map

Cities in ZIP code 91377

Below are the cities the US Postal Service accepts for ZIP code 91377. Using any city not on this list may result in mail delivery delays.

City	Status
Oak Park	Acceptable
Oak Park	Preferred

Nearby ZIP codes

91301 Agoura Hills (3.1 mi) 91362 Thousand Oaks (3.2 mi) 93064 Brandeis (4 mi) 91307 West Hills (5.1 mi) 93099 Simi Valley (6.6 mi) 91360 Thousand Oaks (6.9 mi) 91361 Westlake Village (7 mi) 93065 Simi Valley (7.3 mi) 91302 Calabasas (7.4 mi) 91304 Canoga Park (8.2 mi) 93063 Simi Valley (8.5 mi) 91367 Woodland Hills (8.6 mi)

Demographics updated 06/2026

Population
Total population	13,627
Population density	2,524 / sq mi
State FIPS	06
County FIPS	111

Geography
Land area	5.40 sq mi
Water area	0.00 sq mi
Latitude	34.1882
Longitude	-118.7648
Timezone	Pacific (PT)
Area code	818

Total population by age

Gender

Race & ethnicity

Economics updated 06/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	17.9%	26.9%	32.6%
$50k – $100k	18.6%	28.4%	27.7%
$100k – $200k	32.5%	30.5%	26.4%
Over $200k	31.0%	14.2%	13.3%

Demographics & statistics

13,627

Population

2,524

People per sq mi

42.1

Median age

$150,898

Median household income

$75,542

Per capita income

$927,400

Median home value

$2,963

Median monthly rent

71.3%

Home ownership

5.6%

Poverty rate

5.3%

Unemployment

3,793

Housing units

61.3%

Bachelor's or higher

Age distribution

Male Female

386

Under 5

424

300

5–9

330

579

10–14

636

486

15–19

535

289

20–24

317

495

25–34

545

976

35–44

1,073

983

45–54

1,081

553

55–59

609

415

60–64

457

719

65–74

791

170

75–84

187

139

85+

152

← Male

Female →

Age summary

Group	Count	%
Under 18	3,423	25.1%
18 and over	10,204	74.9%
65 and over	2,158	15.8%
Median age	42.1 years

Race & ethnicity

White 71.7%

Asian 18%

Two or more races 5%

Hispanic or Latino 4%

Other race 0.8%

Native Hawaiian / Pacific Islander 0.4%

Black or African American 0.2%

Group	Count	%
White	10,172	71.7%
Asian	2,547	18%
Two or more races	708	5%
Hispanic or Latino	562	4%
Other race	110	0.8%
Native Hawaiian / Pacific Islander	56	0.4%
Black or African American	28	0.2%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	17.9%	26.9%	32.6%
$50k – $100k	18.6%	28.4%	27.7%
$100k – $200k	32.5%	30.5%	26.4%
Over $200k	31.0%	14.2%	13.3%

Under $10k 5.4%

$10k–$15k 1.1%

$15k–$25k 1.5%

$25k–$35k 3.5%

$35k–$50k 3.7%

$50k–$75k 8.6%

$75k–$100k 8.6%

$100k–$150k 17.4%

$150k–$200k 16.3%

$200k+ 34.0%

Range	% of households
Under $10k	5.4%
$10k–$15k	1.1%
$15k–$25k	1.5%
$25k–$35k	3.5%
$35k–$50k	3.7%
$50k–$75k	8.6%
$75k–$100k	8.6%
$100k–$150k	17.4%
$150k–$200k	16.3%
$200k+	34.0%
Median income	$150,898

Housing

Home values

Under $50k 1.1%

$50k–$100k 0.2%

$100k–$150k 0.2%

$150k–$200k 0.1%

$200k–$300k 2.0%

$300k–$500k 3.9%

$500k–$1M 51.4%

$1M+ 41.1%

Housing overview

Metric	Value
Median home value	$927,400
Median rent / month	$2,963
Owner occupied	71.3%
Renter occupied	28.7%
Vacant	4.1%
Single-family detached	63.3%
Large apartment buildings	3.4%
Mobile homes	0.7%
Median rooms	6.0
Avg household size (owned)	2.75

Year built

Era	%
2020 or later	0.0%
2010–2019	0.0%
2000–2009	4.5%
1990–1999	26.6%
1980–1989	41.9%
1970–1979	23.5%
1960–1969	1.8%
1950–1959	0.8%
1940–1949	0.6%
1939 or earlier	0.2%

Bedrooms

Size	% of units
No bedroom (studio)	1.4%
1 bedroom	7.8%
2 bedrooms	21.2%
3 bedrooms	30.1%
4 bedrooms	29.1%
5+ bedrooms	10.4%

Vehicles per household

Vehicles	% of households
No vehicle	1.8%
1 vehicle	30.4%
2 vehicles	46.1%
3 or more	21.7%

Heating fuel

Fuel type	%
Utility gas	83.1%
Electricity	14.2%
Propane / LP gas	0.9%
Solar	0.8%
No fuel used	0.9%

Households & families

Household type	Count	%
Married-couple family	3,218	64.2%
Cohabiting couple	144	2.9%
Male householder, no spouse	427	8.5%
Female householder, no spouse	1,226	24.4%
Households with children under 18	1,911	38.1%
Households with seniors (65+)	1,476	29.4%
Average household size	2.72

Marital status

Status	Male	Female
Never married	25.7%	24.2%
Married	65.5%	55.6%
Separated	0.3%	0.8%
Widowed	0.7%	7.3%
Divorced	7.8%	12.0%

Education

Less than 9th grade 0.7%

Some HS, no diploma 0.9%

HS graduate 6.5%

Some college, no degree 20.2%

Associate's degree 10.5%

Bachelor's degree 32.9%

Graduate / professional 28.4%

Metric	%
HS diploma or higher	98.4%
Bachelor's or higher	61.3%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	271	7.6%
Kindergarten	165	4.6%
Elementary school	1,174	33.0%
High school	1,081	30.4%
College / grad school	865	24.3%

Employment

Industry of employment

Professional & management 24.8%

Education & healthcare 17.0%

Finance & real estate 15.4%

Retail trade 10.0%

Manufacturing 8.1%

Information 6.3%

Arts, food & hospitality 6.3%

Public administration 3.4%

Other services 2.7%

Wholesale trade 2.3%

Construction 1.8%

Transportation & utilities 1.4%

Agriculture & mining 0.5%

Occupation

Category	%
Management, business & arts	61.4%
Service	8.2%
Sales & office	23.7%
Natural resources & construction	2.3%
Production & transportation	4.4%

Employment type

Type	%
Private sector	82.6%
Government	8.4%
Self-employed	8.4%
Unpaid family workers	0.6%

Commute

Method	%
Drive alone	68.9%
Carpool	4.4%
Public transit	0.0%
Walk	0.3%
Work from home	25.3%
Other means	1.1%
Avg commute (minutes)	33.8

Poverty

All people 5.6%

Under 18 years 3.5%

18 and over 6.2%

Married-couple families 3.4%

Female-led households 2.8%

Income support

Source	% of households
Social Security	24.7%
Retirement income	22.1%
Supplemental Security	1.2%
Cash public assistance	2.9%
Food stamps / SNAP	1.2%

Health indicators

Condition	%
Obesity	24.9%
High blood pressure	25.5%
High cholesterol	31.5%
Diabetes	6.9%
Heart disease	4.1%
Stroke	1.8%
Asthma	9.2%
Arthritis	18.2%
Kidney disease	2.0%
Pulmonary disease	4.0%
Cancer	6.0%

Behavior / access	%
Smoking	8.3%
Binge drinking	18.4%
No physical activity	12.9%
Less than 7 hrs sleep	27.6%
Depression	16.9%
Fair or poor health	8.1%
Poor mental health	12.4%
Poor physical health	7.2%
No health insurance	5.8%
Visited doctor (checkup)	69.1%
Visited dentist	77.7%
Cholesterol screening	93.7%
Teeth loss	5.4%

Veterans & disability

Veterans	Count	%
Civilian veterans	249	2.4%

Disability	%
Any disability	5.9%
Under 18	1.4%
18–64 years	2.7%
65 and over	24.8%

Health insurance coverage

Type	%
Private insurance	85.6%
Public insurance	21.3%
No insurance	2.2%
Uninsured under 19	2.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	12,817	94.1%
Spanish	739	5.8%
Other Indo-European	63	0.5%
Asian & Pacific Islander	246	1.9%
Other languages	418	3.3%

Place of birth & citizenship

Origin	Count	%
Native born (US)	10,405	76.4%
Born in same state	10,266	75.3%
Born in different state	6,852	50.3%
Foreign born	139	1.0%
Naturalized citizen	3,222	23.6%
Not a US citizen	1,786	55.4%

Ancestry

Ancestry	Count	%
French	1,086	8%
Italian	759	5.6%
Polish	562	4.1%
Arab	480	3.5%
English	207	1.5%

Ancestry	Count	%
Irish	67	0.5%
German	30	0.2%
Dutch	24	0.2%
Norwegian	22	0.2%

Technology access

Metric	% of households
Computer access	36.8%
Internet access	97.5%

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

Frequently asked questions about ZIP code 91377

What city is ZIP code 91377 in?

ZIP code 91377 is primarily assigned to Oak Park, California.

What county is ZIP code 91377 in?

ZIP code 91377 falls within Ventura County, California.

How educated is the population of ZIP code 91377?

61% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

What is the median household income in ZIP code 91377?

The median household income in ZIP code 91377 is $150,898, above the national median of ~$75,000.

What is the typical home value in ZIP code 91377?

The median home value in ZIP code 91377 is $927,400.

What is the population of ZIP code 91377?

ZIP code 91377 has an estimated population of 13,627 residents, with a density of 2,526 people per square mile.

What timezone is ZIP code 91377 in?

ZIP code 91377 observes the PST timezone.