90603 ZIP Code — Whittier, CA

Los Angeles County, California

ZIP code 90603 is located in Whittier, California, within Los Angeles County. It covers approximately 3.16 square miles and serves a population of 20,883 residents. This is a standard ZIP code in the Pacific (PT) timezone, served by area code 562.

About ZIP code 90603

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 $738,800. Owner-occupancy is high at 79%, well above the national average.

The gap between median ($117,324) and mean household income suggests income inequality — a small number of higher earners pull the average up. The poverty rate of 4% is below the national average. 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 32 minutes is near the national average.

Educational attainment is near the national average, with 34% of residents holding a bachelor's degree or higher.

Overall, ZIP code 90603 reflects a community defined by high homeownership and a significant Social Security-dependent population.

20,883

population

3.16

sq mi land

Standard

ZIP type

Pacific (PT)

timezone

90603 ZIP code map

Cities in ZIP code 90603

Below are the cities the US Postal Service accepts for ZIP code 90603. Using any city not on this list may result in mail delivery delays.

City	Status
Whittier	Preferred

Nearby ZIP codes

90605 Whittier (1.2 mi) 90604 Whittier (1.3 mi) 90631 La Habra (2.3 mi) 90602 Whittier (2.5 mi) 90639 La Mirada (3 mi) 90638 La Mirada (3.3 mi) 91745 Hacienda Heights (3.8 mi) 90670 Santa Fe Springs (4 mi) 90601 Whittier (4.3 mi) 90601 Whittier (4.3 mi) 90606 Whittier (4.6 mi) 90621 Buena Park (4.9 mi)

Demographics updated 06/2026

Population
Total population	20,883
Population density	6,609 / sq mi
State FIPS	06
County FIPS	037

Geography
Land area	3.16 sq mi
Water area	0.00 sq mi
Latitude	33.9471
Longitude	-117.9948
Timezone	Pacific (PT)
Area code	562

Total population by age

Gender

Race & ethnicity

Economics updated 06/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	23.3%	36.2%	32.6%
$50k – $100k	22.5%	28.2%	27.7%
$100k – $200k	42.7%	24.5%	26.4%
Over $200k	11.5%	11.0%	13.3%

Demographics & statistics

20,883

Population

6,609

People per sq mi

40.9

Median age

$117,324

Median household income

$45,903

Per capita income

$738,800

Median home value

$2,228

Median monthly rent

78.8%

Home ownership

4.0%

Poverty rate

5.1%

Unemployment

5,188

Housing units

33.8%

Bachelor's or higher

Age distribution

Male Female

513

Under 5

539

592

5–9

623

781

10–14

821

457

15–19

481

642

20–24

675

1,259

25–34

1,323

1,467

35–44

1,543

1,338

45–54

1,407

818

55–59

860

635

60–64

667

809

65–74

851

462

75–84

485

407

85+

428

← Male

Female →

Age summary

Group	Count	%
Under 18	4,471	21.4%
18 and over	16,412	78.6%
65 and over	3,442	16.5%
Median age	40.9 years

Race & ethnicity

White 36.9%

Hispanic or Latino 27.9%

Other race 17.6%

Two or more races 11.4%

Asian 4.4%

American Indian / Alaska Native 0.8%

Native Hawaiian / Pacific Islander 0.5%

Black or African American 0.4%

Group	Count	%
White	10,689	36.9%
Hispanic or Latino	8,096	27.9%
Other race	5,104	17.6%
Two or more races	3,315	11.4%
Asian	1,285	4.4%
American Indian / Alaska Native	236	0.8%
Native Hawaiian / Pacific Islander	150	0.5%
Black or African American	104	0.4%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	23.3%	36.2%	32.6%
$50k – $100k	22.5%	28.2%	27.7%
$100k – $200k	42.7%	24.5%	26.4%
Over $200k	11.5%	11.0%	13.3%

Under $10k 2.2%

$10k–$15k 1.4%

$15k–$25k 2.5%

$25k–$35k 5.3%

$35k–$50k 6.2%

$50k–$75k 12.6%

$75k–$100k 11.5%

$100k–$150k 21.8%

$150k–$200k 17.4%

$200k+ 19.1%

Range	% of households
Under $10k	2.2%
$10k–$15k	1.4%
$15k–$25k	2.5%
$25k–$35k	5.3%
$35k–$50k	6.2%
$50k–$75k	12.6%
$75k–$100k	11.5%
$100k–$150k	21.8%
$150k–$200k	17.4%
$200k+	19.1%
Median income	$117,324

Housing

Home values

Under $50k 3.0%

$50k–$100k 1.6%

$100k–$150k 0.3%

$200k–$300k 1.5%

$300k–$500k 3.9%

$500k–$1M 74.4%

$1M+ 15.4%

Housing overview

Metric	Value
Median home value	$738,800
Median rent / month	$2,228
Owner occupied	78.8%
Renter occupied	21.2%
Vacant	1.9%
Single-family detached	82.8%
Large apartment buildings	9.2%
Mobile homes	1.5%
Median rooms	5.7
Avg household size (owned)	3.24

Year built

Era	%
2020 or later	0.0%
2010–2019	1.4%
2000–2009	2.6%
1990–1999	2.4%
1980–1989	3.0%
1970–1979	6.9%
1960–1969	16.6%
1950–1959	60.4%
1940–1949	3.6%
1939 or earlier	3.1%

Bedrooms

Size	% of units
No bedroom (studio)	3.2%
1 bedroom	6.5%
2 bedrooms	9.8%
3 bedrooms	59.2%
4 bedrooms	17.9%
5+ bedrooms	3.4%

Vehicles per household

Vehicles	% of households
No vehicle	2.6%
1 vehicle	17.0%
2 vehicles	42.3%
3 or more	38.1%

Heating fuel

Fuel type	%
Utility gas	81.1%
Electricity	13.4%
Propane / LP gas	1.9%
Solar	1.0%
No fuel used	2.5%

Households & families

Household type	Count	%
Married-couple family	3,697	57.5%
Cohabiting couple	515	8.0%
Male householder, no spouse	806	12.5%
Female householder, no spouse	1,410	21.9%
Households with children under 18	2,280	35.5%
Households with seniors (65+)	2,406	37.4%
Average household size	3.21

Marital status

Status	Male	Female
Never married	36.4%	31.5%
Married	51.6%	44.4%
Separated	1.5%	0.3%
Widowed	3.7%	9.2%
Divorced	6.7%	14.7%

Education

Less than 9th grade 4.2%

Some HS, no diploma 3.4%

HS graduate 25.6%

Some college, no degree 24.0%

Associate's degree 9.2%

Bachelor's degree 20.4%

Graduate / professional 13.4%

Metric	%
HS diploma or higher	92.5%
Bachelor's or higher	33.8%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	254	4.5%
Kindergarten	355	6.2%
Elementary school	2,112	37.1%
High school	876	15.4%
College / grad school	2,095	36.8%

Employment

Industry of employment

Education & healthcare 28.8%

Retail trade 10.7%

Manufacturing 10.0%

Arts, food & hospitality 9.1%

Professional & management 8.0%

Construction 6.9%

Finance & real estate 5.5%

Wholesale trade 5.3%

Transportation & utilities 5.2%

Public administration 5.1%

Other services 2.6%

Information 2.5%

Agriculture & mining 0.1%

Occupation

Category	%
Management, business & arts	45.1%
Service	12.2%
Sales & office	27.2%
Natural resources & construction	6.9%
Production & transportation	8.6%

Employment type

Type	%
Private sector	72.6%
Government	21.9%
Self-employed	5.3%
Unpaid family workers	0.3%

Commute

Method	%
Drive alone	77.8%
Carpool	10.0%
Public transit	0.6%
Walk	0.9%
Work from home	9.2%
Other means	1.5%
Avg commute (minutes)	32.1

Poverty

All people 4.0%

Under 18 years 1.6%

18 and over 4.7%

Married-couple families 0.8%

Female-led households 1.0%

Income support

Source	% of households
Social Security	33.3%
Retirement income	25.3%
Supplemental Security	5.6%
Cash public assistance	2.2%
Food stamps / SNAP	2.7%

Health indicators

Condition	%
Obesity	26.5%
High blood pressure	25.4%
High cholesterol	29.0%
Diabetes	8.5%
Heart disease	5.1%
Stroke	2.3%
Asthma	8.3%
Arthritis	17.9%
Kidney disease	2.6%
Pulmonary disease	4.5%
Cancer	6.2%

Behavior / access	%
Smoking	8.0%
Binge drinking	18.3%
No physical activity	17.0%
Less than 7 hrs sleep	29.9%
Depression	15.9%
Fair or poor health	11.7%
Poor mental health	13.5%
Poor physical health	8.5%
No health insurance	13.0%
Visited doctor (checkup)	64.6%
Visited dentist	69.4%
Cholesterol screening	93.0%
Teeth loss	7.9%

Veterans & disability

Veterans	Count	%
Civilian veterans	578	3.5%

Disability	%
Any disability	10.9%
Under 18	1.9%
18–64 years	6.4%
65 and over	41.0%

Health insurance coverage

Type	%
Private insurance	76.6%
Public insurance	27.3%
No insurance	4.5%
Uninsured under 19	1.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	19,831	95.0%
Spanish	1,352	6.8%
Other Indo-European	1,011	5.1%
Asian & Pacific Islander	85	0.4%
Other languages	256	1.3%

Place of birth & citizenship

Origin	Count	%
Native born (US)	18,141	86.9%
Born in same state	17,960	86.0%
Born in different state	15,867	76.0%
Foreign born	181	0.9%
Naturalized citizen	2,742	13.1%
Not a US citizen	2,289	83.5%

Ancestry

Ancestry	Count	%
Italian	1,434	6.9%
Arab	1,394	6.7%
French	1,321	6.3%
Polish	121	0.6%
English	112	0.5%

Ancestry	Count	%
Irish	38	0.2%
German	12	0.1%
Norwegian	8	0%
Dutch	5	0%

Technology access

Metric	% of households
Computer access	30.8%
Internet access	93.6%

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

Frequently asked questions about ZIP code 90603

What city is ZIP code 90603 in?

ZIP code 90603 is primarily assigned to Whittier, California.

What county is ZIP code 90603 in?

ZIP code 90603 falls within Los Angeles County, California.

What is the typical home value in ZIP code 90603?

The median home value in ZIP code 90603 is $738,800.

What is the median household income in ZIP code 90603?

The median household income in ZIP code 90603 is $117,324, above the national median of ~$75,000.

What is the population of ZIP code 90603?

ZIP code 90603 has an estimated population of 20,883 residents, with a density of 6,602 people per square mile.

What timezone is ZIP code 90603 in?

ZIP code 90603 observes the PST timezone.