🇺🇸 United States ZIP Code

STANDARD

90604

Whittier

ZIP Code 90604 is a standard zip code serving Whittier, Whittier, California (CA), in Los Angeles County, United States. It has an estimated population of 39,407 with a median household income of $65,570. The area falls within the America/Los_Angeles timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: California (CA)
County: Los Angeles
City: Whittier
Timezone: America/Los_Angeles

Coordinates

Latitude: 33.929900
Longitude: -118.012100

Geographic Details

Land Area: 4.26 mi²
Population Density: 9248.0 people per mi² (95th percentile)
Bounding Box: 33.948669°N, 33.916999°S, -117.976495°E, -118.041665°W

With 39,407 residents spread across 4.26 square miles, this area has a population density of 9248.0 people per square mile.

Demographics

39,407

Population

90th percentile

$65,570

Median Income

80th percentile

$362,800

Median Home Value

90th percentile

4.26 mi²

Land Area

The median household income in 90604 is $65,570, and the median home value is $362,800. This places the area in the top 25% nationally for household income.

Housing

12,326

Total Units

11,932

Occupied Units

96.8%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in Whittier, CA.

90601

Whittier

90602

Whittier

90603

Whittier

90605

Whittier

90606

Whittier

90607

Whittier

90608

Whittier

90609

Whittier

90610

Whittier

Similar ZIP Codes in California

ZIP codes with similar median household income in California.

91042

Tujunga

$57,500

93560

Rosamond

$59,142

92008

Carlsbad

$63,449

90403

Santa Monica

$71,424

93546

Mammoth Lakes

$70,607

93907

Salinas

$68,497

93561

Tehachapi

$57,433

90041

Los Angeles

$63,770

Frequently Asked Questions

What information is available for each ZIP code?

Each ZIP code page shows city, state, county, geographic coordinates, timezone, population, median household income, median home value, housing units, land area, population density, commute time, educational attainment, area codes, and ZIP code type (Standard, PO Box, or Unique).

What are the different types of ZIP codes?

There are three types of ZIP codes: Standard (residential and commercial delivery areas), PO Box (assigned to post office box sections), and Unique (assigned to a single high-volume address like a government agency or large company). Standard ZIP codes are the most common.

How often is ZIP code data updated?

ZIP code assignments are updated quarterly by the USPS. Demographic data comes from the US Census Bureau's American Community Survey (ACS), which releases new 5-year estimates annually. ZipFYI updates its data to reflect the latest available information.

What is population density and why does it matter?

Population density measures the number of people per square mile in a ZIP code area. It helps identify urban vs. rural areas, affects real estate values, impacts service availability, and is used in market analysis. Dense urban ZIP codes may have 50,000+ people per square mile.

How are ZIP code boundaries determined?

ZIP code boundaries are determined by the USPS based on mail delivery routes, not political or geographic boundaries. They follow carrier routes and may cross city, county, or even state lines. Boundaries can change when the USPS reorganizes delivery operations.

What does median household income tell me about a ZIP code?

Median household income is the middle value when all household incomes in a ZIP code are sorted. Half of households earn more and half earn less. It is a better indicator of typical earnings than average income, which can be skewed by very high or very low outliers.