🇺🇸 United States ZIP Code

STANDARD

98603

Ariel

ZIP Code 98603 is a standard zip code serving Ariel, Ariel, Washington (WA), in Cowlitz County, United States. It has an estimated population of 1,017 with a median household income of $58,094. The area falls within the America/Los_Angeles timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Washington (WA)
County: Cowlitz
City: Ariel
Timezone: America/Los_Angeles

Coordinates

Latitude: 45.995200
Longitude: -122.467700

Geographic Details

Land Area: 116.80 mi²
Water Area: 5.22 mi²
Population Density: 9.0 people per mi² (10th percentile)
Bounding Box: 46.144670°N, 45.952389°S, -122.245672°E, -122.647270°W

With 1,017 residents spread across 116.80 square miles, this area has a population density of 9.0 people per square mile.

Demographics

1,017

Population

25th percentile

$58,094

Median Income

70th percentile

$240,200

Median Home Value

80th percentile

116.80 mi²

Land Area

The median household income in 98603 is $58,094, and the median home value is $240,200.

Housing

552

Total Units

399

Occupied Units

72.3%

Occupancy Rate

Similar ZIP Codes in Washington

ZIP codes with similar median household income in Washington.

99021

Mead

$61,479

98611

Castle Rock

$57,532

98221

Anacortes

$60,369

98328

Eatonville

$57,199

98672

White Salmon

$52,783

98826

Leavenworth

$49,559

98236

Clinton

$64,902

98248

Ferndale

$58,493

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.