🇺🇸 United States ZIP Code

STANDARD

98023

Federal Way

ZIP Code 98023 is a standard zip code serving Federal Way, Federal Way, Washington (WA), in King County, United States. It has an estimated population of 47,510 with a median household income of $67,906. The area falls within the America/Los_Angeles timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Washington (WA)
County: King
City: Federal Way
Timezone: America/Los_Angeles

Coordinates

Latitude: 47.310400
Longitude: -122.361200

Geographic Details

Land Area: 10.32 mi²
Water Area: 1.39 mi²
Population Density: 4604.0 people per mi² (90th percentile)
Bounding Box: 47.350222°N, 47.263808°S, -122.324272°E, -122.422572°W

With 47,510 residents spread across 10.32 square miles, this area has a population density of 4604.0 people per square mile.

Demographics

47,510

Population

95th percentile

$67,906

Median Income

80th percentile

$265,100

Median Home Value

80th percentile

10.32 mi²

Land Area

The median household income in 98023 is $67,906, and the median home value is $265,100. This places the area in the top 25% nationally for household income.

Housing

18,026

Total Units

16,912

Occupied Units

93.8%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in Federal Way, WA.

98003

Federal Way

98063

Federal Way

98093

Federal Way

Similar ZIP Codes in Washington

ZIP codes with similar median household income in Washington.

98311

Bremerton

$66,706

98221

Anacortes

$60,369

98107

Seattle

$67,566

98685

Vancouver

$77,231

98056

Renton

$70,683

98373

Puyallup

$60,056

98236

Clinton

$64,902

98625

Kalama

$59,654

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.