Zip Code 98023
Federal Way, Washington — King County
📍 ZIP code 98023 is in Federal Way, King County, Washington.
ZIP code 98023 is located in Federal Way, King County, Washington. It is a zip code in the Pacific (PST/PDT) Time Zone with an estimated population of 49,593. The area code for ZIP code 98023 is 206.
Quick Answer
Zip code 98023 is in Federal Way, Washington (King County). It has a population of 49,593, median household income of $101,960, and median home value of $545,600.
Population
49,593
Income
$101,960
Home Value
$545,600
Climate
77°F / 37°F
About Zip Code 98023
Zip code 98023 is located in Federal Way, Washington, within King County. Home to approximately 49,593 residents, this area sits at an elevation of 344 ft and falls within the Pacific (PST/PDT) timezone. The local area code is 206.
The median household income is $101,960 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $545,600, and the cost of living index is 155 (55% above the national average of 100).
Summers average a high of 77°F while winters drop to 37°F. The area receives about 41 in of rain and 4 in of snow annually. The zip code covers 10.3 square miles of land area and 1.4 square miles of water.
Key Statistics
49,593
$101,960
$545,600
Pacific (PST/PDT)
206
344 ft
10.3 sq mi
38.9
18,777
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Compare With Nearby Zip Codes
| Metric | 98023 | 98422 | 98003 | 98421 | 98001 | 98354 |
|---|---|---|---|---|---|---|
| City | Federal Way, WA | Fife, WA | Federal Way, WA | Fife, WA | Auburn, WA | Milton, WA |
| Population | 49,593 | 22,126 | 52,210 | 249 | 36,041 | 8,432 |
| Median Income | $101,960 | $115,989 | $70,800 | $0 | $107,218 | $90,361 |
| Home Value | $545,600 | $614,300 | $428,500 | $0 | $538,800 | $510,900 |
| Cost of Living | 155 | 182 | 122 | 100 | 159 | 143 |
| Median Age | 38.9 | 39 | 36.4 | 35.3 | 39.9 | 38 |
Cost of Living
100 = National Average. Federal Way's cost of living is 55% above the national average.
vs. State Avg
Above
Affordability
Expensive
Income-to-Home
5.4x
Demographics
Zip code 98023 has a population of 49,593 people with a median age of 38.9. There are 18,777 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Federal Way (98023) population trend from 2010 to 2024
↑ 32.2%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
77°F
37°F
41 in
4 in
Federal Way experiences mild summers with average highs around 77°F. Winters are mild with lows averaging 37°F. The area receives about 4 in of snow per year.
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Housing & Economy
Median Home Value
$545,600
Median Household Income
$101,960
With 18,777 housing units across 10.3 square miles, 98023 has a housing density of 1,823 units per square mile. The home price-to-income ratio is 5.4x.
Location & Geography
Latitude
47.3115°
Longitude
-122.3628°
Land Area
10.3 sq mi
Water Area
1.4 sq mi
Nearby Zip Codes
Zip codes closest to 98023 (Federal Way, WA) with distances:
All Zip Codes in Federal Way, WA
Other zip codes serving Federal Way:
ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 98023's $101,960. A way to compare Federal Way to economically similar communities elsewhere in the country.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
ZIP Codes with Similar Demographics
The five U.S. ZIP codes whose racial and ethnic composition most closely matches 98023 (Federal Way, WA). Similarity is measured by cosine distance on the five-category ACS demographic vector.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
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People Also Ask
What zip code is Federal Way, Washington?
Federal Way, Washington uses zip code 98023 along with 1 other zip codes.
What county is zip code 98023 in?
Zip code 98023 is located in King County, Washington.
What is the population of zip code 98023?
The population of zip code 98023 is 49,593 with a median age of 38.9.
Is 98023 in Federal Way, Washington?
Yes, zip code 98023 is in Federal Way, King County, Washington. The area code is 206.
Frequently Asked Questions
What city is zip code 98023 in?
Zip code 98023 is in Federal Way, Washington. It is part of King County and uses the Pacific (PST/PDT) timezone.
What is zip code 98023?
Zip code 98023 is a U.S. postal code in Federal Way, Washington (King County). It has a population of 49,593 and covers 10.3 square miles.
What is the population of zip code 98023?
The population of zip code 98023 (Federal Way, WA) is 49,593 with a median age of 38.9. There are approximately 18,777 housing units in this area.
What is the median income in zip code 98023?
The median household income in zip code 98023 (Federal Way, WA) is $101,960 per year. The cost of living index is 155 (100 = national average).
What is the average home price in zip code 98023?
The median home value in zip code 98023 (Federal Way, WA) is $545,600. The cost of living index is 155 compared to the national average of 100.
What county is zip code 98023 in?
Zip code 98023 is located in King County, Washington. The primary city is Federal Way.
What is the area code for zip code 98023?
Zip code 98023 in Federal Way, WA uses area code 206. It is located in the Pacific (PST/PDT) timezone.
Is zip code 98023 a good place to live?
Zip code 98023 (Federal Way, WA) has a cost of living index of 155 (100 = national average), a median household income of $101,960, and median home values of $545,600. The median age is 38.9. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 98023?
The cost of living index for zip code 98023 (Federal Way, WA) is 155, where 100 represents the national average. This area is above the national average. Median home value: $545,600.
What schools serve zip code 98023?
Zip code 98023 in Federal Way, Washington is served by the local school district of King County. For specific school information, check your state's department of education or GreatSchools.org.
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.
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Data Sources
- Population, income, housing, age, and demographics
- U.S. Census Bureau, American Community Survey 5-Year Estimates, 2019-2023 vintage.
- ZIP to city and county mapping
- USPS and HUD-USPS ZIP-County Crosswalk.
- Time zones and area codes
- IANA tz database and NANPA.
- Elevation
- U.S. Geological Survey National Elevation Dataset (NED), via the USGS Elevation Point Query Service. Mapped to each ZCTA centroid coordinates. Last refreshed 2026-05-19.
- Last refreshed
- 2026-05-18.