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US ZIP Code Profile

ZIP Code 98155
Seattle, Washington

ZIP code 98155 is in Seattle, located in King County, Washington, within the Seattle-Tacoma-Bellevue metro area. Its 2020 Census population was 35,948. The estimated median adjusted gross income per tax return is $74,594, and about 16% of filers report $200,000 or more.

2020 Population
35,948
Census ZCTA
County
King
FIPS 53033
Median income (est.)
$74,594
IRS SOI 2022
Land Area
7.554 mi²
+ 0.677 mi² water

01Location & Geography

Authoritative geographic identifiers from the U.S. Census Bureau, ANSI, and FIPS standards.

Primary CitySeattle, WA
CountyKing County (FIPS 53033)
StateWashington (FIPS 53)
Metro Area (MSA)Seattle-Tacoma-Bellevue, WA Metro Area (42660)
Census Region / DivisionWest Region · Pacific Division
Coordinates47.754414, -122.300476
Land / Water Area7.554 mi² land · 0.677 mi² water

02Income & Economics

Distribution of the 18,250 individual tax returns filed in 98155 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
18.2%
$25K–$50K
16.9%
$50K–$75K
15.2%
$75K–$100K
10.8%
$100K–$200K
22.9%
$200K+
16.1%
The $200,000+ bracket accounts for 52% of 98155's total adjusted gross income, from 16% of returns — a concentration that drives the gap between the median ($74,594) and the average.
Estimated median = median adjusted gross income per tax return, interpolated from IRS SOI brackets. Differs from U.S. Census household income.

03Income Over Time

Year-over-year change in 98155's IRS income metrics, 2020–2022.

Median income (2021→2022)
$74,594
▲ 3.3%
Filers earning $200K+
16.1%
▲ 0.7 pt
Total filers
18,250
▲ 1.3%
GET /zipc/v2/zipcodes/98155/soi?year=… $66K 2020 $72K 2021 $75K 2022
Median = adjusted gross income per return, interpolated from IRS SOI brackets. Figures are nominal (not inflation-adjusted).

04Population Trend

Decennial U.S. Census population for the 98155 ZCTA.

2000
33,914
 
2010
32,778
▼ -3.3%
2020
35,948
▲ +9.7%

05Nearby ZIP Codes — Live Radius Search

Drag the slider to filter ZIP codes by distance from 98155. Powered by the same radius endpoint developers call from the API.

GET /zipc/v2/radius

ZIP codes within range of 98155

Seattle and its immediate neighbors, sorted by distance.

3 mi
GET /zipc/v2/distance

Distance from 98155 to any ZIP

Enter a 5-digit ZIP to calculate the distance.

06USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number547616
City AliasesForest Park, Lake Forest Park, North City, Seattle, Shoreline, Lk Forest Park, Lk Forest Pk

07Frequently Asked Questions

What county is ZIP code 98155 in?

ZIP code 98155 is in King County, Washington (county FIPS code 53033).

What city is ZIP code 98155?

The primary USPS city for 98155 is Seattle, WA.

What metro area (MSA) is 98155 in?

98155 is part of the Seattle-Tacoma-Bellevue, WA Metro Area (MSA code 42660).

What is the population of ZIP code 98155?

The 2020 Census population of 98155 was 35,948 residents.

What is the median income in ZIP code 98155?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 98155 is about $74,594, with around 16% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.