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US ZIP Code Profile

ZIP Code 98109
Seattle, Washington

ZIP code 98109 is in Seattle, located in King County, Washington, within the Seattle-Tacoma-Bellevue metro area. Its 2020 Census population was 34,551. The estimated median adjusted gross income per tax return is $115,426, and about 25% of filers report $200,000 or more.

2020 Population
34,551
Census ZCTA
County
King
FIPS 53033
Median income (est.)
$115,426
IRS SOI 2022
Land Area
1.994 mi²
+ 0.427 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
Coordinates47.631863, -122.34427
Land / Water Area1.994 mi² land · 0.427 mi² water

02Income & Economics

Distribution of the 21,450 individual tax returns filed in 98109 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
8.9%
$25K–$50K
11.8%
$50K–$75K
13.2%
$75K–$100K
11.5%
$100K–$200K
30.1%
$200K+
24.6%
The $200,000+ bracket accounts for 63% of 98109's total adjusted gross income, from 25% of returns — a concentration that drives the gap between the median ($115,426) 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 98109's IRS income metrics, 2020–2022.

Median income (2021→2022)
$115,426
▲ 9.1%
Filers earning $200K+
24.6%
▲ 0.1 pt
Total filers
21,450
▲ 6.9%
GET /zipc/v2/zipcodes/98109/soi?year=… $98K 2020 $106K 2021 $115K 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 98109 ZCTA.

2000
16,018
 
2010
20,715
▲ +29.3%
2020
34,551
▲ +66.8%

05Nearby ZIP Codes — Live Radius Search

Drag the slider to filter ZIP codes by distance from 98109. Powered by the same radius endpoint developers call from the API.

GET /zipc/v2/radius

ZIP codes within range of 98109

Seattle and its immediate neighbors, sorted by distance.

3 mi
GET /zipc/v2/distance

Distance from 98109 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 AliasesQueen Anne, Seattle

07Frequently Asked Questions

What county is ZIP code 98109 in?

ZIP code 98109 is in King County, Washington (county FIPS code 53033).

What city is ZIP code 98109?

The primary USPS city for 98109 is Seattle, WA.

What metro area (MSA) is 98109 in?

98109 is part of the Seattle-Tacoma-Bellevue, WA Metro Area (MSA code 42660).

What is the population of ZIP code 98109?

The 2020 Census population of 98109 was 34,551 residents.

What is the median income in ZIP code 98109?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 98109 is about $115,426, with around 25% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.