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US ZIP Code Profile

ZIP Code 98033
Kirkland, Washington

ZIP code 98033 is in Kirkland, located in King County, Washington, within the Seattle-Tacoma-Bellevue metro area. Its 2020 Census population was 41,763. The estimated median adjusted gross income per tax return is $144,891, and about 39% of filers report $200,000 or more.

2020 Population
41,763
Census ZCTA
County
King
FIPS 53033
Median income (est.)
$144,891
IRS SOI 2022
Land Area
9.209 mi²
+ 1.833 mi² water

01Location & Geography

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

Primary CityKirkland, WA
CountyKing County (FIPS 53033)
StateWashington (FIPS 53)
Metro Area (MSA)Seattle-Tacoma-Bellevue, WA Metro Area (42660)
Census Region / DivisionWest Region · Pacific Division
Coordinates47.675983, -122.19358
Land / Water Area9.209 mi² land · 1.833 mi² water

02Income & Economics

Distribution of the 20,590 individual tax returns filed in 98033 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
13.7%
$25K–$50K
10.2%
$50K–$75K
9.3%
$75K–$100K
7.8%
$100K–$200K
20.0%
$200K+
39.0%
The $200,000+ bracket accounts for 85% of 98033's total adjusted gross income, from 39% of returns — a concentration that drives the gap between the median ($144,891) 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 98033's IRS income metrics, 2020–2022.

Median income (2021→2022)
$144,891
▲ 0.6%
Filers earning $200K+
39.0%
▼ 0.1 pt
Total filers
20,590
▲ 1.7%
GET /zipc/v2/zipcodes/98033/soi?year=… $125K 2020 $144K 2021 $145K 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 98033 ZCTA.

2000
30,393
 
2010
34,338
▲ +13.0%
2020
41,763
▲ +21.6%

05Nearby ZIP Codes — Live Radius Search

Drag the slider to filter ZIP codes by distance from 98033. Powered by the same radius endpoint developers call from the API.

GET /zipc/v2/radius

ZIP codes within range of 98033

Kirkland and its immediate neighbors, sorted by distance.

3 mi
GET /zipc/v2/distance

Distance from 98033 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 Number544144
City AliasesHoughton, Juanita, Kirkland, Redmond, Totem Lake

07Frequently Asked Questions

What county is ZIP code 98033 in?

ZIP code 98033 is in King County, Washington (county FIPS code 53033).

What city is ZIP code 98033?

The primary USPS city for 98033 is Kirkland, WA.

What metro area (MSA) is 98033 in?

98033 is part of the Seattle-Tacoma-Bellevue, WA Metro Area (MSA code 42660).

What is the population of ZIP code 98033?

The 2020 Census population of 98033 was 41,763 residents.

What is the median income in ZIP code 98033?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 98033 is about $144,891, with around 39% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.