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US ZIP Code Profile

ZIP Code 98034
Kirkland, Washington

ZIP code 98034 is in Kirkland, located in King County, Washington, within the Seattle-Tacoma-Bellevue metro area. Its 2020 Census population was 51,464. The estimated median adjusted gross income per tax return is $91,994, and about 23% of filers report $200,000 or more.

2020 Population
51,464
Census ZCTA
County
King
FIPS 53033
Median income (est.)
$91,994
IRS SOI 2022
Land Area
9.058 mi²
+ 2.337 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
Coordinates47.716152, -122.21684
Land / Water Area9.058 mi² land · 2.337 mi² water

02Income & Economics

Distribution of the 26,550 individual tax returns filed in 98034 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
16.1%
$25K–$50K
14.1%
$50K–$75K
13.0%
$75K–$100K
10.1%
$100K–$200K
23.5%
$200K+
23.3%
The $200,000+ bracket accounts for 65% of 98034's total adjusted gross income, from 23% of returns — a concentration that drives the gap between the median ($91,994) 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 98034's IRS income metrics, 2020–2022.

Median income (2021→2022)
$91,994
▲ 6.4%
Filers earning $200K+
23.3%
▲ 1.1 pt
Total filers
26,550
▲ 2.2%
GET /zipc/v2/zipcodes/98034/soi?year=… $75K 2020 $86K 2021 $92K 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 98034 ZCTA.

2000
40,380
 
2010
40,407
▲ +0.1%
2020
51,464
▲ +27.4%

05Nearby ZIP Codes — Live Radius Search

Drag the slider to filter ZIP codes by distance from 98034. Powered by the same radius endpoint developers call from the API.

GET /zipc/v2/radius

ZIP codes within range of 98034

Kirkland and its immediate neighbors, sorted by distance.

3 mi
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Distance from 98034 to any ZIP

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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 AliasesJuanita, Kingsgate, Kirkland, Totem Lake

07Frequently Asked Questions

What county is ZIP code 98034 in?

ZIP code 98034 is in King County, Washington (county FIPS code 53033).

What city is ZIP code 98034?

The primary USPS city for 98034 is Kirkland, WA.

What metro area (MSA) is 98034 in?

98034 is part of the Seattle-Tacoma-Bellevue, WA Metro Area (MSA code 42660).

What is the population of ZIP code 98034?

The 2020 Census population of 98034 was 51,464 residents.

What is the median income in ZIP code 98034?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 98034 is about $91,994, with around 23% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.