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US ZIP Code Profile

ZIP Code 98028
Kenmore, Washington

ZIP code 98028 is in Kenmore, located in King County, Washington, within the Seattle-Tacoma-Bellevue metro area. Its 2020 Census population was 23,914. The estimated median adjusted gross income per tax return is $92,065, and about 25% of filers report $200,000 or more.

2020 Population
23,914
Census ZCTA
County
King
FIPS 53033
Median income (est.)
$92,065
IRS SOI 2022
Land Area
5.636 mi²
+ 0.76 mi² water

01Location & Geography

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

Primary CityKenmore, WA
CountyKing County (FIPS 53033)
StateWashington (FIPS 53)
Metro Area (MSA)Seattle-Tacoma-Bellevue, WA Metro Area (42660)
Census Region / DivisionWest Region · Pacific Division
Coordinates47.755665, -122.24806
Land / Water Area5.636 mi² land · 0.76 mi² water

02Income & Economics

Distribution of the 11,810 individual tax returns filed in 98028 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
16.9%
$25K–$50K
13.9%
$50K–$75K
12.6%
$75K–$100K
9.7%
$100K–$200K
22.0%
$200K+
24.9%
The $200,000+ bracket accounts for 65% of 98028's total adjusted gross income, from 25% of returns — a concentration that drives the gap between the median ($92,065) 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 98028's IRS income metrics, 2020–2022.

Median income (2021→2022)
$92,065
▲ 2.0%
Filers earning $200K+
24.9%
▲ 1.0 pt
Total filers
11,810
▲ 2.2%
GET /zipc/v2/zipcodes/98028/soi?year=… $80K 2020 $90K 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 98028 ZCTA.

2000
18,165
 
2010
20,419
▲ +12.4%
2020
23,914
▲ +17.1%

05Nearby ZIP Codes — Live Radius Search

Drag the slider to filter ZIP codes by distance from 98028. Powered by the same radius endpoint developers call from the API.

GET /zipc/v2/radius

ZIP codes within range of 98028

Kenmore and its immediate neighbors, sorted by distance.

3 mi
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Distance from 98028 to any ZIP

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06USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypeBranch
Carrier Route SortD
USPS Finance Number540784
City AliasesBothell, Kenmore

07Frequently Asked Questions

What county is ZIP code 98028 in?

ZIP code 98028 is in King County, Washington (county FIPS code 53033).

What city is ZIP code 98028?

The primary USPS city for 98028 is Kenmore, WA.

What metro area (MSA) is 98028 in?

98028 is part of the Seattle-Tacoma-Bellevue, WA Metro Area (MSA code 42660).

What is the population of ZIP code 98028?

The 2020 Census population of 98028 was 23,914 residents.

What is the median income in ZIP code 98028?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 98028 is about $92,065, 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.