ZIP CodesZIP codes in King County, Washington
King County, Washington has 120 ZIP codes in this list, from 98001 to 98288. They cover 33 places, among them Seattle, Bellevue, Kent and Renton.
Nothing in this county matches.
The ZIP code areas of King County add up to about 2,523 square miles of land (6,533 sq km) as the Census Bureau draws them. The largest is 98022 (Enumclaw), with 727 square miles.
Places with more than one code here: Seattle (59 codes), Bellevue (7 codes), Kent (7 codes).
Using these codes
- In an address, the ZIP code comes last, after the city and the two-letter state: Auburn, WA 98001.
- Tap a ZIP code to open it in the look-up, with a copy button for the address line.
- A code can cross a county line, and one town can have several codes. The table shows the main place of each code.
- "No area" means the Census Bureau draws no area for that code. Such codes are usually for post office boxes or a single building.
Places and counties: GeoNames. Areas: U.S. Census Bureau, 2024 ZIP Code Tabulation Areas. Checked in November 2026. This site is not connected with the United States Postal Service; for mailing, confirm the address with USPS.