Issaquah, WA ZIP Codes
Issaquah, Washington has 2 ZIP codes: 2 for street addresses ( and ).
Your street decides which one you use.
Which Issaquah ZIP code is my address in?
Street ranges from the Census Bureau, 2026. PO box and organization ZIP codes are not found by street. A new street may be missing: address not found?
Issaquah ZIP code map
Tap or point to an area to see its ZIP code.Full-size map
Dashed line: Issaquah city limits.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).
All Issaquah ZIP codes by type
| ZIP | Type and post office or station |
|---|---|
| 98027 | street delivery Issaquah |
| 98029 | street delivery Issaquah |
Why your mail may say Issaquah when you live outside it
Issaquah ZIP codes also cover Mirrormont, so a letter addressed to Issaquah can go to a home outside the city limits.
A ZIP code does not set your city, school district or tax. King County property records show which city you are in.
Issaquah ZIP code questions
What is the main ZIP code for Issaquah?
98027, the ZIP code of the main Issaquah post office at 400 NW Gilman Blvd.
What county is Issaquah in?
King County.
ZIP codes for towns near Issaquah
More towns near Issaquah: SeaTac, Burien, Seattle, Des Moines, Bothell, Auburn, Shoreline, Federal Way, Lynnwood.
Sources and last checked
USPS ZIP Locale Detail (October 1, 2026), GeoNames (CC BY 4.0), U.S. Census Bureau, HUD-USPS crosswalk.
Checked October 20, 2026. Sources · How we build our lists · Corrections