Sammamish, WA ZIP Codes
Sammamish, Washington has 2 ZIP codes: 2 for street addresses ( and ).
Your street decides which one you use.
Which Sammamish 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?
Sammamish ZIP code map
Tap or point to an area to see its ZIP code.Full-size map
Dashed line: Sammamish city limits.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).
All Sammamish ZIP codes by type
| ZIP | Type and post office or station |
|---|---|
| 98074 | street delivery Redmond |
| 98075 | street delivery Issaquah |
ZIP codes from nearby towns that reach into Sammamish
- 98029, mailing town Issaquah, covers 10 percent of Sammamish
Why your mail may say Sammamish when you live outside it
A letter addressed to Sammamish can go to a home outside the city limits, because ZIP areas follow delivery routes, not town lines.
The reverse happens too: parts of Sammamish use 98029, which mails under a neighboring town's name.
A ZIP code does not set your city, school district or tax. King County property records show which city you are in.
Sammamish ZIP code questions
What is the main ZIP code for Sammamish?
98074, the ZIP code of the main Redmond post office at 7241 185th Ave NE.
What county is Sammamish in?
King County.
ZIP codes for towns near Sammamish
More towns near Sammamish: Seattle, SeaTac, Kent, Burien, Shoreline, Des Moines, Lynnwood, Edmonds, Auburn.
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