SeaTac, WA ZIP Codes
SeaTac, Washington has 4 ZIP codes: 4 for street addresses (, , and ).
Your street decides which one you use.
Which SeaTac 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?
SeaTac ZIP code map
Tap or point to an area to see its ZIP code.Full-size map
Dashed line: SeaTac city limits.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).
All SeaTac ZIP codes by type
| ZIP | Type and post office or station |
|---|---|
| 98158 | street delivery; mail may be addressed to Seattle Riverton Heights |
| 98168 | street delivery; mail may be addressed to Seattle Riverton Heights |
| 98188 | street delivery; mail may be addressed to Seattle Riverton Heights |
| 98198 | street delivery; mail may be addressed to Seattle Des Moines |
ZIP codes from nearby towns that reach into SeaTac
- 98148, mailing town Seattle, covers 9 percent of SeaTac
Why your mail may say SeaTac when you live outside it
SeaTac ZIP codes also cover Tukwila, Des Moines and Burien, so a letter addressed to SeaTac can go to a home outside the city limits.
The reverse happens too: parts of SeaTac use 98148, 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.
SeaTac ZIP code questions
What is the main ZIP code for SeaTac?
98158, the ZIP code of the main Riverton Heights post office at 15250 32nd Ave S.
What county is SeaTac in?
King County.
ZIP codes for towns near SeaTac
More towns near SeaTac: Seattle, Bellevue, Issaquah, Tacoma, Sammamish, Kirkland, Puyallup, Redmond, University Place.
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