Kennewick, WA ZIP Codes
Kennewick, Washington has 3 ZIP codes: 3 for street addresses (, and ).
Your street decides which one you use.
Which Kennewick 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?
Kennewick ZIP code map
Tap or point to an area to see its ZIP code.Full-size map
Dashed line: Kennewick city limits.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).
All Kennewick ZIP codes by type
| ZIP | Type and post office or station |
|---|---|
| 99336 | street delivery Kennewick |
| 99337 | street delivery Pasco Sorting and Delivery Center |
| 99338 | street delivery Pasco Sorting and Delivery Center |
Why your mail may say Kennewick when you live outside it
Kennewick ZIP codes also cover Finley, so a letter addressed to Kennewick can go to a home outside the city limits.
A ZIP code does not set your city, school district or tax. Benton County property records show which city you are in.
Kennewick ZIP code questions
What is the main ZIP code for Kennewick?
99336, the ZIP code of the main Kennewick post office at 525 S Auburn St.
What county is Kennewick in?
Benton County.
ZIP codes for towns near Kennewick
More towns near Kennewick: Lewiston, Spokane, Spokane Valley, Post Falls, Coeur d'Alene, Graham, South Hill, Puyallup, 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