Grant County Washington is covered by a total of 18 ZIP Codes. There are 8 ZIP Codes in Grant County that extend into adjacent counties (Adams County, Benton County, Douglas County, Franklin County, and Lincoln County). Of the ZIP codes within or partially within Grant County there are 15 Standard ZIP Codes and 3 PO Box ZIP Codes.
Click on the ZIP Codes in the interactive map to view more information. The map control in the upper right corner can be used to toggle map layers on and off. The red outline is the border of Grant County and can be turned on and off. Each type of postal code can also be turned on and off.
| ZIP Code | ZIP Code City/Town | ZIP Code Type | |||
|---|---|---|---|---|---|
| Ephrata | Standard | |||
| George | PO Box | |||
| Marlin | Standard | |||
| Moses Lake | Standard | |||
| Quincy | Standard | |||
| Soap Lake | Standard | |||
| Stratford | PO Box | |||
| Warden | Standard | |||
| Wilson Creek | PO Box | |||
| Almira | Standard | |||
| Coulee City | Standard | |||
| Electric City | Standard | |||
| Grand Coulee | Standard | |||
| Hartline | Standard | |||
| Beverly | Standard | |||
| Othello | Standard | |||
| Mattawa | Standard | |||
| Royal City | Standard |