ZIP CodesZIP codes in Grant County, Washington
Grant County, Washington has 16 ZIP codes in this list, from 98823 to 99357. They cover 16 places, among them Ephrata, George, Marlin and Moses Lake.
Nothing in this county matches.
| ZIP code | Place | Land area (sq mi) | Map point |
|---|---|---|---|
| 98823 | Ephrata | 298 | 47.277, -119.534 |
| 98824 | George | 1.0 | 47.079, -119.860 |
| 98832 | Marlin | 196 | 47.301, -119.064 |
| 98837 | Moses Lake | 486 | 47.137, -119.289 |
| 98848 | Quincy | 457 | 47.198, -119.846 |
| 98851 | Soap Lake | 146 | 47.383, -119.486 |
| 98853 | Stratford | 20.6 | 47.427, -119.282 |
| 98857 | Warden | 167 | 46.977, -119.054 |
| 98860 | Wilson Creek | 99.1 | 47.474, -119.185 |
| 99115 | Coulee City | 420 | 47.597, -119.276 |
| 99123 | Electric City | 20.0 | 47.913, -119.043 |
| 99133 | Grand Coulee | 182 | 47.938, -118.998 |
| 99135 | Hartline | 174 | 47.611, -119.084 |
| 99321 | Beverly | 35.1 | 46.848, -119.912 |
| 99349 | Mattawa | 267 | 46.731, -119.778 |
| 99357 | Royal City | 217 | 46.916, -119.582 |
The ZIP code areas of Grant County add up to about 3,187 square miles of land (8,254 sq km) as the Census Bureau draws them. The largest is 98837 (Moses Lake), with 486 square miles.
Using these codes
- In an address, the ZIP code comes last, after the city and the two-letter state: Ephrata, WA 98823.
- Tap a ZIP code to open it in the look-up, with a copy button for the address line.
- A code can cross a county line, and one town can have several codes. The table shows the main place of each code.
- "No area" means the Census Bureau draws no area for that code. Such codes are usually for post office boxes or a single building.
Places and counties: GeoNames. Areas: U.S. Census Bureau, 2024 ZIP Code Tabulation Areas. Checked in November 2026. This site is not connected with the United States Postal Service; for mailing, confirm the address with USPS.