Grant County, Washington ZIP Codes
- ZIP records
14 - Cities represented
14 - Sum of listed ZIP population estimates
97,918
Population sum includes positive estimates in these ZIP records; it is not an official county population.
Top ZIP Codes by Population
| Rank | ZIP Code | City | Population estimate |
|---|---|---|---|
| 1 | 98837 | Moses Lake | 49,455 |
| 2 | 98848 | Quincy | 12,854 |
| 3 | 98823 | Ephrata | 12,188 |
| 4 | 99349 | Mattawa | 8,143 |
| 5 | 98851 | Soap Lake | 4,437 |
| 6 | 98857 | Warden | 4,062 |
| 7 | 99357 | Royal City | 3,843 |
| 8 | 99321 | Beverly | 1,047 |
| 9 | 99123 | Electric City | 977 |
| 10 | 99135 | Hartline | 395 |
Cities in Grant County
- Beverly
- Electric City
- Ephrata
- George
- Hartline
- Marlin
- Mattawa
- Moses Lake
- Quincy
- Royal City
- Soap Lake
- Stratford
- Warden
- Wilson Creek
ZIP Directory
- ZIP 98823
- ZIP 98824
- ZIP 98832
- ZIP 98837
- ZIP 98848
- ZIP 98851
- ZIP 98853
- ZIP 98857
- ZIP 98860
- ZIP 99123
- ZIP 99135
- ZIP 99321
- ZIP 99349
- ZIP 99357
Browse all ZIP data for Washington
Methodology: Records are grouped by the source file's listed county and state. Population sums add positive ZIP-level estimates and are not official county totals; city counts use distinct city labels in the source.