Mattawa, WA zip code
Mattawa, Washington uses one zip code: 99349. Most of it is in Grant County. Together these zip codes are home to about 8.1K people.
Zip codes
1
Population
8.1K
All zips combined
Largest zip
99349
8,143 residents
Zip codes in Mattawa
| Zip | Type | Population | IncomeMedian income |
|---|---|---|---|
| 99349 | 8,143 | $61,333 |