| ZIP Code | ZIP Code Place Name | County | ZIP Code Type |
|---|---|---|---|
| 98857 | Warden | Grant County | Standard |
| 99032 | Sprague | Lincoln County | Standard |
| 99105 | Benge | Adams County | Standard |
| 99125 | Endicott | Whitman County | Standard |
| 99159 | Odessa | Lincoln County | Standard |
| 99169 | Ritzville | Adams County | Standard |
| 99326 | Connell | Franklin County | Standard |
| 99333 | Hooper | Whitman County | PO Box |
| 99341 | Lind | Adams County | Standard |
| 99344 | Othello | Adams County | Standard |
| 99371 | Washtucna | Adams County | Standard |