| Official Zip Code Name | Rock Island |
| Zip Code State | Washington |
| Primary County: | Douglas |
| Area Code | 509 |
| Current Population: | 37081 |
| Racial Majority: | White 62.49% |
| Median Household Income | $55618 |
| Average Adjusted Gross Income | $89060 |
| Time Zone: | 8 |
| Elevation Range | 2069 ft. |
| Area | 76.25 Sqm. |
| Coordinates(Y,X) | 47.359524, -120.034611 |