| Official Zip Code Name | Walnut Creek |
| Zip Code State | California |
| Primary County: | Contra Costa |
| Area Code | 341/510/707/925 |
| Current Population: | 37081 |
| Racial Majority: | White 62.49% |
| Median Household Income | $55618 |
| Average Adjusted Gross Income | $89060 |
| Time Zone: | 8 |
| Elevation Range | 329 ft. |
| Area | 20.614 Sqm. |
| Coordinates(Y,X) | 37.899384, -121.992084 |