| Official Zip Code Name | Oak |
| Zip Code State | Nebraska |
| Primary County: | Nuckolls |
| Area Code | 402/531 |
| Current Population: | 37081 |
| Racial Majority: | White 62.49% |
| Median Household Income | $55618 |
| Average Adjusted Gross Income | $89060 |
| Time Zone: | 6 |
| Elevation Range | 1659 ft. |
| Area | 28.273 Sqm. |
| Coordinates(Y,X) | 40.263316, -97.877627 |