| Official Zip Code Name | Grainfield |
| Zip Code State | Kansas |
| Primary County: | Gove |
| Area Code | 785 |
| Current Population: | 37081 |
| Racial Majority: | White 62.49% |
| Median Household Income | $55618 |
| Average Adjusted Gross Income | $89060 |
| Time Zone: | 6 |
| Elevation Range | 2801 ft. |
| Area | 175.744 Sqm. |
| Coordinates(Y,X) | 39.067938, -100.480930 |