| Official Zip Code Name | Grays Knob |
| Zip Code State | Kentucky |
| Primary County: | Harlan |
| Area Code | 606 |
| Current Population: | 37081 |
| Racial Majority: | White 62.49% |
| Median Household Income | $55618 |
| Average Adjusted Gross Income | $89060 |
| Time Zone: | 5 |
| Elevation Range | 1816 ft. |
| Area | 5.246 Sqm. |
| Coordinates(Y,X) | 36.787677, -83.269782 |