| Official Zip Code Name | Mackay |
| Zip Code State | Idaho |
| Primary County: | Custer |
| Area Code | 208 |
| Current Population: | 37081 |
| Racial Majority: | White 62.49% |
| Median Household Income | $55618 |
| Average Adjusted Gross Income | $89060 |
| Time Zone: | 7 |
| Elevation Range | 8864 ft. |
| Area | 1124.153 Sqm. |
| Coordinates(Y,X) | 43.922334, -113.889482 |