| Official Zip Code Name | Gaastra |
| Zip Code State | Michigan |
| Primary County: | Iron |
| Area Code | 906 |
| Current Population: | 37081 |
| Racial Majority: | White 62.49% |
| Median Household Income | $55618 |
| Average Adjusted Gross Income | $89060 |
| Time Zone: | 6 |
| Elevation Range | 1524 ft. |
| Area | 16.562 Sqm. |
| Coordinates(Y,X) | 46.031214, -88.562052 |