6 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 49935 | Iron River | 5,841 |
| 49920 | Crystal Falls | 4,380 |
| 49915 | Caspian | 570 |
| 49927 | Gaastra | 371 |
| 49903 | Amasa | 233 |
| 49902 | Alpha | 215 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 6 ZCTAs in Iron County, Michigan (US Census).