6 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 49935 | Iron River | 5,943 |
| 49920 | Crystal Falls | 4,207 |
| 49915 | Caspian | 576 |
| 49927 | Gaastra | 390 |
| 49902 | Alpha | 210 |
| 49903 | Amasa | 194 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 6 ZCTAs in Iron County, Michigan (US Census).