8 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 49953 | Ontonagon | 2,261 |
| 49912 | Bruce Crossing | 851 |
| 49925 | Ewen | 643 |
| 49948 | Mass City | 558 |
| 49971 | White Pine | 404 |
| 49960 | Rockland | 294 |
| 49910 | Bergland | 254 |
| 49929 | Greenland | 218 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 8 ZCTAs in Ontonagon County, Michigan (US Census).