9 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 49862 | Munising | 4,532 |
| 49816 | Chatham | 720 |
| 49891 | Trenary | 605 |
| 49806 | Au Train | 596 |
| 49884 | Shingleton | 586 |
| 49825 | Eben Junction | 348 |
| 49822 | Deerton | 336 |
| 49839 | Grand Marais | 284 |
| 49826 | Rumely | 103 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 9 ZCTAs in Alger County, Michigan (US Census).