9 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 49862 | Munising | 4,546 |
| 49816 | Chatham | 666 |
| 49884 | Shingleton | 634 |
| 49806 | Au Train | 605 |
| 49891 | Trenary | 548 |
| 49825 | Eben Junction | 328 |
| 49822 | Deerton | 214 |
| 49826 | Rumely | 214 |
| 49839 | Grand Marais | 198 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 9 ZCTAs in Alger County, Michigan (US Census).