| Zip Code | City | Population ↓ |
|---|---|---|
| 49862 | Munising | 4,524 |
| 49816 | Chatham | 768 |
| 49806 | Au Train | 621 |
| 49891 | Trenary | 619 |
| 49884 | Shingleton | 567 |
| 49839 | Grand Marais | 309 |
| 49825 | Eben Junction | 278 |
| 49826 | Rumely | 256 |
| 49822 | Deerton | 225 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 9 ZCTAs in Alger County, Michigan (US Census).