18 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 49931 | Houghton | 10,475 |
| 49913 | Calumet | 7,510 |
| 49930 | Hancock | 7,405 |
| 49916 | Chassell | 2,865 |
| 49945 | Lake Linden | 2,729 |
| 49905 | Atlantic Mine | 2,281 |
| 49958 | Pelkie | 911 |
| 49922 | Dollar Bay | 842 |
| 49934 | Hubbell | 772 |
| 49965 | Toivola | 544 |
| 49963 | South Range | 515 |
| 49955 | Painesdale | 499 |
| 49967 | Trout Creek | 383 |
| 49921 | Dodgeville | 336 |
| 49917 | Copper City | 326 |
| 49952 | Nisula | 111 |
| 49961 | Sidnaw | 104 |
| 49942 | Kearsarge | 55 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 18 ZCTAs in Houghton County, Michigan (US Census).