4 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 59825 | Clinton | 2,434 |
| 59858 | Philipsburg | 1,494 |
| 59832 | Drummond | 962 |
| 59837 | Hall | 639 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 4 ZCTAs in Granite County, Montana (US Census).