| Zip Code | City | Population ↓ |
|---|---|---|
| 59801 | Missoula | 30,916 |
| 59808 | Missoula | 23,574 |
| 59802 | Missoula | 19,864 |
| 59803 | Missoula | 18,401 |
| 59804 | Missoula | 8,123 |
| 59847 | Lolo | 6,015 |
| 59821 | Arlee | 2,994 |
| 59834 | Frenchtown | 2,444 |
| 59823 | Bonner | 1,931 |
| 59868 | Seeley Lake | 1,797 |
| 59846 | Huson | 1,377 |
| 59812 | Missoula | 1,181 |
| 59826 | Condon | 518 |
| 59851 | Milltown | 145 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 14 ZCTAs in Missoula County, Montana (US Census).