12 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 59729 | Ennis | 2,700 |
| 59749 | Sheridan | 1,919 |
| 59716 | Big Sky | 1,867 |
| 59754 | Twin Bridges | 1,020 |
| 59740 | McAllister | 467 |
| 59735 | Harrison | 391 |
| 59720 | Cameron | 315 |
| 59751 | Silver Star | 284 |
| 59710 | Alder | 265 |
| 59747 | Pony | 155 |
| 59755 | Virginia City | 148 |
| 59745 | Norris | 140 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 12 ZCTAs in Madison County, Montana (US Census).