Founded in September 12, 1887, Cascade County is one of 56 counties in the state of Montana. Historically, Cascade County was formed from Chouteau County and Meagher County. The city of Great Falls is the county seat. With FIPS code of 13, Cascade County has a population of 84,511 and area of 2,698 square miles (6,988 km2).
List of all cities in Cascade County, MT alphabetically
| City/Town | Postal Code | Area Code |
| Armington, MT | 59412 | 406 |
| Belt, MT | 59412 | 406 |
| Black Eagle, MT | 59414 | 406 |
| Cascade, MT | 59421 | 406 |
| Fort Shaw, MT | 59443 | 406 |
| Great Falls, MT | 59401 | 406 |
| 59402 | 406 | |
| 59403 | 406 | |
| 59404 | 406 | |
| 59405 | 406 | |
| 59406 | 406 | |
| Malmstrom AFB, MT | 59402 | 406 |
| Monarch, MT | 59463 | 406 |
| Neihart, MT | 59465 | 406 |
| Sand Coulee, MT | 59472 | 406 |
| Simms, MT | 59477 | 406 |
| Stockett, MT | 59480 | 406 |
| Sun River, MT | 59483 | 406 |
| Tracy, MT | 59472 | 406 |
| Ulm, MT | 59485 | 406 |
| Vaughn, MT | 59487 | 406 |
| Wayne, MT | 59412 | 406 |