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Cascade County Montana ☎ +1 406-761-5036 Last Updated: 07/05/2025 |
| Cascade County is a county located in the U.S. state of Montana. As of the 2020 census, the population was 84,414. Its county seat is Great Falls. Cascade County is a mix of rolling plains and part of the Rocky Mountains, Little Belt and Highwood Mountains and the Adel Mountains volcanic field. Part of the Lewis & Clark National Forest sits within the county’s borders. | |
| Black Eagle Falls, Rainbow Falls, the submerged Colter Falls, Crooked Falls and the Great Falls of the Missouri all provide scenic views as water drops a total of 550 feet. Hydroelectric power dams on the falls generate electricity and provide economic stimulus to the area. | |