
Simms
- County:
- Cascade County
- County Seat:
- No
- Area (mi²):
- 7.611
- State:
- Montana
Simms is a CDP located in Cascade County, Montana. Simms has a 2025 population of 323. Simms is currently declining at a rate of -0.62% annually and its population has decreased by -4.44% since the most recent census, which recorded a population of 338 in 2020.
The average household income in Simms is $114,848 with a poverty rate of 0%. The median age in Simms is 39.4 years: 33.6 years for males, and 57.5 years for females.