
Sun Prairie
- County:
- Cascade County
- County Seat:
- No
- Area (mi²):
- 5.297
- State:
- Montana
Sun Prairie is a CDP located in Cascade County, Montana. Sun Prairie has a 2025 population of 1,300. Sun Prairie is currently declining at a rate of -1.66% annually and its population has decreased by -19.6% since the most recent census, which recorded a population of 1,617 in 2020.
The average household income in Sun Prairie is $77,750 with a poverty rate of 9.31%. The median age in Sun Prairie is 49.5 years: 50.7 years for males, and 38.3 years for females.