Cascade
- County:
- Valley County
- County Seat:
- Yes
- Area (mi²):
- 4.124
- State:
- Idaho
Cascade is a city located in Valley County, Idaho. Cascade has a 2026 population of 1,026. It is also the county seat of Valley County. Cascade is currently growing at a rate of 1.08% annually and its population has increased by 2.5% since the most recent census, which recorded a population of 1,001 in 2020.