Caldwell
- County:
- Canyon County
- County Seat:
- Yes
- Area (mi²):
- 25.396
- State:
- Idaho
Caldwell is a city located in Canyon County, Idaho. Caldwell has a 2026 population of 73,088. It is also the county seat of Canyon County. Caldwell is currently growing at a rate of 6.37% annually and its population has increased by 20.32% since the most recent census, which recorded a population of 60,743 in 2020.