Filer
- County:
- Twin Falls County
- County Seat:
- No
- Area (mi²):
- 1.469
- State:
- Idaho
Filer is a city located in Twin Falls County, Idaho. Filer has a 2026 population of 3,040. Filer is currently growing at a rate of 1.84% annually and its population has increased by 9.08% since the most recent census, which recorded a population of 2,787 in 2020.