Richfield
- County:
- Lincoln County
- County Seat:
- No
- Area (mi²):
- 0.656
- State:
- Idaho
Richfield is a city located in Lincoln County, Idaho. Richfield has a 2026 population of 476. Richfield is currently growing at a rate of 1.93% annually and its population has increased by 11.21% since the most recent census, which recorded a population of 428 in 2020.