West Frankfort
- County:
- Franklin County
- County Seat:
- No
- Area (mi²):
- 4.984
- State:
- Illinois
West Frankfort is a city located in Franklin County, Illinois. West Frankfort has a 2026 population of 7,131. West Frankfort is currently declining at a rate of -0.34% annually and its population has decreased by -1.75% since the most recent census, which recorded a population of 7,258 in 2020.