West City is a village in Franklin County, Illinois, adjacent to the county seat of Benton. The population was 656 at the 2020 census. In the late 19th century, West City was a small settlement adjoining Benton on the west. In the early 20th century many immigrants from Poland, Lithuania, and England settled in the West City area to work in the numerous co…West City is a village in Franklin County, Illinois, adjacent to the county seat of Benton. The population was 656 at the 2020 census. In the late 19th century, West City was a small settlement adjoining Benton on the west. In the early 20th century many immigrants from Poland, Lithuania, and England settled in the West City area to work in the numerous coal mines.