Henry is a city in Marshall County, Illinois, United States. The population was 2,320 at the 2020 census. It is part of the Peoria Metropolitan Statistical Area.
Downtown Henry
Marshall County, Illinois
Marshall County is a county located in the U.S. state of Illinois. According to the 2020 census, it had a population of 11,742. Its county seat is Lacon.
Lacon Bridge in the county seat