Hillsboro is a city in and the county seat of Montgomery County, Illinois, United States. The population was 5,902 at the 2020 census. The community was founded in 1823 and incorporated on March 26, 1913.
Country: United States
State: Illinois
County: Montgomery
Elevation: 587 ft (179 m)
Area code: 217
Townships: Hillsboro, East Fork, Butler Grove, Irving
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