Bluffs is a village in Scott County, Illinois, United States. The population was 748 at the 2000 census. It was briefly the location of the WJJY TV Mast, the tallest structure built to that date in Illinois.Bluffs is part of the Jacksonville Micropolitan Statistical Area.Bluffs is located at 39°44′58″N 90°32′6″W / 39.74944°N 90.53500°W / 39.74944; -90.53500.According to the 2010 census, Bluffs has a total area of 0.89 square miles, all land.As of the census of 2000, there were 748 people, 307 households, and 210 families residing in the village. The population density was 736.9 people per square mile. There were 330 housing units at an average density of 325.1 per square mile. The racial makeup of the village was 99.60% White, 0.27% Asian, 0.13% from other races.There were 307 households out of which 36.2% had children under the age of 18 living with them, 52.4% were married couples living together, 12.1% had a female householder with no husband present, and 31.3% were non-families.