Wilsonville is a village in Macoupin County, Illinois, United States.

[3] Illinois Route 138 passes through the northwest side of the village, leading northeast 3 miles (5 km) to Mount Clare and west 7 miles (11 km) to Bunker Hill.

Carlinville, the Macoupin county seat, is 17 miles (27 km) to the north.

[1] The West Fork of Cahokia Creek runs through a 50-foot-deep (15 m) ravine on the western edge of the village, flowing south to Cahokia Creek, a west-running direct tributary of the Mississippi River.

30.1% of all households were made up of individuals, and 20.9% had someone living alone who was 65 years of age or older.