Kilbourne is a village in Mason County, Illinois, United States.

[4] Illinois Route 97 runs through the east side of the village, leading north 11 miles (18 km) to Havana, the county seat, and southeast 14 miles (23 km) to Petersburg.

According to the U.S. Census Bureau, Kilbourne has a total area of 0.89 square miles (2.31 km2), all land.

There were 159 housing units at an average density of 149.7 per square mile (57.8/km2).

26.5% of all households were made up of individuals, and 12.2% had someone living alone who was 65 years of age or older.