Blue Mound is a village in Macon County, Illinois, United States.

[3] Illinois Route 48 passes through the village, leading northeast 14 miles (23 km) to Decatur, the county seat, and southwest the same distance to Taylorville.

According to the U.S. Census Bureau, Blue Mound has a total area of 0.59 square miles (1.53 km2), all land.

[1] One and a half miles northwest of the village is the Blue Mound, a glacial kame, a cone-shaped gravel hill rising 80 feet (24 m) above the surrounding farmland.

Surrounded by the Griswold Conservation Area, park and camping place, the mound is estimated to date from about 130,000 years ago in geologic time from melting of glacier ice.