Allenville is a village in Moultrie County, Illinois, United States.

[3] Allenville is in southeastern Moultrie County along Illinois Route 121, which leads northwest 7 miles (11 km) to Sullivan, the county seat, and southeast 11 miles (18 km) to Mattoon.

According to the U.S. Census Bureau, Allenville has a total area of 0.61 square miles (1.58 km2), all land.

[2] Coon Creek runs through the west side of the village, flowing north toward the Kaskaskia River in Lake Shelbyville.

About 4.0% of families and 7.7% of the population were below the poverty line, including none of those under the age of eighteen or sixty five or over.