Exeter is a village in Scott County, Illinois, United States.

[3] According to the 2010 census, Exeter has a total area of 0.69 square miles (1.79 km2), all land.

There were 32 housing units at an average density of 46.4 per square mile (17.9/km2).

The racial makeup of the village was 98.57% White and 1.43% Native American.

25.9% of all households were made up of individuals, and 7.4% had someone living alone who was 65 years of age or older.