La Prairie is a village in Adams County, Illinois, United States.

[4] According to the 2021 census gazetteer files, La Prairie has a total area of 0.19 square miles (0.49 km2), all land.

[5] As of the 2020 census[7] there were 42 people, 28 households, and 21 families residing in the village.

There were 25 housing units at an average density of 129.53 per square mile (50.01/km2).

25.00% of all households were made up of individuals, and 21.43% had someone living alone who was 65 years of age or older.