Ohio is a village in Bureau County, Illinois, United States.

[6] According to the 2021 census gazetteer files, Ohio has a total area of 0.75 square miles (1.94 km2), all land.

[1] As of the 2020 census[8] there were 465 people, 227 households, and 150 families residing in the village.

There were 239 housing units at an average density of 317.40 per square mile (122.55/km2).

31.28% of all households were made up of individuals, and 16.30% had someone living alone who was 65 years of age or older.

[10] Ohio is located within the Sauk Valley Community College district with tuition and fees at the in-district rate.