Hanover is a village in Jo Daviess County, Illinois, United States, along the Apple River.

[5] According to the 2010 census, the village has a total area of 1.05 square miles (2.7 km2), all land.

[6] Hanover sits in the northwest corner of Illinois, within five miles of the Mississippi River.

Illinois Route 84, part of the scenic Great River Road, passes through the center of town.

37.3% of all households were made up of individuals, and 15.7% had someone living alone who was 65 years of age or older.