Franklin Grove is a village in Lee County, Illinois, United States.

The LHA is a national organization dedicated to the preservation and promotion of the Lincoln Highway, the first road across the United States of America, which was routed through Franklin Grove.

According to the 2010 census, Franklin Grove has a total area of 0.48 square miles (1.24 km2), all land.

[3] As of the census[5] of 2000, there were 1,052 people, 372 households, and 249 families residing in the village.

28.8% of all households were made up of individuals, and 21.0% had someone living alone who was 65 years of age or older.