Cedarville is a village in Stephenson County, Illinois, United States.

It is the birthplace of social activist Jane Addams, the 1931 Nobel Peace Prize winner.

[2] According to the 2010 census, Cedarville has a total area of 0.45 square miles (1.17 km2), all land.

The racial makeup of the village was 98.75% White, 0.14% Native American and 1.11% Asian.

21.0% of all households were made up of individuals, and 8.3% had someone living alone who was 65 years of age or older.