Thorntown is a town in Sugar Creek Township, Boone County, Indiana.

Thorntown is located in northwestern Boone County, about halfway between Lafayette and Indianapolis.

[6] Thorntown is the English translation for the name of a former Native American village located there.

[7] The Thorntown Public Library was listed on the National Register of Historic Places in 1986.

[8] According to the 2010 census, Thorntown has a total area of 0.6 square miles (1.55 km2), all land.

20.7% of all households were made up of individuals, and 11.7% had someone living alone who was 65 years of age or older.

The town's fire service is provided by Thorntown-Sugar Creek Twp.

The town's marshals are also in charge of collecting loose or stray animals as well as enforcing local ordinance and state laws.

The officers have full police authority within anywhere in the state of Indiana as prescribed by law.