North Heritage trail Indiana

Thorntown is a town in Sugar Creek Township, Boone County, Indiana, United States. The population was 1,520 at the 2010 census. Thorntown is located in northwestern Boone County, about halfway between Lafayette and Indianapolis.

Thorntown Public Library is a historic Carnegie library located at Thorntown, Boone County, Indiana. It was built in 1914-1915, and is a one-story, three bay, brown brick building with a red clay tile hipped roof. It has a round arched entrance and limestone trim. Its construction was funded with $10,000 from the Carnegie Corporation of New York.