Berlin is a town in Hartford County, Connecticut state. At the 2010 census its population was estimated to be 19,866. It was incorporated in 1785. The geographic center of the state is located in the town. Berlin is residential and industrial, and served by the Amtrak station of the same name.
Berlin is one of the birthplaces of interchangeable parts manufacturing and of the industrial revolution in the United States, in the workshop of Simeon North.