Berlin is a town in the Capitol Planning Region, Connecticut, United States. The population was 20,175 at the 2020 census. It was incorporated in 1785. The geographic center of Connecticut is located in the town. Berlin is residential and industrial, and is served by the Amtrak station of the same name. Berlin also has two hamlets: Kensington and East Berlin. It has major manufacturers such as Plastic Molding Manufacturing, PYC manufacturing, and Budney Industries. Berlin has 1 high school 1 middle school and 3 elementary schools.