Bantam is a borough in Litchfield County, Connecticut, United States. The population was 759 at the 2010 census. While separated for census and historic reasons, Bantam is governed as an integral part of the town of Litchfield. Bantam is the 2nd least populous borough and municipality in Connecticut, only beaten by Fenwick. On July 10, 1989, many of the buildings in Bantam were heavily damaged by a tornado that ripped through Litchfield and New Haven Counties.