Rochester was granted in 1780, chartered in 1781 to Dudley Chase, Asa Whitcomb and 63 others, then organized in 1788. It was first settled in the winter of 1781-1782 by David Currier and his family. Rochester's boundaries expanded through annexation of part of Pittsfield town in 1806, annexation of an additional area from Pittsfield town plus a part of Braintree town in 1824, a part of Hancock town in 1834, and finally an annexation of part of Goshen town in 1847.