From Ancestry.com Wiki
Hancock is a town in Massachusetts. It was formed in 1776 and was previously called Jericho Plantation. It can be found in Berkshire county and is a part of the Northern registry of deed district. For more information, contact the county at 3650 Hancock Rd., Hancock 01237. On the attached map, Hancock is shown as 5 in Berkshire county.
For information about the state of Massachusetts see Massachusetts Family History Research.