Hampden

Hampden, county, southwestern Massachusetts, U.S., bordered by Connecticut to the south. The county’s terrain is characterized by mountains in the west and by ridges and valleys in the east, bisected north-south by the Connecticut River. Other watercourses include the Chicopee and Westfield rivers and the Cobble Mountain Reservoir. Chester-Blandford, Granville, and Tolland state forests are found in the west, while Brimfield State Forest is in the east. The county, created in 1812, is named for...