'Berkshire County, MA' definitions:

Berkshire -- U.S. County in Massachusetts

From: Gazetteer 2000
Name :
Berkshire -- U.S. County in Massachusetts
Population (2000) :
134953
Housing Units (2000) :
66301
Land area (2000) :
931.317298 sq. miles (2412.100627 sq. km)
Water area (2000) :
14.952826 sq. miles (38.727640 sq. km)
Total area (2000) :
946.270124 sq. miles (2450.828267 sq. km)
Located within :
Massachusetts (MA), FIPS 25
Location :
42.396128 N, 73.209889 W