Berkshire County Flag

Berkshire County

State:
Massachusetts
County Seat:
Pittsfield

Berkshire County's 2026 population is estimated at 128,452, reflecting a -0.11% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Berkshire County is the 11th largest county in Massachusetts. The 2010 population was 131,318 and has grown -2.18% since 2010.

128,452
Total Population
139
Population Density (mi²)
11
Population Rank (State)
-137 -0.11%
Annual Population Growth

Berkshire County Population

Demographics

Economics and Income Statistics