Pittsfield is the largest city and the county seat of Berkshire County,[2] Massachusetts, United States. It is the principal city of the Pittsfield, Massachusetts Metropolitan Statistical Area which encompasses all of Berkshire County. The population was 43,927 at the 2020 census.[3] Although the population has declined in recent decades, Pittsfield remains the third largest municipality in Western Massachusetts, behind only Springfield and Chicopee.[4] In 2006, Forbes ranked Pittsfield as number 61 in its list of Best Small Places for Business.[5] In 2008, Country Home magazine ranked Pittsfield as #24 in a listing of “green cities” east of the Mississippi.[6] In 2009, the City of Pittsfield was chosen to receive a 2009 Commonwealth Award, Massachusetts’ highest award in the arts, humanities, and sciences.[7] In 2010, the Financial Times proclaimed Pittsfield the “Brooklyn of the Berkshires” in an article covering its renaissance at that time.[8]