The history of Greenfield began in 1686, when the first settlers established themselves on lands then known as the "Green River District." Originally, this territory was part of neighboring Deerfield, but due to its remoteness and communication difficulties, residents sought independence. As a result, in 1753, Greenfield was officially incorporated as a separate town, taking its name from the river flowing through it.
The town's development was facilitated by a successful combination of geographical factors. Its location at the confluence of the Green and Deerfield Rivers, as well as its proximity to the Connecticut River, provided residents not only with fertile lands but also with a powerful source of energy for future industry. Furthermore, Greenfield found itself at the intersection of important trade routes, including the famous Mohawk Trail, making it a natural hub for commerce and logistics in Franklin County.
While the economy was initially built on agriculture and grain processing, the town underwent a true industrial revolution in the 19th century. Greenfield gained particular fame for its metalware production; the opening of the John Russell Cutlery Company factory turned it into one of the leading centers for cutlery manufacturing in the U.S. Later, a precision tool industry developed here, ultimately solidifying the town's status as an important manufacturing hub in New England.