Hampshire county. This town is elevated on the Green mountain range, at the N.W. corner of the county, and watered by the upper branches of Westfield river.—Although the surface is rough and mountainous, yet the soil is excellent for pasturage, and produces some fine cattle. In 1837, the fleeces of 3,772 sheep, sheared in this town, were valued at $5,379. There are 2 woolen mills, and manufactures of boots, shoes, leather, palm-leaf hats, chairs, cabinet ware, &c.; total annual value about $40,000. Plainfield lies 110 miles W. by N. from Boston and 20 N.W. from Northampton. Incorporated, 1785. Population, 1837, 865.