Hampshire county. There are a number of ponds in this town, by which, and Swift river passing through it, a good water power is acquired. There is a woolen mill in the town, and manufactures of shoes, boots, palm-leaf hats, and scythes. Incorporated, 1754. Population, 1837, 842. Greenwich lies 75 miles W. from Boston and 17 N.E. from Northampton.