Plainfield, Massachusetts is located Northwestern Massachusetts, bordered by Hawley on the north, Ashfield on the northeast and east, Cummington on the south, Windsor on the west, and Savoy on the northwest. Plainfield is 28 miles northeast of Pittsfield, 29 miles southwest of Greenfield, and 117 miles northwest of Boston. Principal highways are State Routes 8A and 116. State Route 9, which runs roughly E-W across Massachusetts, is easily accessible in neighboring Cummington. There is no passenger or freight rail service in Plainfield, but the network of intermodal facilities serving Massachusetts is easily accessible.

Some information gathered on Plainfield, MA is courtesy of Commonwealth Communities at Mass.gov