According to the
United States Census Bureau, the Plainfield CDP has a total area of , of which is land and , or 2.18%, is water. The village is located in the northern corner of the town of Plainfield along
U.S. Route 2, east of
Montpelier, the state capital, and west of
St. Johnsbury.
Goddard College is located just to the west of the CDP. Plainfield is located on the
Winooski River. ==Education==