Brimfield is a town in Hampden County, Massachusetts, United States. It is part of the Springfield, Massachusetts Metropolitan Statistical Area. Brimfield was first settled in 1706 and was officially incorporated in 1731. According to the United States Census Bureau, the town has a total area of 35.2 square miles (91 Square Kilometer), of which, 34.7 square miles (90 Square Kilometer) of it is land and 0.5 square miles (1.3 Square Kilometer) of it (1.45%) is water. Brimfield is located in Western Massachusetts. Brimfield is bordered by Sturbridge on the east, Holland and Wales on the south, Monson and Palmer on the west, and Warren on the north. U.S. Route 20 and Route 19 both run through Brimfield. Interstate 90 cuts through the northern portion of the town in two sections.