Enfield, town, Hartford County, northern Connecticut, on the Connecticut River, near the Massachusetts line; incorporated 1683. Plastics, machinery, aluminum and magnesium castings, games, toys, and pharmaceuticals are produced. The town has a junior college and a historic district. The community, settled in 1674, was part of Massachusetts until it was annexed by Connecticut in 1749. A Shaker community was here from about 1782 to 1917. The town is named for Enfield, England. Population 42,695 (1980); 45,532 (1990).