Boyton (Cornish: Trevoya) is a civil parish and village in Cornwall, England, United Kingdom. It is situated close to the River Tamar and the border with Devon about six miles (10 km) north of Launceston. According to the 2001 census it had a population of 378.This increased to 457 at the 2011 census. At Boyton Mill the miller's house is built of stone and wooden beams. The mill building itself has many original features, the waterwheel and machinery still turn and can be seen working. Some parts of the mill building dates back to the 13th century, and the main house dates back over 500 years.