Calstock is a civil parish and a big village in south eastern Cornwall, England, United Kingdom, on the boundary with Devon. The village is situated on the River Tamar 6 miles (9.7 kilometres) south west of Tavistock and also 10 miles (16 kilometres) north of Plymouth. The church had a population of 6,095 in the 2001 census. This had raised to 6,431 at the 2011 census. The parish includes 5,760 acres (23.3 km2) of land, 70 acres (0.28 km2) of water, and also 44 acres (0.18 km2) of the tidal Tamar. Ashburton Hotel and also Danescombe Quay forgeting the River Tamar In addition to Calstock, other negotiations in the parish consist of Albaston, Chilsworthy, Gunnislake, Harrowbarrow, Latchley, Metherell, Coxpark, Dimson, Drakewalls, Norris Green, Rising Sun as well as St Ann's Chapel. Calstock village is within the Tamar Valley AONB, is overlooked by Cotehele house and yards, and also rests on the scenic Tamar Valley train. Calstock railway station opened up on 2 March 1908. The village is twinned with Saint-Thuriau in Brittany, France.