Calstock is a civil parish as well as a large town in south east Cornwall, England, UK, on the boundary with Devon. The village is situated on the River Tamar 6 miles (9.7 km) southern west of Tavistock and also 10 miles (16 km) north of Plymouth. The parish had a population of 6,095 in the 2001 census. This had actually boosted to 6,431 at the 2011 census. The parish encompasses 5,760 acres (23.3 km2) of land, 70 acres (0.28 km2) of water, as well as 44 acres (0.18 km2) of the tidal Tamar. Ashburton Hotel and Danescombe Quay overlooking the River Tamar In addition to Calstock, various other settlements in the parish consist of Albaston, Chilsworthy, Gunnislake, Harrowbarrow, Latchley, Metherell, Coxpark, Dimson, Drakewalls, Norris Green, Rising Sun and St Ann's Chapel. Calstock town is within the Tamar Valley AONB, is forgotten by Cotehele house as well as yards, and also lies on the picturesque Tamar Valley railway. Calstock train station opened up on 2 March 1908. The village is twinned with Saint-Thuriau in Brittany, France.