Calstock is a civil parish as well as a big town in south eastern Cornwall, England, United Kingdom, on the border with Devon. The village is situated on the River Tamar 6 miles (9.7 kilometres) southern west of Tavistock as well as 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 incorporates 5,760 acres (23.3 km2) of land, 70 acres (0.28 km2) of water, and 44 acres (0.18 km2) of the tidal Tamar. Ashburton Hotel and also Danescombe Quay ignoring the River Tamar Along with Calstock, various other settlements in the parish include Albaston, Chilsworthy, Gunnislake, Harrowbarrow, Latchley, Metherell, Coxpark, Dimson, Drakewalls, Norris Green, Rising Sun and also St Ann's Chapel. Calstock town is within the Tamar Valley AONB, is neglected by Cotehele home as well as yards, as well as lies on the breathtaking Tamar Valley railway. Calstock train station opened up on 2 March 1908. The town is twinned with Saint-Thuriau in Brittany, France.