Calstock is a civil parish as well as a huge village in south eastern Cornwall, England, United Kingdom, on the border with Devon. The town is positioned on the River Tamar 6 miles (9.7 km) 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 actually increased 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, and also 44 acres (0.18 km2) of the tidal Tamar. Ashburton Hotel and also Danescombe Quay neglecting the River Tamar Along with Calstock, other negotiations in the parish include Albaston, Chilsworthy, Gunnislake, Harrowbarrow, Latchley, Metherell, Coxpark, Dimson, Drakewalls, Norris Green, Rising Sun as well as St Ann's Chapel. Calstock town is within the Tamar Valley AONB, is ignored by Cotehele home and also gardens, and also pushes the breathtaking Tamar Valley railway. Calstock train station opened up on 2 March 1908. The village is twinned with Saint-Thuriau in Brittany, France.