Calstock is a civil parish and also a big town in south east Cornwall, England, United Kingdom, on the boundary with Devon. The town is positioned on the River Tamar 6 miles (9.7 km) south 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 actually increased 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, as well as 44 acres (0.18 km2) of the tidal Tamar. Ashburton Hotel and also Danescombe Quay overlooking the River Tamar In addition to 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 village is within the Tamar Valley AONB, is overlooked by Cotehele residence as well as gardens, as well as pushes the beautiful Tamar Valley railway. Calstock train station opened up on 2 March 1908. The town is twinned with Saint-Thuriau in Brittany, France.