Calstock is a civil parish and a huge village in south east Cornwall, England, United Kingdom, on the border with Devon. The town is located on the River Tamar 6 miles (9.7 km) south west of Tavistock and 10 miles (16 km) north of Plymouth. The church 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, 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 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 also yards, as well as rests on the scenic Tamar Valley train. Calstock train station opened on 2 March 1908. The town is twinned with Saint-Thuriau in Brittany, France.