Castle Bytham is a village and civil parish of around 300 houses in South Kesteven, Lincolnshire, England. It is located 9 miles (15 km) north of Stamford and 9 miles (15 km) west of Bourne.The population was measured at 768 in 317 households at the 2011 census. At one time the village was an important commercial centre for the surrounding agricultural communities, but it is now largely a dormitory, although a number of farming families remain with a much reduced workforce.