Longlevens, originally Longleavens, is a suburb of Gloucester, United Kingdom, developed from a farmstead during the twentieth century. The name may be based on the old Roman name Colonia Glevensis. One of the oldest roads is 'The Avenue', which is shown on old maps as a number of farm cottages. The population of Longlevens was 9,532 at the time of the 2011 Census.