Asturias is a province that is coextensive with the autonomous community of Asturias, Spain. The province is divided into 78 municipalities. Spanish census, ÃÂvila is the 14th most populous of Spain's 50 provinces, with inhabitants, and the 21st largest by land area, spanning . Municipalities are the most basic local political division in Spain and can only belong to one province. They enjoy a large degree of autonomy in their local administration, being in charge of tasks such as urban planning, water supply, lighting, roads, local police, and firefighting. Muncipalities also belong to a comarca, a second level administrative unit.