Laguna de Duero is a municipality located in the province of Valladolid, Castile and León, Spain. According to the 2016 census, the municipality has a population of 22,696 inhabitants. It is the second largest city in Valladolid behind Valladolid City. Nowadays it is an industrial town situated 7 km away from the capital city of Valladolid. The town has some neighbourhoods distant from the town center like Torrelago or El Villar.