Castrillo de Duero
Castrillo de Duero is a village in Valladolid, Castile-Leon, Spain. The municipality covers an area of 25.77 square kilometres (9.95 sq mi) and as of 2011 had a population of 155 people.
Coordinates: 41°35′N 4°01′W / 41.583°N 4.017°W
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