The growth of Arroyo de la Encomienda Curiosity · Arroyo de la Encomienda, Campiña del Pisuerga, Valladolid Image of Arroyo de la Encomienda, not of the place itself. In the middle of the nineteenth century the place had seventy-one inhabitants. It went from 3,635 residents in the year 2000 to close to 22,800 in 2025, becoming the second most populated municipality in the province. Photo: Magnus Colossus (CC BY-SA 3.0) What to see and do in Arroyo de la Encomienda