Castil de Vela is a municipality in the province of Palencia, within the autonomous community of Castile and León, Spain. It is located in the northern part of the country, in a region characterised by its rural landscape and historic villages.
The municipality is small, with a population recorded as 91 inhabitants in the 2004 census conducted by Spain's National Statistics Institute (INE). This figure reflects the modest size typical of many villages in the Palencia area.
As a municipality, Castil de Vela holds administrative status within the province of Palencia, one of the nine provinces that make up Castile and León. The region is known for its agricultural traditions and its concentration of small, sparsely populated settlements.