Castrillo de Onielo

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Castrillo de Onielo
municipality
Country	Spain
Autonomous community	Castile and León
Province	Palencia
Municipality	Castrillo de Onielo
Area
• Total	40 km2 (20 sq mi)
Population  (2018)[1]
• Total	101
• Density	2.5/km2 (6.5/sq mi)
Time zone	UTC+1 (CET)
• Summer (DST)	UTC+2 (CEST)
Website	Official website

Castrillo de Onielo is a municipality located in the province of Palencia, Castile and León, Spain. According to the 2018 census (INE), the municipality has a population of 101 inhabitants.