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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.
Castrillo de Onielo | |
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 Interactive map of Castrillo de Onielo | |
| Country |  Spain |
| Autonomous community |  Castile and León |
| Province |  Palencia |
| Municipality | Castrillo de Onielo |
| Area | |
• Total | 40 km2 (15 sq mi) |
| Population (2025-01-01)[1] | |
• Total | 91 |
| • Density | 2.3/km2 (5.9/sq mi) |
| Time zone | UTC+1 (CET) |
| • Summer (DST) | UTC+2 (CEST) |
| Website | Official website |
References
edit- ↑ National Statistics Institute (13 December 2025). "Municipal Register of Spain of 2025".
41°51′N 4°18′W / 41.850°N 4.300°W
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