| Castilfrío de la Sierra, Spain | |
|---|---|
| Country | Spain |
| Autonomous community | Castile and León |
| Province | Soria |
| Municipality | Castilfrío de la Sierra |
| Area | |
| • Total | 12 km2 (4.6 sq mi) |
| Population (2004) | |
| • Total | 27 |
| • Density | 2.3/km2 (6/sq mi) |
| Time zone | CET (UTC+1) |
| • Summer (DST) | CEST (UTC+2) |
Castilfrío de la Sierra is a municipality located in the province of Soria, Castile and León, Spain. According to the 2004 census (INE), the municipality has a population of 27 inhabitants.