Castellero
| Castellero | |
|---|---|
| Comune di Castellero | |
| Location of Castellero | |
| Coordinates: 44°56′N 8°4′E / 44.933°N 8.067°E | |
| Country | Italy | 
| Region | Piedmont | 
| Province | Province of Asti (AT) | 
| Government | |
| • Mayor | Roberto Campia | 
| Area | |
|  • Total | 4.3 km2 (1.7 sq mi) | 
| Population  (jan. 2024) | |
|  • Total | 289 | 
| • Density | 67/km2 (170/sq mi) | 
| Time zone | UTC+1 (CET) | 
| • Summer (DST) | UTC+2 (CEST) | 
| Postal code | 14011 | 
| Dialing code | 0141 | 
Castellero is a comune (municipality) in the Province of Asti in the Italian region Piedmont, located about 30 kilometres (19 mi) southeast of Turin and about 11 kilometres (7 mi) northwest of Asti. As of 31 january 2024, it had a population of 289 and an area of 4.3 square kilometres (1.7 sq mi).
Castellero borders the following municipalities: Baldichieri d'Asti, Monale, and Villafranca d'Asti.