Castilla province
| Castilla | |
|---|---|
| Coropuna as seen from Tipan | |
| Location of Castilla in the Arequipa Region | |
| Country | Peru | 
| Region | Arequipa | 
| Founded | 1854 | 
| Capital | Aplao | 
| Government | |
| • Mayor | Gilder Edy Medina Collado (2007) | 
| Area | |
|  • Total | 6,914.48 km2 (2,669.70 sq mi) | 
| Population | |
|  • Total | 36,568 | 
| • Density | 5.3/km2 (14/sq mi) | 
| UBIGEO | 0404 | 
| Website | www.municipiocastilla.gob.pe | 
Castilla is one of eight provinces in the Arequipa Region of Peru. It was named after Ramón Castilla.