| Castilla | |
| Settlement Type: | Province |
| Subdivision Type: | Country |
| Subdivision Name: | Peru |
| Subdivision Type1: | Region |
| Subdivision Name1: | Arequipa |
| Established Title: | Founded |
| Established Date: | 1854 |
| Seat Type: | Capital |
| Seat: | Aplao |
| Leader Title: | Mayor |
| Leader Name: | Gilder Edy Medina Collado (2007) |
| Area Total Km2: | 6914.48 |
| Population Total: | 36568 |
| Population Footnotes: | |
| Population Density Km2: | auto |
| Blank Name Sec1: | UBIGEO |
| Blank Info Sec1: | 0404 |
| Website: | www.municipiocastilla.gob.pe |
Castilla Province is one of eight provinces in the Arequipa Region of Peru. It was named after Ramón Castilla.
The Chila mountain range traverses the province. One of the highest mountains of the province is Coropuna at 64250NaN0 above sea level. Other mountains are listed below:[1]
Machuqucha is one of the largest lakes of the province.[1]
The province is divided into fourteen districts which are, with its capital in parentheses:
The province is inhabited by indigenous citizens of Aymara and Quechua descent, as well as European descendants of Spanish settlers. Spanish, is the language which the majority of the population (79.72%) learnt to speak in childhood, 18.52% of the residents started speaking using the Quechua language and 1.51% using Aymara (2007 Peru Census).[2]