Mostazal
| Mostazal | |
|---|---|
| Tronco creek and CPP biomase plant | |
| Coordinates: 33°59′S 70°41′W / 33.983°S 70.683°W | |
| Country | Chile | 
| Region | O'Higgins Region | 
| Province | Cachapoal Province | 
| Government | |
| • Type | Municipality | 
| • Alcalde | Sergio Medel Acosta | 
| Area | |
|  • Total | 523.9 km2 (202.3 sq mi) | 
| Elevation | 486 m (1,594 ft) | 
| Population  (2012 Census) | |
|  • Total | 23,430 | 
| • Density | 45/km2 (120/sq mi) | 
| • Urban | 17,903 | 
| • Rural | 3,963 | 
| Sex | |
| • Men | 11,038 | 
| • Women | 10,828 | 
| Area code | (+56) 72 | 
| Website | Municipality of Mostazal | 
Mostazal (Spanish pronunciation: [mostaˈsal]) is a Chilean commune in Cachapoal Province, O'Higgins Region. The capital of the commune is the city of San Francisco de Mostazal.