Villacarrillo is a locality and Spanish municipality located in the south-western part of the region of Las Villas, in the province of Jaén. It borders the municipalities of Santisteban del Puerto, Iznatoraf, Villanueva del Arzobispo, Santiago-Pontones, Santo Tomé, ÃÂbeda (by the enclave known as Rincón de ÃÂbeda), and Sabiote.
The municipality includes the population centers of Villacarrillo - which hosts the capital of the Las Villas region -, Mogón, La Caleruela, Agrupación de Mogón y Arroturas. It has a population of 10,902 inhabitants.
Villacarrillo is known as a centre of olive oil production in Spain, with the world's largest olive oil mill, capable of processing 2,500 tonnes of olives per day, located in the municipality. More than 70% of Spain's olive oil production takes place in the Jaén province, of which Villacarrillo is a part.