Ayacucho is a department of San Luis Province, Argentina.

With an area of it borders to the east with the departments of Junín and San Martín, to the south with Coronel Pringles and Belgrano, to the west with the provinces of Mendoza and San Juan, and to the north with San Juan, La Rioja and Córdoba, which makes it the only department in Argentina which borders four provinces.

Municipalities Candelaria La Majada Leandro N. Alem Luján Quines Río Juan Gómez San Francisco del Monte de Oro

Villages Agro Candelaria Balde de Azcurra Balde de Puertas Balde de Quines Baldecito Barzola Bella Vista El Bañado El Cadillo El Chañar El Retamo El Vinagrillo El Zampal El Zapallar La Botija La Chañarienta La Leona La Selva La Tranca La Venecia Lomas Blancas Punta Negra San Ignacio San Roque San Vicente Santa Rosa de Cantantal La Candela La Aguada

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