Carcarañá is a city in the, located in the San Lorenzo Department, on the southern banks of the Carcarañá River, 47 km west of Rosario on National Route 9, and 196 km south of the provincial capital. As of the it has about 22,000 inhabitants. Carcarañá was founded in 1870 and attained the status of comuna (commune) on 10 December 1890. It is the birthplace of José Ernesto Sosa, Claudio Yacob, and brothers Javier and Germán Lux.