San Antonio de Padua de la Concordia (usually shortened to Concordia) is a city in the north-east of the province of Entre Ríos in the Argentine Mesopotamia. It had about 172,000 inhabitants at the 2001 census [INDEC], and is the head town of the department of the same name.Concordia lies on the right-hand (western) shore of the Uruguay River, opposite the city of Salto in Uruguay.