Mataró is the capital and largest town of the Maresme county in Catalonia, Spain. It is located on the Maresme coast, to the south of Costa Brav…Mataró is the capital and largest town of the Maresme county in Catalonia, Spain. It is located on the Maresme coast, to the south of Costa Brava, between Cabrera de Mar and Sant Andreu de Llavaneres, 30 kilometres north-east of Barcelona. As of 2021, it had a population of 129,749.