Rio Mau e Arcos is a civil parish in the municipality of Vila do Conde, Portugal. It was formed in 2013 by the merger of the former parishes Rio Mau and Arcos. The population in 2011 was 2,681,Instituto Nacional de Estatística (INE), Census 2011 results according to the 2013 administrative division of Portugal in an area of 15.70 km².
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