Rio Tinto (Gondomar)
Rio Tinto (Portuguese pronunciation: [ˈʁiu ˈtĩtu]) is a Portuguese city and parish, located in Gondomar Municipality, in northern Portugal. It has a population of 50 762 (2011 Census) inhabitants and a total area of 9.5 km².
Rio Tinto, which in Portuguese means red river, was elevated to city status in 1995, and the city of Rio Tinto includes two parishes (freguesias): Baguim do Monte and Rio Tinto, with a total of 65,000 inhabitants, being the most populous city in Gondomar municipality, and third largest in the Greater Oporto (Grande Porto).
Rio Tinto lies just outside the city of Oporto.