Rio Tinto () is a
Portuguese city and parish, located in
Gondomar Municipality, in northern
Portugal. The population in 2011 was 50,713,
[Instituto Nacional de Estatística (INE)]
Census 2011 results according to the 2013 administrative division of Portugal in an area of 9.38 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 Porto agglomeration.

Rio Tinto lies just outside the city of
Porto.
References
Cities in Portugal
Freguesias of Gondomar, Portugal
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