According to Regulator Plan of transportation Routes of the city the metropolis of Piura is the conurbation of Piura, Castilla and Catacaos.
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According to "Concerted development plan Piura 2009–2014" the districts of Piura, Castilla and Catacaos of Piura Province currently are consolidated into a metropolitan area to act with the same urban, industrial and commercial plan.
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