Orio is a fishing town located in the province of Gipuzkoa in the Basque Autonomous Community, northern Spain, with the town nucleus lyin…Orio is a fishing town located in the province of Gipuzkoa in the Basque Autonomous Community, northern Spain, with the town nucleus lying on the river Oria, roughly one mile away from its mouth by the Bay of Biscay. Orio had a population of 5,901 inhabitants as of 2016.