HomepageTagsDénia Dénia - online puzzles Dénia (Valencian: [ˈdenia], locally [ˈdenjɐ]; Spanish: Denia [ˈdenja]) is a city in the province of Alicante, Spain, on the Costa Blanca halfway between Alicante and Valencia, the judicial seat of the comarca of Marina Alta. As of 2014, it had a population of 41,672.