Coya is one of 24 parishes (administrative divisions) in Piloña, a municipality within the province and autonomous community of Asturias, in northern Spain.The population is 376 (INE 2011).Villages and hamlets Bargaedo Monte Mures Serpiedo (Sarpiéu) Villabajo Villarriba La Baraya Brañaviella (Brañavieya) Buenavista La Cabaña El Canello (El Caneyu) La Carabaña La Cotariella La Gallera Tranvarria (Trambarría)