Plentzia is a town and municipality located in the province of Biscay, in the autonomous community of the Basque Country. The town has 4,459 inhabitants. Plentzia is located 25 km north-east of Bilbao. It is part of the Bilbao metropolitan area, as well as being the terminus of the first line of the city's Metro. In addition to the Metro, two BizkaiBus bus routes serve the town, with further destinations served from Urduliz, the next stop on the Metro.