San Sebastián or Donostia is a coastal city and municipality located in the Basque Autonomous Community, Spain. It lies on the coast of the Bay of Biscay, 20 km from the French border. The capital city of the province of Gipuzkoa, the municipality's population is 186,095 as of 2015, with its metropolitan area reaching 436,500 in 2010. Locals call themselves donostiarra (singular), both in Spanish and Basque.