Bergen is a city and municipality in Hordaland on the west coast of Norway. , the municipality had a population of 277,378, and the urban population was 250,420 , making Bergen the second-largest city in Norway. The municipality covers an area of and is located on the peninsula of Bergenshalvøyen. The city centre and northern neighbourhoods are located on Byfjorden, "the city fjord", and the city is surrounded by mountains; Bergen is known as the city of seven mountains. Many of the extra-municipal suburbs are located on islands. Bergen is the administrative centre of Hordaland and consists of eight boroughs—Arna, Bergenhus, Fana, Fyllingsdalen, Laksevåg, Ytrebygda, Årstad and Åsane.