Greater Bilbao (Basque: Bilboaldea, Spanish: Gran Bilbao) is an administrative division of the province of Biscay, in the Basque Country, Spain. It is one of the seven comarcas of Biscay and the most populated one. The capital city of Greater Bilbao is Bilbao.

Greater Bilbao is made by the municipalities situated along the Estuary of Bilbao which themselves form a conurbation, which metropolitan area is the fifth most populous in Spain.

Geography

Greater Bilbao, or Bilboaldea, is located at the northwest of the province of Biscay, limiting with the comarcas of Enkarterri in the west, Mungialdea and Busturialdea in the east, Durangaldea in the southeast and Arratia-Nerbioi in the south. The Bay of Biscay limits at north.

Divisions

Greater Bilbao can be divided into six subcomarcas or subregions:

• The city of Bilbao itself, comprising a single municipality but containing eight districts; earlier part of the Uribe region (merindad)
• The left bank: Traditionally an industrial, port, and manufacturing zone. It includes Barakaldo, Sestao, Portugalete and Santurtzi; earlier part of a larger merindad of Enkarterri, other than Barakaldo which was part of Uribe
• The right bank: A mainly residential area, including Erandio, Leioa, and the more affluent Getxo; earlier part of Uribe
• The mining zone west of the left bank, where the main iron ore resources were located: Muskiz, Gallarta, Ortuella; earlier part of Enkarterri
• Txoriherri, wide expansion zone north of Bilbao / east of the right bank, where the international airport and the University of the Basque Country are located; earlier part of Uribe
• Hego Uribe, south-east of Bilbao including Basauri, Galdakao and Arrigorriaga; earlier part of Uribe
• Uribe-Kosta: the coastal area north of Getxo is being integrated into the metropolitan area in the recent years, with the development of low density residential areas connected by the metro; earlier part of Uribe, most of the municipalities in this zone belong to the Mungialdea comarca

Municipalities

Greater Bilbao is divided into 25 municipalities, being Bilbao the capital city. The 25 municipalities, among with some others, make the Metropolitan Area of Bilbao.

#	Municipality	Population 2018[1]	Area in km2
	Abanto Zierbena	9,545	18
	Alonsotegi	2,903	16
	Arrigorriaga	12,230	22.8
	Barakaldo	100,435	24.3
	Basauri	40,762	7.2
	Bilbao	345,821	41.2
	Derio	6,545	7.4
	Zierbena	1,492	9.1
	Etxebarri	11,304	3.3
	Erandio	24,222	18.0
	Galdakao	29,288	31.7
	Getxo	78,276	11.9
	Larrabetzu	2,029	21.5
	Leioa	31,495	8.5
	Lezama	2,429	16.5
	Laudio	18,205	37.45
	Loiu	2,416	15.3
	Muskiz	7,567	21.5
	Ortuella	8,360	7.7
	Portugalete (Portugaldeta)	45,826	3.2
	Santurtzi	45,795	6.7
	Sestao (Ziztao)	27,445	3.5
	Sondika	4,495	6.3
	Trapagaran	11,953	13.1
	Zamudio	3,236	18.1
	Zaratamo	1,515	10.0