thumb|alt=Map of Spain with Biscay highlighted|Map of Spain with Biscay highlighted
thumb|alt=Map of the province of Biscay with its municipalities|Map of the municipalities in the province of Biscay
Biscay is a province in the autonomous community of the Basque Country, Spain, that is divided into 113 municipalities. and the second smallest by land area, spanning .
!scope="col"| Population<br />(2011 census)
!scope="col"| Population change
!scope="col" data-sort-type="number" | Land area (km²)
!scope="col" data-sort-type="number" | Population density<br />(2023)
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!scope="row" align="center"|Abadiño
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!scope="row" align="center"|Abanto y Ciérvana-Abanto Zierbena
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!scope="row" align="center"|Ajangiz
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!scope="row" align="center"|Alonsotegi
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!scope="row" align="center"|Amorebieta-Etxano
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!scope="row" align="center"|Amoroto
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!scope="row" align="center"|Arakaldo
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!scope="row" align="center"|Arantzazu
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!scope="row" align="center"|Areatza
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!scope="row" align="center"|Arrankudiaga
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!scope="row" align="center"|Arratzu
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!scope="row" align="center"|Arrieta
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!scope="row" align="center"|Arrigorriaga
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!scope="row" align="center"|Artea
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!scope="row" align="center"|Artzentales
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!scope="row" align="center"|Atxondo
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!scope="row" align="center"|Aulesti
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!scope="row" align="center"|Bakio
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!scope="row" align="center"|Balmaseda
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!scope="row" align="center"|Barakaldo
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!scope="row" align="center"|Barrika
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!scope="row" align="center"|Basauri
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!scope="row" align="center"|Bedia
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!scope="row" align="center"|Berango
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!scope="row" align="center"|Bermeo
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!scope="row" align="center"|Berriatua
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!scope="row" align="center"|Berriz
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!scope="row" align="left" style="background:#CCF;"|Bilbao
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!scope="row" align="center"|Busturia
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!scope="row" align="center"|Derio
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!scope="row" align="center"|Dima
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!scope="row" align="center"|Durango
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!scope="row" align="center"|Ea
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!scope="row" align="center"|Elantxobe
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!scope="row" align="center"|Elorrio
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!scope="row" align="center"|Erandio
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!scope="row" align="center"|Ereño
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!scope="row" align="center"|Ermua
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!scope="row" align="center"|Errigoiti
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!scope="row" align="center"|Etxebarri
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!scope="row" align="center"|Etxebarria
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!scope="row" align="center"|Forua
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!scope="row" align="center"|Fruiz
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!scope="row" align="center"|Galdakao
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!scope="row" align="center"|Galdames
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!scope="row" align="center"|Gamiz-Fika
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!scope="row" align="center"|Garai
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!scope="row" align="center"|Gatika
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!scope="row" align="center"|Gautegiz Arteaga
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!scope="row" align="center"|Gernika-Lumo
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!scope="row" align="center"|Getxo
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!scope="row" align="center"|Gizaburuaga
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!scope="row" align="center"|Gordexola
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!scope="row" align="center"|Gorliz
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!scope="row" align="center"|Güeñes
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!scope="row" align="center"|Ibarrangelu
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!scope="row" align="center"|Igorre
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!scope="row" align="center"|Ispaster
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!scope="row" align="center"|Iurreta
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!scope="row" align="center"|Izurtza
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!scope="row" align="center"|Karrantza Harana/Valle de Carranza
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!scope="row" align="center"|Kortezubi
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!scope="row" align="center"|Lanestosa
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!scope="row" align="center"|Larrabetzu
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!scope="row" align="center"|Laukiz
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!scope="row" align="center"|Leioa
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!scope="row" align="center"|Lekeitio
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!scope="row" align="center"|Lemoa
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!scope="row" align="center"|Lemoiz
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!scope="row" align="center"|Lezama
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!scope="row" align="center"|Loiu
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!scope="row" align="center"|Mallabia
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!scope="row" align="center"|Mañaria
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!scope="row" align="center"|Markina-Xemein
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!scope="row" align="center"|Maruri-Jatabe
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!scope="row" align="center"|Mendata
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!scope="row" align="center"|Mendexa
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!scope="row" align="center"|Meñaka
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!scope="row" align="center"|Morga
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!scope="row" align="center"|Mundaka
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!scope="row" align="center"|Mungia
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!scope="row" align="center"|Munitibar-Arbatzegi Gerrikaitz
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!scope="row" align="center"|Murueta
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!scope="row" align="center"|Muskiz
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!scope="row" align="center"|Muxika
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!scope="row" align="center"|Nabarniz
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!scope="row" align="center"|Ondarroa
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!scope="row" align="center"|Orozko
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!scope="row" align="center"|Ortuella
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!scope="row" align="center"|Otxandio
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!scope="row" align="center"|Plentzia
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!scope="row" align="center"|Portugalete
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!scope="row" align="center"|Santurtzi
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!scope="row" align="center"|Sestao
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!scope="row" align="center"|Sondika
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!scope="row" align="center"|Sopelana
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!scope="row" align="center"|Sopuerta
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!scope="row" align="center"|Sukarrieta
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!scope="row" align="center"|Trucios-Turtzioz
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!scope="row" align="center"|Ubide
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!scope="row" align="center"|Ugao-Miraballes
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!scope="row" align="center"|Urduliz
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!scope="row" align="center"|Urduña/Orduña
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!scope="row" align="center"|Usansolo
| colspan=5 align="center"| No data
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!scope="row" align="center"|Valle de Trápaga-Trapagaran
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!scope="row" align="center"|Zaldibar
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!scope="row" align="center"|Zalla
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!scope="row" align="center"|Zamudio
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!scope="row" align="center"|Zaratamo
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!scope="row" align="center"|Zeanuri
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!scope="row" align="center"|Zeberio
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!scope="row" align="center"|Zierbena
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!scope="row" align="center"|Ziortza-Bolibar
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|- class="sortbottom" style="text-align:center;" style="background: #f2f2f2;"
!scope="row" align="center"| Biscay
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|align="right"|
|- class="sortbottom" style="text-align:center;" style="background: #f2f2f2;"
!scope="row" align="center"| Basque Country
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