Biscay is aprovince in theautonomous community of theBasque Country, Spain, that is divided into 113municipalities.[1] As of the 2023[update] Spanish census, the province is thetenth largest by population, with1,153,282 inhabitants,[2] and the second smallest by land area, spanning 2,215.55 square kilometres (855.43 sq mi).[3] Municipalities are the basic local political division in Spain[4] and can only belong to one province.[5] They enjoy a large degree of autonomy in their local administration. Amongst other tasks, they are in charge of urban planning, water supply, lighting, road network, local police, and firefighting.[6]
The organisation of municipalities in Spain is outlined in alocal government law (Spanish:Ley 7/1985, de 2 de abril, Reguladora de las Bases del Régimen Local;transl. Law 7/1985, of 2 April, Regulating the Bases of the Local Administration) passed on 2 April 1985[7] and finalised by an 18 April 1986 royal decree.[8] TheStatute of Autonomy of the Basque Country of 1979 also contains provisions concerning the relations between the municipalities and the autonomous government of the Basque Country.[9] All citizens of Spain are required to register in the municipality in which they reside.[10] Each municipality is a corporation with independentlegal personhood: its governing body is called theayuntamiento (municipal council orcorporation),[11] a term often also used to refer to themunicipal offices (city and town halls). Theayuntamiento is composed of themayor (Spanish:alcalde), thedeputy mayors (tenientes de alcalde) and the plenary assembly (pleno) ofcouncillors (concejales).[12] Municipalities are categorised by population for the purpose of determining the number of councillors: three when the population is up to 100 inhabitants, five for 101–250, seven for 251–1,000, nine for 1,001–2,000, eleven for 2,001–5,000, thirteen for 5,001–10,000, seventeen for 10,001–20,000, twenty-one for 20,001–50,000, and twenty-five for 50,001–100,000.[13] One councillor is added for every additional 100,000 inhabitants, with a further one added when the number of councillors based on this methodology would be even in order to preventtied votes.[14]
The mayor and the deputy mayors are elected by the plenary assembly, which is itself elected byuniversal suffrage.[15] Elections in municipalities with more than 250 inhabitants are carried out following aproportional representation system withclosed lists,[14] whilst those with a population lower than 250 use ablock plurality voting system withopen lists.[16] The plenary assembly must meet periodically at the seat of theayuntamiento, with meetings occurring more or less frequently depending on the population of the municipality: monthly for those whose population is larger than 20,000, once every two months if it ranges between 5,001 and 20,000, and once every three months if it does not exceed 5,000.[17] Manyayuntamientos also have a local governing board (Spanish:junta de gobierno local), which is named by the mayor from amongst the councillors and is required for municipalities of more than 5,000 inhabitants.[12] The board, whose role is to assist the mayor between meetings of the plenary assembly, may not include more than one third of the councillors.[18]
The largest municipality by population in the province of Biscay as of the 2023 Spanish census isBilbao, its capital, with 345,235 residents, while the smallest isArakaldo, with 162 residents.[19] The largest municipality by area isKarrantza Harana/Valle de Carranza, which spans 137.82 km², whileLanestosa is the smallest at 1.14 km².[3]
Name | Population (2023 census)[19] | Population (2011 census)[1] | Population change | Land area (km²)[3] | Population density (2023) |
---|---|---|---|---|---|
Abadiño | 7,720 | 7,350 | +5.0% | 36.05 | 214.1/km2 |
Abanto y Ciérvana-Abanto Zierbena | 9,401 | 9,742 | −3.5% | 16.20 | 580.3/km2 |
Ajangiz | 478 | 456 | +4.8% | 7.13 | 67.0/km2 |
Alonsotegi | 2,959 | 2,838 | +4.3% | 20.22 | 146.3/km2 |
Amorebieta-Etxano | 19,540 | 18,400 | +6.2% | 58.84 | 332.1/km2 |
Amoroto | 392 | 413 | −5.1% | 13.07 | 30.0/km2 |
Arakaldo | 162 | 129 | +25.6% | 2.72 | 59.6/km2 |
Arantzazu | 391 | 361 | +8.3% | 3.54 | 110.5/km2 |
Areatza | 1,238 | 1,224 | +1.1% | 9.12 | 135.7/km2 |
Arrankudiaga | 992 | 954 | +4.0% | 22.70 | 43.7/km2 |
Arratzu | 429 | 385 | +11.4% | 10.06 | 42.6/km2 |
Arrieta | 580 | 549 | +5.6% | 14.62 | 39.7/km2 |
Arrigorriaga | 11,949 | 12,525 | −4.6% | 16.25 | 735.3/km2 |
Artea | 755 | 772 | −2.2% | 12.35 | 61.1/km2 |
Artzentales | 726 | 753 | −3.6% | 36.79 | 19.7/km2 |
Atxondo | 1,368 | 1,428 | −4.2% | 23.37 | 58.5/km2 |
Aulesti | 654 | 672 | −2.7% | 25.56 | 25.6/km2 |
Bakio | 2,813 | 2,588 | +8.7% | 16.59 | 169.6/km2 |
Balmaseda | 7,642 | 7,681 | −0.5% | 22.37 | 341.6/km2 |
Barakaldo | 100,987 | 100,064 | +0.9% | 24.99 | 4,041.1/km2 |
Barrika | 1,542 | 1,523 | +1.2% | 7.74 | 199.2/km2 |
Basauri | 40,430 | 41,777 | −3.2% | 7.01 | 5,767.5/km2 |
Bedia | 1,113 | 976 | +14.0% | 16.37 | 68.0/km2 |
Berango | 7,472 | 6,883 | +8.6% | 8.73 | 855.9/km2 |
Bermeo | 16,911 | 17,092 | −1.1% | 33.81 | 500.2/km2 |
Berriatua | 1,215 | 1,242 | −2.2% | 19.20 | 63.3/km2 |
Berriz | 4,533 | 4,875 | −7.0% | 29.77 | 152.3/km2 |
Bilbao† | 345,235 | 351,356 | −1.7% | 41.34 | 8,351.1/km2 |
Busturia | 1,643 | 1,748 | −6.0% | 20.22 | 81.3/km2 |
Derio | 7,064 | 5,578 | +26.6% | 10.15 | 696.0/km2 |
Dima | 1,497 | 1,364 | +9.8% | 62.41 | 24.0/km2 |
Durango | 29,715 | 28,367 | +4.8% | 10.73 | 2,769.3/km2 |
Ea | 826 | 883 | −6.5% | 14.24 | 58.0/km2 |
Elantxobe | 349 | 409 | −14.7% | 1.80 | 193.9/km2 |
Elorrio | 7,299 | 7,294 | +0.1% | 37.01 | 197.2/km2 |
Erandio | 24,426 | 24,369 | +0.2% | 18.17 | 1,344.3/km2 |
Ereño | 276 | 262 | +5.3% | 10.52 | 26.2/km2 |
Ermua | 15,594 | 16,235 | −3.9% | 6.47 | 2,410.2/km2 |
Errigoiti | 510 | 543 | −6.1% | 16.52 | 30.9/km2 |
Etxebarri | 11,968 | 10,230 | +17.0% | 3.27 | 3,659.9/km2 |
Etxebarria | 783 | 806 | −2.9% | 17.84 | 43.9/km2 |
Forua | 915 | 979 | −6.5% | 7.63 | 119.9/km2 |
Fruiz | 550 | 513 | +7.2% | 5.62 | 97.9/km2 |
Galdakao | 29,309 | 29,153 | +0.5% | 31.47 | 931.3/km2 |
Galdames | 833 | 843 | −1.2% | 44.41 | 18.8/km2 |
Gamiz-Fika | 1,394 | 1,342 | +3.9% | 15.30 | 91.1/km2 |
Garai | 334 | 345 | −3.2% | 7.15 | 46.7/km2 |
Gatika | 1,624 | 1,623 | +0.1% | 17.29 | 93.9/km2 |
Gautegiz Arteaga | 888 | 903 | −1.7% | 13.54 | 65.6/km2 |
Gernika-Lumo | 17,012 | 16,727 | +1.7% | 8.53 | 1,994.4/km2 |
Getxo | 76,297 | 80,252 | −4.9% | 11.87 | 6,427.7/km2 |
Gizaburuaga | 196 | 204 | −3.9% | 6.09 | 32.2/km2 |
Gordexola | 1,681 | 1,728 | −2.7% | 41.30 | 40.7/km2 |
Gorliz | 6,067 | 5,501 | +10.3% | 10.23 | 593.1/km2 |
Güeñes | 6,736 | 6,403 | +5.2% | 41.48 | 162.4/km2 |
Ibarrangelu | 694 | 636 | +9.1% | 15.49 | 44.8/km2 |
Igorre | 4,284 | 4,240 | +1.0% | 17.09 | 250.7/km2 |
Ispaster | 734 | 695 | +5.6% | 22.98 | 31.9/km2 |
Iurreta | 3,733 | 3,852 | −3.1% | 18.86 | 197.9/km2 |
Izurtza | 225 | 275 | −18.2% | 4.37 | 51.5/km2 |
Karrantza Harana/Valle de Carranza | 11,907 | 2,795 | +326.0% | 137.82 | 86.4/km2 |
Kortezubi | 445 | 429 | +3.7% | 11.86 | 37.5/km2 |
Lanestosa | 248 | 265 | −6.4% | 1.14 | 217.5/km2 |
Larrabetzu | 2,056 | 1,979 | +3.9% | 21.54 | 95.5/km2 |
Laukiz | 1,225 | 1,132 | +8.2% | 8.11 | 151.0/km2 |
Leioa | 32,472 | 30,483 | +6.5% | 8.39 | 3,870.3/km2 |
Lekeitio | 7,141 | 7,377 | −3.2% | 1.79 | 3,989.4/km2 |
Lemoa | 3,540 | 3,408 | +3.9% | 15.42 | 229.6/km2 |
Lemoiz | 1,315 | 1,061 | +23.9% | 18.91 | 69.5/km2 |
Lezama | 2,448 | 2,467 | −0.8% | 16.29 | 150.3/km2 |
Loiu | 2,296 | 2,494 | −7.9% | 15.02 | 152.9/km2 |
Mallabia | 1,159 | 1,192 | −2.8% | 23.11 | 50.2/km2 |
Mañaria | 533 | 498 | +7.0% | 17.59 | 30.3/km2 |
Markina-Xemein | 5,021 | 4,941 | +1.6% | 45.32 | 110.8/km2 |
Maruri-Jatabe | 1,069 | 961 | +11.2% | 15.96 | 67.0/km2 |
Mendata | 385 | 381 | +1.0% | 22.43 | 17.2/km2 |
Mendexa | 424 | 437 | −3.0% | 6.93 | 61.2/km2 |
Meñaka | 763 | 746 | +2.3% | 12.49 | 61.1/km2 |
Morga | 415 | 401 | +3.5% | 14.47 | 28.7/km2 |
Mundaka | 1,842 | 1,943 | −5.2% | 4.08 | 451.5/km2 |
Mungia | 17,865 | 16,857 | +6.0% | 44.46 | 401.8/km2 |
Munitibar-Arbatzegi Gerrikaitz | 471 | 434 | +8.5% | 24.31 | 19.4/km2 |
Murueta | 338 | 303 | +11.6% | 5.63 | 60.0/km2 |
Muskiz | 7,342 | 7,518 | −2.3% | 21.01 | 349.5/km2 |
Muxika | 1,516 | 1,467 | +3.3% | 49.87 | 30.4/km2 |
Nabarniz | 269 | 227 | +18.5% | 11.76 | 22.9/km2 |
Ondarroa | 8,207 | 8,799 | −6.7% | 4.30 | 1,908.6/km2 |
Orozko | 2,658 | 2,512 | +5.8% | 102.27 | 26.0/km2 |
Ortuella | 8,537 | 8,440 | +1.1% | 7.96 | 1,072.5/km2 |
Otxandio | 1,324 | 1,300 | +1.8% | 12.39 | 106.9/km2 |
Plentzia | 4,369 | 4,329 | +0.9% | 5.91 | 739.3/km2 |
Portugalete | 44,648 | 47,698 | −6.4% | 3.14 | 14,219.1/km2 |
Santurtzi | 46,089 | 47,101 | −2.1% | 8.87 | 5,196.1/km2 |
Sestao | 27,780 | 28,805 | −3.6% | 3.58 | 7,759.8/km2 |
Sondika | 4,525 | 4,543 | −0.4% | 6.85 | 660.6/km2 |
Sopelana | 14,857 | 12,824 | +15.9% | 8.43 | 1,762.4/km2 |
Sopuerta | 2,721 | 2,570 | +5.9% | 42.56 | 63.9/km2 |
Sukarrieta | 354 | 350 | +1.1% | 1.91 | 185.3/km2 |
Trucios-Turtzioz | 520 | 532 | −2.3% | 25.99 | 20.0/km2 |
Ubide | 179 | 185 | −3.2% | 2.81 | 63.7/km2 |
Ugao-Miraballes | 4,158 | 4,052 | +2.6% | 5.26 | 790.5/km2 |
Urduliz | 5,468 | 3,601 | +51.8% | 7.81 | 700.1/km2 |
Urduña/Orduña | 4,163 | 4,241 | −1.8% | 33.40 | 124.6/km2 |
Usansolo | No data[a] | ||||
Valle de Trápaga-Trapagaran | 11,907 | 12,166 | −2.1% | 12.86 | 925.9/km2 |
Zaldibar | 3,000 | 3,053 | −1.7% | 11.65 | 257.5/km2 |
Zalla | 8,322 | 8,411 | −1.1% | 31.08 | 267.8/km2 |
Zamudio | 3,290 | 3,277 | +0.4% | 18.17 | 181.1/km2 |
Zaratamo | 1,605 | 1,651 | −2.8% | 10.18 | 157.7/km2 |
Zeanuri | 1,248 | 1,299 | −3.9% | 67.22 | 18.6/km2 |
Zeberio | 1,083 | 1,080 | +0.3% | 47.68 | 22.7/km2 |
Zierbena | 1,496 | 1,458 | +2.6% | 12.15 | 123.1/km2 |
Ziortza-Bolibar | 399 | 411 | −2.9% | 18.86 | 21.2/km2 |
Biscay | 1,153,282[21] | 1,156,190[22] | −0.3% | 2,215.55 | 520.5/km2 |
Basque Country | 2,216,302[21] | 2,185,393[22] | +1.4% | 7,092.45 | 312.5/km2 |
Spain | 48,085,361[21] | 46,815,916[22] | +2.7% | 504,755.17 | 95.3/km2 |