| Postal Code | Postal Code Place Name | Autonomous Community | Province |
| 01001 | Vitoria-Gasteiz | Basque Country | Álava |
| 01002 | Vitoria-Gasteiz | Basque Country | Álava |
| 01003 | Vitoria-Gasteiz | Basque Country | Álava |
| 01004 | Vitoria-Gasteiz | Basque Country | Álava |
| 01005 | Vitoria-Gasteiz | Basque Country | Álava |
| 01006 | Vitoria-Gasteiz | Basque Country | Álava |
| 01007 | Vitoria-Gasteiz | Basque Country | Álava |
| 01008 | Vitoria-Gasteiz | Basque Country | Álava |
| 01009 | Vitoria-Gasteiz | Basque Country | Álava |
| 01010 | Vitoria-Gasteiz | Basque Country | Álava |
| 01012 | Vitoria-Gasteiz | Basque Country | Álava |
| 01013 | Vitoria-Gasteiz | Basque Country | Álava |
| 01015 | Vitoria-Gasteiz | Basque Country | Álava |
| 01110 | Campezo/Kanpezu | Basque Country | Álava |
| 01117 | Harana/Valle de Arana | Basque Country | Álava |
| 01120 | Arraia-Maeztu | Basque Country | Álava |
| 01128 | Bernedo | Basque Country | Álava |
| 01129 | Arraia-Maeztu | Basque Country | Álava |
| 01130 | Zuia | Basque Country | Álava |
| 01138 | Zigoitia | Basque Country | Álava |
| 01139 | Zuia | Basque Country | Álava |
| 01160 | Aramaio | Basque Country | Álava |
| 01165 | Aramaio | Basque Country | Álava |
| 01169 | Aramaio | Basque Country | Álava |
| 01170 | Legutio | Basque Country | Álava |
| 01191 | Vitoria-Gasteiz | Basque Country | Álava |
| 01192 | Vitoria-Gasteiz | Basque Country | Álava |
| 01193 | Vitoria-Gasteiz | Basque Country | Álava |
| 01194 | Vitoria-Gasteiz | Basque Country | Álava |
| 01195 | Vitoria-Gasteiz | Basque Country | Álava |
| 01196 | Vitoria-Gasteiz | Basque Country | Álava |
| 01200 | Salvatierra/Agurain | Basque Country | Álava |
| 01206 | Barrundia | Basque Country | Álava |
| 01207 | San Millán/Donemiliaga | Basque Country | Álava |
| 01208 | Asparrena | Basque Country | Álava |
| 01211 | Berantevilla | Basque Country | Álava |
| 01212 | Zambrana | Basque Country | Álava |
| 01213 | Lantarón | Basque Country | Álava |
| 01216 | Bernedo | Basque Country | Álava |
| 01220 | Armiñón | Basque Country | Álava |
| 01230 | Iruña Oka/Iruña de Oca | Basque Country | Álava |
| 01240 | Alegría-Dulantzi | Basque Country | Álava |
| 01250 | Asparrena | Basque Country | Álava |
| 01260 | Asparrena | Basque Country | Álava |
| 01300 | Laguardia | Basque Country | Álava |
| 01306 | Lapuebla de Labarca | Basque Country | Álava |
| 01307 | Villabuena de Álava/Eskuernaga | Basque Country | Álava |
| 01308 | Lanciego/Lantziego | Basque Country | Álava |
| 01309 | Leza | Basque Country | Álava |
| 01320 | Oyón-Oion | Basque Country | Álava |
| 01321 | Laguardia | Basque Country | Álava |
| 01322 | Oyón-Oion | Basque Country | Álava |
| 01330 | Labastida/Bastida | Basque Country | Álava |
| 01340 | Elciego | Basque Country | Álava |
| 01400 | Laudio/Llodio | Basque Country | Álava |
| 01408 | Ayala/Aiara | Basque Country | Álava |
| 01409 | Okondo | Basque Country | Álava |
| 01420 | Erriberagoitia/Ribera Alta | Basque Country | Álava |
| 01423 | Lantarón | Basque Country | Álava |
| 01426 | Valdegovía/Gaubea | Basque Country | Álava |
| 01427 | Valdegovía/Gaubea | Basque Country | Álava |
| 01428 | Erriberagoitia/Ribera Alta | Basque Country | Álava |
| 01430 | Kuartango | Basque Country | Álava |
| 01439 | Kuartango | Basque Country | Álava |
| 01440 | Urkabustaiz | Basque Country | Álava |
| 01449 | Urkabustaiz | Basque Country | Álava |
| 01450 | Amurrio | Basque Country | Álava |
| 01468 | Amurrio | Basque Country | Álava |
| 01470 | Amurrio | Basque Country | Álava |
| 01474 | Artziniega | Basque Country | Álava |
| 01476 | Ayala/Aiara | Basque Country | Álava |
| 01477 | Ayala/Aiara | Basque Country | Álava |
| 01478 | Ayala/Aiara | Basque Country | Álava |
| 01479 | Ayala/Aiara | Basque Country | Álava |
| 01510 | Vitoria-Gasteiz | Basque Country | Álava |
| 01520 | Arratzua-Ubarrundia | Basque Country | Álava |
| 20001 | Donostia/San Sebastián | Basque Country | Gipuzkoa |
| 20002 | Donostia/San Sebastián | Basque Country | Gipuzkoa |
| 20003 | Donostia/San Sebastián | Basque Country | Gipuzkoa |
| 20004 | Donostia/San Sebastián | Basque Country | Gipuzkoa |
| 20005 | Donostia/San Sebastián | Basque Country | Gipuzkoa |
| 20006 | Donostia/San Sebastián | Basque Country | Gipuzkoa |
| 20007 | Donostia/San Sebastián | Basque Country | Gipuzkoa |
| 20008 | Donostia/San Sebastián | Basque Country | Gipuzkoa |
| 20009 | Donostia/San Sebastián | Basque Country | Gipuzkoa |
| 20010 | Donostia/San Sebastián | Basque Country | Gipuzkoa |
| 20011 | Donostia/San Sebastián | Basque Country | Gipuzkoa |
| 20012 | Donostia/San Sebastián | Basque Country | Gipuzkoa |
| 20013 | Donostia/San Sebastián | Basque Country | Gipuzkoa |
| 20014 | Donostia/San Sebastián | Basque Country | Gipuzkoa |
| 20015 | Donostia/San Sebastián | Basque Country | Gipuzkoa |
| 20016 | Donostia/San Sebastián | Basque Country | Gipuzkoa |
| 20017 | Donostia/San Sebastián | Basque Country | Gipuzkoa |
| 20018 | Donostia/San Sebastián | Basque Country | Gipuzkoa |
| 20100 | Errenteria | Basque Country | Gipuzkoa |
| 20110 | Pasaia | Basque Country | Gipuzkoa |
| 20115 | Astigarraga | Basque Country | Gipuzkoa |
| 20120 | Hernani | Basque Country | Gipuzkoa |
| 20128 | Hernani | Basque Country | Gipuzkoa |
| 20130 | Urnieta | Basque Country | Gipuzkoa |
| 20140 | Andoain | Basque Country | Gipuzkoa |
| 20150 | Villabona | Basque Country | Gipuzkoa |
| 20159 | Asteasu | Basque Country | Gipuzkoa |
| 20160 | Lasarte-Oria | Basque Country | Gipuzkoa |
| 20170 | Usurbil | Basque Country | Gipuzkoa |
| 20180 | Oiartzun | Basque Country | Gipuzkoa |
| 20200 | Beasain | Basque Country | Gipuzkoa |
| 20210 | Lazkao | Basque Country | Gipuzkoa |
| 20211 | Ataun | Basque Country | Gipuzkoa |
| 20212 | Olaberria | Basque Country | Gipuzkoa |
| 20213 | Idiazabal | Basque Country | Gipuzkoa |
| 20214 | Segura | Basque Country | Gipuzkoa |
| 20215 | Zegama | Basque Country | Gipuzkoa |
| 20216 | Ormaiztegi | Basque Country | Gipuzkoa |
| 20217 | Gabiria | Basque Country | Gipuzkoa |
| 20218 | Beasain | Basque Country | Gipuzkoa |
| 20220 | Legazpi | Basque Country | Gipuzkoa |
| 20230 | Legazpi | Basque Country | Gipuzkoa |
| 20240 | Ordizia | Basque Country | Gipuzkoa |
| 20247 | Zaldibia | Basque Country | Gipuzkoa |
| 20248 | Arama | Basque Country | Gipuzkoa |
| 20249 | Itsasondo | Basque Country | Gipuzkoa |
| 20250 | Legorreta | Basque Country | Gipuzkoa |
| 20259 | Baliarrain | Basque Country | Gipuzkoa |
| 20260 | Alegia | Basque Country | Gipuzkoa |
| 20267 | Tolosa | Basque Country | Gipuzkoa |
| 20268 | Altzo | Basque Country | Gipuzkoa |
| 20269 | Abaltzisketa | Basque Country | Gipuzkoa |
| 20270 | Anoeta | Basque Country | Gipuzkoa |
| 20271 | Irura | Basque Country | Gipuzkoa |
| 20280 | Hondarribia | Basque Country | Gipuzkoa |
| 20301 | Irun | Basque Country | Gipuzkoa |
| 20302 | Irun | Basque Country | Gipuzkoa |
| 20303 | Irun | Basque Country | Gipuzkoa |
| 20304 | Irun | Basque Country | Gipuzkoa |
| 20305 | Irun | Basque Country | Gipuzkoa |
| 20400 | Tolosa | Basque Country | Gipuzkoa |
| 20490 | Lizartza | Basque Country | Gipuzkoa |
| 20491 | Gaztelu | Basque Country | Gipuzkoa |
| 20492 | Berastegi | Basque Country | Gipuzkoa |
| 20493 | Berrobi | Basque Country | Gipuzkoa |
| 20494 | Hernialde | Basque Country | Gipuzkoa |
| 20495 | Albiztur | Basque Country | Gipuzkoa |
| 20496 | Bidania-Goiatz | Basque Country | Gipuzkoa |
| 20500 | Arrasate/Mondragón | Basque Country | Gipuzkoa |
| 20530 | Eskoriatza | Basque Country | Gipuzkoa |
| 20540 | Eskoriatza | Basque Country | Gipuzkoa |
| 20550 | Aretxabaleta | Basque Country | Gipuzkoa |
| 20560 | Oñati | Basque Country | Gipuzkoa |
| 20567 | Oñati | Basque Country | Gipuzkoa |
| 20568 | Oñati | Basque Country | Gipuzkoa |
| 20569 | Oñati | Basque Country | Gipuzkoa |
| 20570 | Bergara | Basque Country | Gipuzkoa |
| 20577 | Antzuola | Basque Country | Gipuzkoa |
| 20578 | Bergara | Basque Country | Gipuzkoa |
| 20579 | Bergara | Basque Country | Gipuzkoa |
| 20580 | Bergara | Basque Country | Gipuzkoa |
| 20590 | Soraluze-Placencia de las Armas | Basque Country | Gipuzkoa |
| 20600 | Eibar | Basque Country | Gipuzkoa |
| 20690 | Elgeta | Basque Country | Gipuzkoa |
| 20700 | Zumarraga | Basque Country | Gipuzkoa |
| 20709 | Ezkio-Itsaso | Basque Country | Gipuzkoa |
| 20710 | Zumarraga | Basque Country | Gipuzkoa |
| 20720 | Azkoitia | Basque Country | Gipuzkoa |
| 20730 | Azpeitia | Basque Country | Gipuzkoa |
| 20737 | Errezil | Basque Country | Gipuzkoa |
| 20738 | Azpeitia | Basque Country | Gipuzkoa |
| 20739 | Beizama | Basque Country | Gipuzkoa |
| 20740 | Zestoa | Basque Country | Gipuzkoa |
| 20749 | Zestoa | Basque Country | Gipuzkoa |
| 20750 | Zumaia | Basque Country | Gipuzkoa |
| 20759 | Zumaia | Basque Country | Gipuzkoa |
| 20800 | Zarautz | Basque Country | Gipuzkoa |
| 20808 | Getaria | Basque Country | Gipuzkoa |
| 20809 | Aia | Basque Country | Gipuzkoa |
| 20810 | Orio | Basque Country | Gipuzkoa |
| 20820 | Deba | Basque Country | Gipuzkoa |
| 20829 | Deba | Basque Country | Gipuzkoa |
| 20830 | Mutriku | Basque Country | Gipuzkoa |
| 20850 | Mendaro | Basque Country | Gipuzkoa |
| 20860 | Elgoibar | Basque Country | Gipuzkoa |
| 20870 | Elgoibar | Basque Country | Gipuzkoa |
| 48001 | Bilbao | Basque Country | Biscay |
| 48002 | Bilbao | Basque Country | Biscay |
| 48003 | Bilbao | Basque Country | Biscay |
| 48004 | Bilbao | Basque Country | Biscay |
| 48005 | Bilbao | Basque Country | Biscay |
| 48006 | Bilbao | Basque Country | Biscay |
| 48007 | Bilbao | Basque Country | Biscay |
| 48008 | Bilbao | Basque Country | Biscay |
| 48009 | Bilbao | Basque Country | Biscay |
| 48010 | Bilbao | Basque Country | Biscay |
| 48011 | Bilbao | Basque Country | Biscay |
| 48012 | Bilbao | Basque Country | Biscay |
| 48013 | Bilbao | Basque Country | Biscay |
| 48014 | Bilbao | Basque Country | Biscay |
| 48015 | Bilbao | Basque Country | Biscay |
| 48100 | Mungia | Basque Country | Biscay |
| 48110 | Gatika | Basque Country | Biscay |
| 48111 | Laukiz | Basque Country | Biscay |
| 48112 | Maruri-Jatabe | Basque Country | Biscay |
| 48113 | Gamiz-Fika | Basque Country | Biscay |
| 48114 | Arrieta | Basque Country | Biscay |
| 48115 | Morga | Basque Country | Biscay |
| 48116 | Fruiz | Basque Country | Biscay |
| 48120 | Lemoiz | Basque Country | Biscay |
| 48130 | Bakio | Basque Country | Biscay |
| 48140 | Igorre | Basque Country | Biscay |
| 48141 | Dima | Basque Country | Biscay |
| 48142 | Artea | Basque Country | Biscay |
| 48143 | Areatza | Basque Country | Biscay |
| 48144 | Zeanuri | Basque Country | Biscay |
| 48145 | Ubide | Basque Country | Biscay |
| 48150 | Sondika | Basque Country | Biscay |
| 48160 | Derio | Basque Country | Biscay |
| 48170 | Zamudio | Basque Country | Biscay |
| 48180 | Loiu | Basque Country | Biscay |
| 48190 | Sopuerta | Basque Country | Biscay |
| 48191 | Galdames | Basque Country | Biscay |
| 48192 | Gordexola | Basque Country | Biscay |
| 48194 | Gordexola | Basque Country | Biscay |
| 48195 | Larrabetzu | Basque Country | Biscay |
| 48196 | Lezama | Basque Country | Biscay |
| 48200 | Durango | Basque Country | Biscay |
| 48210 | Otxandio | Basque Country | Biscay |
| 48211 | Abadiño | Basque Country | Biscay |
| 48212 | Mañaria | Basque Country | Biscay |
| 48213 | Izurtza | Basque Country | Biscay |
| 48215 | Iurreta | Basque Country | Biscay |
| 48220 | Abadiño | Basque Country | Biscay |
| 48230 | Elorrio | Basque Country | Biscay |
| 48240 | Berriz | Basque Country | Biscay |
| 48249 | Berriz | Basque Country | Biscay |
| 48250 | Zaldibar | Basque Country | Biscay |
| 48260 | Ermua | Basque Country | Biscay |
| 48269 | Mallabia | Basque Country | Biscay |
| 48270 | Markina-Xemein | Basque Country | Biscay |
| 48276 | Markina-Xemein | Basque Country | Biscay |
| 48277 | Etxebarria | Basque Country | Biscay |
| 48278 | Markina-Xemein | Basque Country | Biscay |
| 48280 | Lekeitio | Basque Country | Biscay |
| 48287 | Ea | Basque Country | Biscay |
| 48288 | Ispaster | Basque Country | Biscay |
| 48289 | Mendexa | Basque Country | Biscay |
| 48291 | Atxondo | Basque Country | Biscay |
| 48300 | Gernika-Lumo | Basque Country | Biscay |
| 48309 | Errigoiti | Basque Country | Biscay |
| 48310 | Elantxobe | Basque Country | Biscay |
| 48311 | Ibarrangelu | Basque Country | Biscay |
| 48312 | Nabarniz | Basque Country | Biscay |
| 48313 | Ereño | Basque Country | Biscay |
| 48314 | Gautegiz Arteaga | Basque Country | Biscay |
| 48315 | Kortezubi | Basque Country | Biscay |
| 48320 | Ajangiz | Basque Country | Biscay |
| 48330 | Lemoa | Basque Country | Biscay |
| 48340 | Amorebieta-Etxano | Basque Country | Biscay |
| 48350 | Busturia | Basque Country | Biscay |
| 48360 | Mundaka | Basque Country | Biscay |
| 48370 | Bermeo | Basque Country | Biscay |
| 48380 | Aulesti | Basque Country | Biscay |
| 48381 | Munitibar-Arbatzegi Gerrikaitz | Basque Country | Biscay |
| 48382 | Mendata | Basque Country | Biscay |
| 48383 | Arratzu | Basque Country | Biscay |
| 48390 | Bedia | Basque Country | Biscay |
| 48391 | Muxika | Basque Country | Biscay |
| 48392 | Muxika | Basque Country | Biscay |
| 48393 | Forua | Basque Country | Biscay |
| 48394 | Murueta | Basque Country | Biscay |
| 48395 | Sukarrieta | Basque Country | Biscay |
| 48410 | Orozko | Basque Country | Biscay |
| 48419 | Orozko | Basque Country | Biscay |
| 48450 | Etxebarri | Basque Country | Biscay |
| 48460 | Urduña/Orduña | Basque Country | Biscay |
| 48480 | Arrigorriaga | Basque Country | Biscay |
| 48490 | Ugao-Miraballes | Basque Country | Biscay |
| 48498 | Arakaldo | Basque Country | Biscay |
| 48499 | Zeberio | Basque Country | Biscay |
| 48500 | Abanto y Ciérvana-Abanto Zierbena | Basque Country | Biscay |
| 48508 | Zierbena | Basque Country | Biscay |
| 48510 | Valle de Trápaga-Trapagaran | Basque Country | Biscay |
| 48520 | Valle de Trápaga-Trapagaran | Basque Country | Biscay |
| 48530 | Ortuella | Basque Country | Biscay |
| 48550 | Muskiz | Basque Country | Biscay |
| 48600 | Sopela | Basque Country | Biscay |
| 48610 | Urduliz | Basque Country | Biscay |
| 48620 | Plentzia | Basque Country | Biscay |
| 48630 | Gorliz | Basque Country | Biscay |
| 48640 | Berango | Basque Country | Biscay |
| 48650 | Barrika | Basque Country | Biscay |
| 48700 | Ondarroa | Basque Country | Biscay |
| 48710 | Berriatua | Basque Country | Biscay |
| 48800 | Balmaseda | Basque Country | Biscay |
| 48810 | Alonsotegi | Basque Country | Biscay |
| 48820 | Güeñes | Basque Country | Biscay |
| 48830 | Güeñes | Basque Country | Biscay |
| 48840 | Güeñes | Basque Country | Biscay |
| 48850 | Zalla | Basque Country | Biscay |
| 48860 | Zalla | Basque Country | Biscay |
| 48869 | Zalla | Basque Country | Biscay |
| 48870 | Sopuerta | Basque Country | Biscay |
| 48879 | Artzentales | Basque Country | Biscay |
| 48880 | Trucios-Turtzioz | Basque Country | Biscay |
| 48890 | Karrantza Harana/Valle de Carranza | Basque Country | Biscay |
| 48891 | Karrantza Harana/Valle de Carranza | Basque Country | Biscay |
| 48895 | Karrantza Harana/Valle de Carranza | Basque Country | Biscay |
| 48901 | Barakaldo | Basque Country | Biscay |
| 48902 | Barakaldo | Basque Country | Biscay |
| 48903 | Barakaldo | Basque Country | Biscay |
| 48910 | Sestao | Basque Country | Biscay |
| 48920 | Portugalete | Basque Country | Biscay |
| 48930 | Getxo | Basque Country | Biscay |
| 48940 | Leioa | Basque Country | Biscay |
| 48950 | Erandio | Basque Country | Biscay |
| 48960 | Galdakao | Basque Country | Biscay |
| 48970 | Basauri | Basque Country | Biscay |
| 48980 | Santurtzi | Basque Country | Biscay |
| 48991 | Getxo | Basque Country | Biscay |
| 48992 | Getxo | Basque Country | Biscay |
| 48993 | Getxo | Basque Country | Biscay |