| Postal Code | Postal Code Place Name | Autonomous Community | Province |
|---|
| 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 |