Código Postal Guipúzcoa (ss)
| Código Postal | Ciudad | X | Y |
 | 20700 | Zumarraga | 43.0883 | -2.3138 |
| | 20750 | Zumaia | 43.2953 | -2.2532 |
| | 20569 | Zubillaga | 43.0596 | -2.4409 |
| | 20160 | Zubieta | 43.2709 | -2.0493 |
| | 20210 | Zubierreka | 43.023 | -2.1772 |
| | 20749 | Zubialde | 43.2614 | -2.2366 |
| | 20159 | Zizurkil | 43.1915 | -2.0949 |
| | 20280 | Zimizarga | 43.3643 | -1.8092 |
| | 20120 | Zikuñaga | 43.2593 | -1.9637 |
| | 20740 | Zestoa | 43.2398 | -2.257 |
| | 20214 | Zerain | 43.0119 | -2.2735 |
| | 20215 | Zegama | 42.9748 | -2.2918 |
| | 20530 | Zarimutz | 43.004 | -2.5632 |
| | 20800 | Zarautz | 43.2859 | -2.1702 |
| | 20569 | Zañartu | 43.0356 | -2.4406 |
| | 20247 | Zaldibia | 43.0377 | -2.1502 |
| | 20150 | Villabona | 43.1853 | -2.0532 |
| | 20170 | Usurbil | 43.2719 | -2.0483 |
| | 20400 | Usabal | 43.1209 | -2.0838 |
| | 20213 | Urtsuaran | 42.9707 | -2.2448 |
| | 20800 | Urteta | 43.2642 | -2.1666 |
| | 20569 | Urrexola | 43.0157 | -2.4484 |
| | 20700 | Urretxu | 43.0912 | -2.318 |
| | 20738 | Urrestilla | 43.1586 | -2.2454 |
| | 20130 | Urnieta | 43.2475 | -1.9893 |
| | 20400 | Urkizu | 43.1328 | -2.1067 |
| | 20568 | Uribarri | 43.014 | -2.4241 |
| | 20800 | Urdaneta | 43.2476 | -2.1986 |
| | 20170 | Urdaiaga | 43.2672 | -2.061 |
| | 20159 | Upazan | 43.2099 | -2.0963 |
| | 20200 | Ugartemendi | 43.043 | -2.1957 |
| | 20268 | Ugarte | 43.0679 | -2.0838 |
| | 20180 | Ugaldetxo | 43.299 | -1.8735 |
| | 20500 | Udala | 43.0791 | -2.512 |
| | 20579 | Ubera | 43.1336 | -2.4606 |
| | 20170 | Txikierdi | 43.2812 | -2.0272 |
| | 20400 | Txarama | 43.1145 | -2.0682 |
| | 20569 | Torreauzo | 43.0436 | -2.4373 |
| | 20400 | Tolosa | 43.1354 | -2.0785 |
| | 20220 | Telleriarte | 43.0281 | -2.3387 |
| | 20590 | Soraluze | 43.1727 | -2.4118 |
| | 20140 | Sorabilla | 43.2091 | -2.0344 |
| | 20210 | Senpere | 43.0432 | -2.1897 |
| | 20214 | Segura | 43.0067 | -2.2549 |
| | 20569 | Santxolopeztegi | 43.0517 | -2.4412 |
| | 20810 | Santio erreka | 43.2656 | -2.1204 |
| | 20400 | Santa lutzia | 43.1479 | -2.0666 |
| | 20120 | Santa barbara | 43.2638 | -1.9894 |
| | 20808 | San prudentzio | 43.3035 | -2.2198 |
| | 20211 | San martin | 43.0056 | -2.1764 |
| | 20211 | San gregorio | 42.9788 | -2.1815 |
| | 20400 | San esteban | 43.134 | -2.0786 |
| | 20400 | San blas | 43.1241 | -2.072 |
| | 20870 | Sallobente ermuaran | 43.1978 | -2.3866 |
| | 20218 | Salbatore | 43.0506 | -2.2319 |
| | 20749 | Saiatz | 43.2648 | -2.221 |
| | 20280 | Puntalea | 43.362 | -1.7871 |
| | 20280 | Portua | 43.3681 | -1.7949 |
| | 20850 | Plaza | 43.1003 | -2.7487 |
| | 20590 | Placencia de las armas | 43.1727 | -2.4135 |
| | 20110 | Pasaia | 43.3208 | -1.9213 |
| | 20110 | Pasai san pedro | 43.3232 | -1.9308 |
| | 20110 | Pasai donibane | 43.3241 | -1.917 |
| | 20110 | Pasai antxo | 43.3166 | -1.9193 |
| | 20128 | Pagoaga | 43.2204 | -1.9195 |
| | 20580 | Osintxu | 43.1567 | -2.4073 |
| | 20120 | Osinaga | 43.2476 | -1.9616 |
| | 20550 | Oro | 43.0358 | -2.4933 |
| | 20720 | Ormaolamendi | 43.187 | -2.2911 |
| | 20216 | Ormaiztegi | 43.0419 | -2.2564 |
| | 20810 | Orio | 43.2775 | -2.1258 |
| | 20160 | Oria | 43.2559 | -2.0172 |
| | 20490 | Orexa | 43.0933 | -2.0101 |
| | 20269 | Orendain | 43.0778 | -2.1106 |
| | 20240 | Ordizia | 43.0551 | -2.1777 |
Final 75 primeros resultados (295 Ciudades en total)