Postal codes in Switzerland

The postal codes of Swiss cantons:
- 1xxx - Region Western Switzerland (South)
    - 10xx - Region Lausanne, Echallens (North-West)
    - 11xx - Region Morges, Rolle
    - 12xx - Canton of Geneva and Region Nyon
    - 13xx - Region between Lausanne and Yverdon, Jura side (Cossonay, Orbe, Vallorbe)
    - 14xx - Yverdon, Estavayer-le-Lac (VD/FR)
    - 15xx - Moudon, Lucens, Avenches (VD/FR)
    - 16xx - Romont, Bulle (VD/FR)
    - 17xx - Region Fribourg to Lake Murten (Münchenwiler)
    - 18xx - Eastern shore of Lake Geneva (Vevey, Montreux), Chablais (Aigle, Monthey, St. Maurice VD/VS)
    - 19xx - Lower Valais (Martigny, Sion) without Region Sierre
- 2xxx - Region Western Switzerland (North)
    - 20xx - Region Neuchâtel
    - 21xx - Val de Travers NE
    - 22xx - Upper Val de Ruz,
    - 23xx - La Chaux-de-Fonds, Franches-Montagnes
    - 24xx - Le Locle, La Sagne
    - 25xx - Region Biel/Bienne, Lake Biel, Grenchen
    - 26xx - Vallon de St. Imier
    - 27xx - Bernese Jura (Tavannes, Tramelan, Moutier, Franches Montagnes)
    - 28xx - Delémont
    - 29xx - Ajoie (Porrentruy)
- 3xxx - Region Berne/Upper Valais
    - 30xx - City of Bern and agglomeration
    - 31xx - Southern agglomeration of Berne
    - 32xx - Seeland (Aarberg, Ins, Kerzers, Lyss)
    - 33xx - Region between Berne and Solothurn
    - 34xx - Region Burgdorf, Oberaargau (except Langenthal)
    - 35xx - Emmental
    - 36xx - Region Thun
    - 37xx - Region Spiez, Simmental
    - 38xx - Region Interlaken, Haslital
    - 39xx - Upper Valais with region Sierre, Crans Montana
- 4xxx - Region Basel
    - 40xx - City of Basel
    - 41xx - Leimental, Birstal, Riehen, Bettingen, Pratteln
    - 42xx - Laufental, Schwarzbubenland
    - 43xx - Western Fricktal (Rheinfelden, Stein AG)
    - 44xx - Basel-Country
    - 45xx - Region Solothurn
    - 46xx - Region Olten
    - 47xx - Region Oensingen, Balsthal
    - 48xx - Region Zofingen
    - 49xx - Region Langenthal
- 5xxx - Region Aarau
    - 50xx - City of Aarau and Region, eastern Fricktal (Frick, Laufenburg)
    - 51xx - Region Wildegg, Schinznach
    - 52xx - Region Brugg, Mettauertal
    - 53xx - Region Turgi to Koblenz
    - 54xx - Region Baden, Wettingen
    - 55xx - Region Mellingen
    - 56xx - Region Lenzburg, Wohlen, Bremgarten, Muri (Freiamt)
    - 57xx - Region Kulm, Beinwil, Kölliken, Safenwil
- 6xxx - Region Central Switzerland (Innerschweiz), Tessin
    - 60xx - Region Lucerne, Obwalden
    - 61xx - Entlebuch, Willisau
    - 62xx - Region Sempach, Sursee, Hochdorf
    - 63xx - Canton of Zug, Nidwalden
    - 64xx - Canton of Schwyz (except Ausserschwyz), Canton of Uri
    - 65xx - Region Bellinzona, Misox, Val Calanca (GR)
    - 66xx - Locarno, Valle Maggia, Val Verzasca
    - 67xx - Leventina, Val Blenio
    - 68xx - Mendrisotto
    - 69xx - Region Lugano
- 7xxx - Region Graubünden
    - 70xx - Chur, Schanfigg (Arosa), Domat/Ems, Flims
    - 71xx - Bündner Oberland
    - 72xx - Prättigau, Davos
    - 73xx - Bündner Herrschaft, Landquart, Sargans
    - 74xx - Hinterrhein, Albula
    - 75xx - Engadin, Val Müstair
    - 76xx - Bergell
    - 77xx - Poschiavo
- 8xxx - Region Zürich
    - 80xx - City of Zürich
    - 81xx - Region Zürcher Unterland
    - 82xx - Region Schaffhausen, Kreuzlingen
    - 83xx - Kloten, Zürcher Oberland, Hinwil, Hinterthurgau
    - 84xx - Region Winterthur, Tösstal
    - 85xx - Region Frauenfeld, Weinfelden, Amriswil, Romanshorn
    - 86xx - Region Dübendorf, Zürcher Oberland, See (SG)
    - 87xx - Region Right shore of Lake Zürich, Gaster/See (SG), Canton Glarus
    - 88xx - Region Linkes Zürichseeufer, Ausserschwyz (March, Höfe, Einsiedeln SZ), Glarner Unterland, Sarganserland/Lake Walen
    - 89xx - Region Limmattal, Albis, Knonauer Amt, Kelleramt (eastermost Aargau)
- 9xxx - Region Eastern Switzerland (Ostschweiz)
    - 90xx - Region St. Gallen, Appenzell
    - 91xx - Region Herisau
    - 92xx - Region Gossau, Flawil, Uzwil, Bischofszell
    - 93xx - Region Arbon
    - 94xx - Region Rorschach, Rheintal, Liechtenstein
    - 95xx - Region Wil
    - 96xx - Toggenburg