| Code | Name | Region |
|---|---|---|
| CHLNG | Lengnau | BE |
| CHLGO | Lengwil-oberhofen | TG |
| CHLNK | Lenk | BE |
| CHLBG | Lenzburg | AG |
| CHLNZ | Lenzerheide | GR |
| CHGEL | Lancy | GE |
| CHLQU | Landquart | GR |
| CHLAD | Langendorf | SO |
| CHLAN | Langenthal | BE |
| CHLGU | Langnau | BE |
| CHLNA | Langnau Im Emmental | BE |
| CHLRB | Langrickenbach | TG |
| CHLNN | Lauenen | BE |
| CHLFN | Laufen | BL |
| CHLAF | Laufenburg | AG |
| CHLPN | Laupen | ZH |
| CHLAU | Lausanne | VD |
| CHLAS | Lausen | BL |
| CHLVN | Lavin | GR |
| CHLAV | Lavorgo | TI |
| CHBRS | Le Brassus | VD |
| CHBRY | Le Bry | FR |
| CHLCA | Le Chable | VS |
| CHCGT | Le Chalet-a-gobet | VD |
| CHCRE | Le Cret | FR |
| CHLAB | La Brevine | NE |
| CHLCF | La Chaux-de-fonds | NE |
| CHCDM | La Chaux-du-milieu | NE |
| CHLCV | La Conversion | VD |
| CHCAF | La Cote-aux-fees | NE |
| CHLCR | La Croix-de-rozon | GE |
| CHLNE | La Neuveville | BE |
| CHPLN | La Plaine | GE |
| CHG2E | La Praille | GE |
| CHSGN | La Sagne | NE |
| CHLSZ | La Sarraz | VD |
| CHSOZ | La Sonnaz | FR |
| CHVTP | La Tour-de-peilz | VD |
| CHTTR | La Tour-de-treme | FR |
| CHABB | L'abbaye | VD |
| CHLAH | Lachen | AR |
| CHLHN | Lachen | SZ |
| CHLAL | Lalden | VS |
| CHLBN | Lamboing | BE |
| CHLOE | Lamone | TI |
| CHKTN | Kloten | ZH |
| CHKNA | Knonau | ZH |
| CHLEN | Koblenz | AG |
| CHK3L | Kollbrunn | ZH |
| CHKOL | Kolliken | AG |