| Code | Name | Region |
|---|---|---|
| CHGRO | Grossaffoltern | BE |
| CHGWG | Grosswangen | LU |
| CHGRR | Grub | AR |
| CHGNG | Gruningen | ZH |
| CHGRS | Grusch | GR |
| CHGTG | Glattbrugg | ZH |
| CHGFN | Glattfelden | ZH |
| CHGAK | Glattpark | ZH |
| CHGLO | Glovelier | JU |
| CHGLD | Goldach | SG |
| CHGOL | Goldau | SZ |
| CHGIN | Goldingen | SG |
| CHGWD | Gommiswald | SG |
| CHG7W | Gondiswil | BE |
| CHGON | Gondo | VS |
| CHAGU | Gontenschwil | AG |
| CHGOR | Gordola | TI |
| CHGRG | Gorgier | NE |
| CHZHH | Gossau | SG |
| CHGOS | Gossau | ZH |
| CHGTB | Gottlieben | TG |
| CHGRB | Grabs | SG |
| CHGFR | Grafenried | BE |
| CHGNA | Grancia | TI |
| CHGL2 | Grand Lancy | GE |
| CHGSR | Genestrerio | TI |
| CHGVA | Geneve | GE |
| CHGNL | Genolier | VD |
| CHGNT | Genthod | GE |
| CHGFG | Gerlafingen | SO |
| CHGDW | Geroldswil | ZH |
| CHGER | Gersau | SZ |
| CHLL4 | Gettnau | LU |
| CHWSG | Gibswill | ZH |
| CHGLL | Gilly | VD |
| CHGIS | Gingins | VD |
| CHTGO | Giornico | TI |
| CHGOF | Gipf-oberfrick | AG |
| CHGIK | Gisikon | |
| CHGBS | Giubiasco | TI |
| CHGSZ | Givisiez | FR |
| CHGIV | Givrins | VD |
| CHGAD | Gland | VD |
| CHGLA | Glarus | GL |
| CHFRD | Freidorf | BL |
| CHFRE | Freidorf | TG |
| CHFBH | Freienbach | SZ |
| CHFSI | Freienstein | ZH |
| CHFKD | Frenkendorf | BL |
| CHFRB | Fribourg | FR |