| Code | Name | Region |
|---|---|---|
| CHKAN | Kandersteg | BE |
| CHKAA | Kappel Am Albis | ZH |
| CHKAP | Kappelen | BE |
| CHKFO | Kaufdorf | BE |
| CHKSZ | Kehrsatz | BE |
| CHHUN | Hunenberg | ZG |
| CHHWN | Huntwangen | ZH |
| CHHZW | Hunzenschwil | AG |
| CHHTT | Huttikon | ZH |
| CHHUT | Huttlingen | TG |
| CHHWL | Huttwil | BE |
| CHHWI | Huttwilen | TG |
| CHXZX | Ibach | SZ |
| CHILZ | Ilanz | GR |
| CHILG | Illgau | SZ |
| CHILL | Illnau-effretikon | ZH |
| CHIMM | Immensee | SZ |
| CHINS | Ins | BE |
| CHINT | Interlaken | BE |
| CHINW | Inwil | LU |
| CHIPS | Ipsach | BE |
| CHIRA | Iragna | TI |
| CHISL | Islikon | TG |
| CHBIN | Itingen | BL |
| CHITG | Ittigen | BE |
| CHHDK | Hindelbank | BE |
| CHHFO | Hinterforst | SG |
| CHHNW | Hinwil | ZH |
| CHHHT | Hirschthal | AG |
| CHHZL | Hirzel | ZH |
| CHHTU | Hittnau | ZH |
| CHHTK | Hitzkirch | LU |
| CHHOC | Hochdorf | LU |
| CHHO7 | Hochfelden | ZH |
| CHHOF | Hofstatt | |
| CHHOH | Hohenrain | LU |
| CHHOL | Holderbank | AG |
| CHHSN | Holstein | BL |
| CHHOM | Hombrechtikon | ZH |
| CHHNU | Honau | |
| CHHOE | Horgen | ZH |
| CHHRH | Horhausen | TG |
| CHHRI | Hori | ZH |
| CHHOR | Horn | TG |
| CHHRW | Horw | LU |
| CHHTE | Hauterive | NE |
| CHHED | Hedingen | AG |
| CHHEE | Heerbrugg | SG |
| CHHGA | Hegnau | ZH |
| CHHEI | Heiden | AR |