| Code | Name | Region |
|---|---|---|
| CHDPL | Doppleschwand | LU |
| CHDRZ | Dorenaz | VS |
| CHDOR | Dornach | SO |
| CHDOC | Dotnacht | TG |
| CHDON | Dallikon | ZH |
| CHDNK | Daniken | SO |
| CHDWL | Dattwil | AG |
| CHDVD | Davos Dorf | GR |
| CHDVG | Davos Glaris | GR |
| CHDPZ | Davos Platz | GR |
| CHDGS | Degersheim | SG |
| CHDEI | Deitingen | SO |
| CHDEL | Delemont | JU |
| CHDNS | Denens | VD |
| CHD8S | Denges | VD |
| CHDBU | Densburen | AG |
| CHDRD | Derendingen | SO |
| CHDTG | Detligen | BE |
| CHDET | Dettighofen | TG |
| CHDVR | Develier | JU |
| CHDGT | Diegten | BL |
| CHDLD | Dielsdorf | ZH |
| CHDII | Diemtigen | BE |
| CHDPS | Diepoldsau | SG |
| CHCDX | Courtedoux | JU |
| CHCTY | Courtelary | BE |
| CHCOT | Courtepin | FR |
| CHCST | Cousset | FR |
| CHCVT | Couvet | NE |
| CHCDY | Crans | |
| CHCMT | Crans Montana | VS |
| CHCPC | Crans-pres-celigny | VD |
| CHCRA | Crassier | VD |
| CHCR2 | Cremines | BE |
| CHCRS | Cressier | FR |
| CHCRR | Cressier | NE |
| CHCRI | Crissier | VD |
| CHCUD | Cudrefin | VD |
| CHCUG | Cugy | VD |
| CHCUL | Cully | VD |
| CHZCH | Dachsen | ZH |
| CHDAE | Dagmersellen | LU |
| CHDLS | Daillens | VD |
| CHDAL | Dallenwil | NW |
| CHCOP | Coppet | GE |
| CHCRY | Corbeyrier | VD |
| CHCRC | Corcelles-cormondreche | NE |
| CHCOR | Corcelles-pres-payerne | VD |
| CHCGM | Corgemont | BE |
| CHCBF | Corminboeuf | FR |