| Code | Name | Region |
|---|---|---|
| DEKHS | Kochel Am See | BY |
| DEKHO | Kochendorf | BW |
| DEKOD | Kodersdorf | SN |
| DEKXT | Kleinwallstadt | BY |
| DEKSH | Klein-winternheim | RP |
| DEKPU | Klempau | SH |
| DE65I | Kletkamp | SH |
| DEW2Q | Klettbach | TH |
| DEKLU | Klettgau | BW |
| DEKZT | Kletzin | MV |
| DEKLE | Kleve | NW |
| DE67T | Kleve | SH |
| DEKL3 | Klieken | ST |
| DEKGB | Klingenberg | SN |
| DEKLI | Klingenberg Am Main | BY |
| DERPK | Klingenmunster | RP |
| DEKGT | Klingenthal | SN |
| DEKLK | Klink | MV |
| DE55P | Klinkrade | SH |
| DEKHA | Klipphausen | SN |
| DEKLC | Klobbicke | BB |
| DEKDN | Kloden | ST |
| DEXKL | Kloster Neuendorf | ST |
| DEKGW | Klein Gaglow | BB |
| DE62I | Klein Gladebrugge | SH |
| DE58Q | Klein Kummerfeld | SH |
| DE63A | Klein Nordende | SH |
| DEKLO | Klein Offenseth | SH |
| DE62J | Klein Ronnau | SH |
| DE45K | Klein Wanzleben | ST |
| DE57P | Klein Wesenberg | SH |
| DE54T | Klein Zecher | SH |
| DEKTG | Kleinaitingen | BY |
| DEKBF | Kleinblittersdorf | SL |
| DEKWI | Kleines Wiesental | BW |
| DEEPC | Kleinhartmannsdorf | SN |
| DEKLH | Kleinheubach | BY |
| DEKKB | Kleinkarlbach | RP |
| DEKLW | Kleinmachnow | BB |
| DEKMD | Kleinmaischeid | RP |
| DEKTM | Kleinostheim | |
| DEKDD | Kleinrinderfeld | BY |
| DEKTU | Kleintettau | BY |
| DEIRN | Kirnsulzbach | RP |
| DEKRY | Kirrweiler | RP |
| DEKIH | Kirschau | SN |
| DERFT | Kirschfurt | BY |
| DEKXF | Kirschhofen | HE |
| DEKWR | Kirschweiler | RP |
| DEKIF | Kirtorf | HE |