| Code | Name | Region |
|---|---|---|
| DEKGR | Konigsdorf | BY |
| DEKUN | Konigsee | TH |
| DEKGG | Konigseggwald | BW |
| DE77V | Konigsfeld Im Schwarzwald | BW |
| DEKHE | Konigsheim | BW |
| DE73T | Konigslutter Am Elm | NI |
| DEKGM | Konigsmoor | NI |
| DEKGO | Konigsmoos | BY |
| DEK5N | Konigstein | SN |
| DEKOS | Konigstein | HE |
| DEKNW | Konigswald | SN |
| DEKGL | Konigswalde | SN |
| DEKWA | Konigswartha | SN |
| DEKDZ | Koditz | BY |
| DEKFG | Kofering | BY |
| DEKHL | Kohlberg | BW |
| DEHZK | Kohlscheid | NW |
| DE66U | Kohn | SH |
| DEKHI | Kohren-sahlis | |
| DEKOM | Kolbermoor | BY |
| DE77X | Kolbingen | BW |
| DE83Q | Kolbingen | RP |
| DEKOF | Kolenfeld | NI |
| DEKZM | Kolitzheim | BY |
| DELWZ | Kolkwitz | BB |
| DEKLD | Kolleda | TH |
| DEKOG | Kollig | RP |
| DEKOL | Kollmar | SH |
| DEKNR | Kolln-reisiek | SH |
| DE56Q | Kollow | SH |
| DECGN | Koln | NW |
| DEK2Z | Konderitz | ST |
| DEKNN | Kongen | BW |
| DEKCF | Klosterlechfeld | BY |
| DEK8D | Klostermansfeld | ST |
| DE82U | Klotten | RP |
| DEKTE | Klotze | ST |
| DEKLX | Klusserath | RP |
| DEKNA | Knapsack | NW |
| DEKNF | Knautnaundorf | SN |
| DEZKK | Knesebeck | NI |
| DEZKU | Knetzgau | BY |
| DE78D | Knittlingen | BW |
| DEKD9 | Knorrendorf | MV |
| DEZKD | Knuellwald | HE |
| DEKWD | Knull | NI |
| DEKUO | Knullwald | HE |
| DE55Q | Koberg | SH |
| DEKGF | Kobern-gondorf | RP |
| DEKOB | Koblenz Am Rhein | RP |