| Code | Name | Region |
|---|---|---|
| DEML2 | Mertloch | RP |
| DEMXH | Merxheim | RP |
| DEMZB | Merzalben | RP |
| DEMJN | Merzen | NI |
| DEMC3 | Melchingen | BW |
| DEMEL | Meldorf | SH |
| DEMEE | Melle | NI |
| DEMZE | Mellensee | BB |
| DEM5N | Mellenthin | MV |
| DEMNG | Mellingen | TH |
| DEMST | Mellrichstadt | BY |
| DEMS8 | Melsbach | RP |
| DEMLF | Melsdorf | SH |
| DEMLS | Melsungen | HE |
| DEMMJ | Memmelsdorf | BY |
| DEMEM | Memmert | NI |
| DEMMN | Memmingen | BY |
| DEMQB | Memmingerberg | BY |
| DEMEN | Menden/sauerland | NW |
| DEMND | Mendig | RP |
| DEMGE | Mengen | BW |
| DEMHN | Mengersgereuth-hammern | TH |
| DEMKI | Mengerskirchen | HE |
| DEGJ9 | Mengkofen | BY |
| DEMKO | Mehring (altotting) | BY |
| DEZBS | Mehrstetten | BW |
| DEMRU | Mehrum | NI |
| DEMDI | Meiderich | NW |
| DEMSQ | Meila | SN |
| DEMEZ | Meilschnitz | BY |
| DE73K | Meine | NI |
| DEMIR | Meinersen | NI |
| DEMZN | Meinerzhagen | NW |
| DEME8 | Meineweh | ST |
| DEMDH | Meinhard | HE |
| DEMHI | Meinheim | BY |
| DEMNI | Meiningen | TH |
| DEMIM | Meisenheim | RP |
| DEMEI | Meissen | SN |
| DE5ME | Meissenheim | BW |
| DEMTS | Meiste | NW |
| DEMII | Meitingen | BY |
| DEMZF | Meitzendorf | ST |
| DEMLC | Melbeck | NI |
| DEMC6 | Mechelgrun | SN |
| DEMCE | Mechern | SL |
| DEMCI | Mechernich | NW |
| DE54V | Mechow | SH |
| DEMCR | Mechtersen | NI |
| DE75V | Meckelfeld | NI |