| Code | Name | Region |
|---|---|---|
| DEMA9 | Mantel | BY |
| DE7MB | Marbach | HE |
| DEMNC | Marbach Am Neckar | BW |
| DEMAR | Marburg | HE |
| DEMRM | Marcardsmoor | NI |
| DEMRC | March | BY |
| DEMGM | Margetshochheim | BY |
| DEMKN | Mariakirchen | BY |
| DEMPG | Mariaposching | BY |
| DEMRI | Marienberg | SN |
| DEMDF | Mariendorf | BE |
| DEMFD | Marienfeld | NW |
| DEMHD | Marienheide | NW |
| DEMMS | Marienmunster | NW |
| DEMLW | Malchow | MV |
| DEMAM | Malente | SH |
| DEM8B | Malgersdorf | BY |
| DEMPF | Mallersdorf-pfaffenberg | BY |
| DEMDM | Malliss | MV |
| DEMNW | Mallnow | BB |
| DEML5 | Malmsheim | BW |
| DEMLU | Malsburg | BW |
| DEMLH | Malsch | BW |
| DEMHC | Malschwitz | SN |
| DEMFL | Malsfeld | HE |
| DEMDN | Malterdingen | BW |
| DEMRP | Mammelzen | RP |
| DEMMF | Mammendorf | BY |
| DEMMI | Mamming | BY |
| DEMGB | Manching | BY |
| DEMDL | Mandelbachtal | SL |
| DEMRN | Mandern | HE |
| DEMDR | Mandern | RP |
| DEMH2 | Manhagen | SH |
| DEMHW | Mahlow | BB |
| DEMHB | Maierhofen | BY |
| DEMYK | Maikammer | RP |
| DEMSF | Mainaschaff | BY |
| DEMBM | Mainbernheim | BY |
| DEMNB | Mainburg | BY |
| DEMNT | Mainhardt | BW |
| DEMNH | Mainhausen | HE |
| DEMYN | Mainleus | BY |
| DEMN2 | Mainstockheim | BY |
| DEMTL | Maintal | HE |
| DEMAI | Mainz | RP |
| DEMZK | Mainz Kastel | HE |
| DEMZG | Mainz-gonsenheim | RP |
| DEMKM | Mainz-kostheim | HE |
| DEGYM | Mainzlar | HE |