Postcode areas 99XXX
- Postcode area 99084 Erfurt
- Postcode area 99085 Erfurt
- Postcode area 99086 Erfurt
- Postcode area 99087 Erfurt
- Postcode area 99089 Erfurt
- Postcode area 99090 Erfurt
- Postcode area 99091 Erfurt
- Postcode area 99092 Erfurt
- Postcode area 99094 Erfurt
- Postcode area 99095 Erfurt
- Postcode area 99096 Erfurt
- Postcode area 99097 Erfurt
- Postcode area 99098 Erfurt
- Postcode area 99099 Erfurt
- Postcode area 99100 Großfahner, Dachwig u.a.
- Postcode area 99102 Rockhausen, Klettbach
- Postcode area 99189 Gebesee
- Postcode area 99192 Nesse-Apfelstädt, Nottleben
- Postcode area 99195 Großrudestedt, Schloßvippach u.a.
- Postcode area 99198 Udestedt, Mönchenholzhausen u.a.
- Postcode area 99310 Arnstadt
- Postcode area 99326 Stadtilm, Ilmtal
- Postcode area 99330 Gräfenroda
- Postcode area 99334 Elleben, Wachsenburg
- Postcode area 99338 Arnstadt
- Postcode area 99423 Weimar
- Postcode area 99425 Weimar
- Postcode area 99427 Weimar
- Postcode area 99428 Weimar
- Postcode area 99438 Bad Berka u.a.
- Postcode area 99439 Berlstedt
- Postcode area 99441 Lehnstedt u.a.
- Postcode area 99444 Blankenhain
- Postcode area 99448 Kranichfeld u.a.
- Postcode area 99510 Apolda
- Postcode area 99518 Bad Sulza
- Postcode area 99610 Sömmerda
- Postcode area 99625 Kölleda
- Postcode area 99628 Buttstädt
- Postcode area 99631 Weißensee
- Postcode area 99634 Straußfurt
- Postcode area 99636 Rastenberg
- Postcode area 99638 Kindelbrück
- Postcode area 99706 Sondershausen
- Postcode area 99707 Kyffhäuserland
- Postcode area 99713 Ebeleben
- Postcode area 99718 Greußen Clingen Großenehrich
- Postcode area 99734 Nordhausen
- Postcode area 99735 Werther Hohenstein Wolkramshausen
- Postcode area 99752 Bleicherode
- Postcode area 99755 Ellrich
- Postcode area 99759 Sollstedt
- Postcode area 99762 Neustadt/Harz u.a.
- Postcode area 99765 Heringen/ Helme
- Postcode area 99768 Harztor
- Postcode area 99817 Eisenach
- Postcode area 99819 Marksuhl, Krauthausen u.a.
- Postcode area 99820 Hörselberg-Hainich
- Postcode area 99826 Mihla
- Postcode area 99830 Treffurt
- Postcode area 99831 Creuzburg, Ifta
- Postcode area 99834 Gerstungen
- Postcode area 99837 Berka/ Werra
- Postcode area 99842 Ruhla
- Postcode area 99846 Seebach
- Postcode area 99848 Wutha-Farnroda
- Postcode area 99867 Gotha
- Postcode area 99869 Drei Gleichen
- Postcode area 99880 Waltershausen
- Postcode area 99885 Luisenthal, Ohrdruf, Wolfis
- Postcode area 99887 Georgenthal/ Thür. Wald
- Postcode area 99891 Tabarz/ Thür. Wald
- Postcode area 99894 Leinatal
- Postcode area 99897 Tambach-Dietharz/ Thür.
- Postcode area 99947 Bad Langensalza
- Postcode area 99955 Bad Tennstedt
- Postcode area 99958 Großvargula, Tonna
- Postcode area 99974 Mühlhausen, Unstruttal
- Postcode area 99976 Rodeberg, Dünwald u.a.
- Postcode area 99986 Vogtei, Kammerforst u.a.
- Postcode area 99988 Südeichsfeld
- Postcode area 99991 Großengottern, Heroldishausen
- Postcode area 99994 Schlotheim
- Postcode area 99996 Menteroda, Obermehler
- Postcode area 99998 Körner, Weinbergen