| Klimatarias Street | 13343 | Rest of Attica | Attica |
| Klontza Georgiou Street | 13342 | Rest of Attica | Attica |
| Knosou Street | 19014 | Rest of Attica | Attica |
| Knosou Street | 13461 | Rest of Attica | Attica |
| Knosou Street | 13341 | Rest of Attica | Attica |
| Knosou Street | 19006 | Rest of Attica | Attica |
| Kodrigktonos Street | 13343 | Rest of Attica | Attica |
| Kodrou Street | 13344 | Rest of Attica | Attica |
| Kodrou Street | 19500 | Rest of Attica | Attica |
| Kodrou Street | 19001 | Rest of Attica | Attica |
| Kofinakou Street | 19500 | Rest of Attica | Attica |
| Koiladas Street | 19014 | Rest of Attica | Attica |
| Koilia Vas. Street | 19200 | Rest of Attica | Attica |
| Koimiseos Theotokou Street | 19015 | Rest of Attica | Attica |
| Koimiseos Theotokou Street | 19015 | Rest of Attica | Attica |
| Koimiseos Theotokou Street | 19015 | Rest of Attica | Attica |
| Koimiseos Theotokou Street | 19015 | Rest of Attica | Attica |
| Koimiseos Theotokou Street | 13351 | Rest of Attica | Attica |
| Koimiseos Theotokou Street | 19001 | Rest of Attica | Attica |
| Kokkinioti Konstantinou Street | 19018 | Rest of Attica | Attica |
| Kokkinis Milias Street | 13342 | Rest of Attica | Attica |
| Kokorea Panagioti Street | 19500 | Rest of Attica | Attica |
| Koletti Ioanni Street | 13461 | Rest of Attica | Attica |
| Koletti Ioanni Street | 13343 | Rest of Attica | Attica |
| Koletti Street | 19006 | Rest of Attica | Attica |
| Koliakou Christou Street | 19200 | Rest of Attica | Attica |
| Koliou Nikolaou Street | 13341 | Rest of Attica | Attica |
| Kolokotroni Street | 19015 | Rest of Attica | Attica |
| Kolokotroni Street | 19015 | Rest of Attica | Attica |
| Kolokotroni Street | 19011 | Rest of Attica | Attica |
| Kolokotroni Street | 19006 | Rest of Attica | Attica |
| Kolokotroni Street | 19008 | Rest of Attica | Attica |
| Kolokotroni Street | 19012 | Rest of Attica | Attica |
| Kolokotroni Street | 19100 | Rest of Attica | Attica |
| Kolokotroni Street | 19006 | Rest of Attica | Attica |
| Kolokotroni Street | 19018 | Rest of Attica | Attica |
| Kolokotroni Street | 19600 | Rest of Attica | Attica |
| Kolokotroni Street | 19001 | Rest of Attica | Attica |
| Kolokotroni Street | 19001 | Rest of Attica | Attica |
| Kolokotroni Street | 19001 | Rest of Attica | Attica |