| Kastanias Street | 13343 | Rest of Attica | Attica |
| Kastanion Street | 13341 | Rest of Attica | Attica |
| Kastellas Street | 19300 | Rest of Attica | Attica |
| Kastoriadi Street | 19200 | Rest of Attica | Attica |
| Kastorias Street | 19006 | Rest of Attica | Attica |
| Kastorias Street | 13343 | Rest of Attica | Attica |
| Kastoros Street | 19015 | Rest of Attica | Attica |
| Kastoros Street | 13344 | Rest of Attica | Attica |
| Kastrioti Georgiou Street | 13461 | Rest of Attica | Attica |
| Katerinis Street | 19100 | Rest of Attica | Attica |
| Katerinis Street | 19001 | Rest of Attica | Attica |
| Katerinis Street | 13343 | Rest of Attica | Attica |
| Katifedon Street | 13343 | Rest of Attica | Attica |
| Katraki Manou Street | 13342 | Rest of Attica | Attica |
| Katsampa Street | 19500 | Rest of Attica | Attica |
| Katsantoni Antoni Street | 13461 | Rest of Attica | Attica |
| Katsarou Street | 19012 | Rest of Attica | Attica |
| Katsoni Lamprou Street | 19100 | Rest of Attica | Attica |
| Katsoni Lamprou Street | 13343 | Rest of Attica | Attica |
| Katsoni Lamprou Street | 19300 | Rest of Attica | Attica |
| Katsoni Street | 19600 | Rest of Attica | Attica |
| Kavafi Konstantinou Street | 19600 | Rest of Attica | Attica |
| Kavafi Konstantinou Street | 13461 | Rest of Attica | Attica |
| Kavafi Konstantinou Street | 13342 | Rest of Attica | Attica |
| Kavafi Konstantinou Street | 19300 | Rest of Attica | Attica |
| Kavafi Konstantinou Street | 19200 | Rest of Attica | Attica |
| Kavalas Street | 13341 | Rest of Attica | Attica |
| Kavalas Street | 13461 | Rest of Attica | Attica |
| Kavasila Nikolaou Street | 13342 | Rest of Attica | Attica |
| Kaveiron Street | 19500 | Rest of Attica | Attica |
| Kavvadia Nikou Street | 13342 | Rest of Attica | Attica |
| Kavvadia Street | 19200 | Rest of Attica | Attica |
| Kavylis Street | 13341 | Rest of Attica | Attica |
| Kazantzaki Nikou Avenue | 19300 | Rest of Attica | Attica |
| Kazantzaki Nikou Street | 19011 | Rest of Attica | Attica |
| Kazantzaki Nikou Street | 13342 | Rest of Attica | Attica |
| Kazantzaki Nikou Street | 13461 | Rest of Attica | Attica |
| Kazantzaki Nikou Street | 19200 | Rest of Attica | Attica |
| Kazantzidi Steliou Street | 19300 | Rest of Attica | Attica |
| Keas Street | 19006 | Rest of Attica | Attica |