| Kilkis Street | 84100 | Syros | Cyclades |
| Kimolou Street | 84100 | Syros | Cyclades |
| Kleisthenous Street | 84100 | Syros | Cyclades |
| Knosou Street | 84100 | Syros | Cyclades |
| Kolokotroni Theodorou Street | 84100 | Syros | Cyclades |
| Kolokotroni Theodorou Street | 84100 | Syros | Cyclades |
| Kondylaki Ioanni Street | 84100 | Syros | Cyclades |
| Konstantinoupoleos Street | 84100 | Syros | Cyclades |
| Kontiza S. Street | 84100 | Syros | Cyclades |
| Kontouli D. Street | 84100 | Syros | Cyclades |
| Korai Street | 84100 | Syros | Cyclades |
| Kotopouli Street | 84100 | Syros | Cyclades |
| Kotsolaki Street | 84100 | Syros | Cyclades |
| Kotsovilli N. Street | 84100 | Syros | Cyclades |
| Koukoula Leonta Street | 84100 | Syros | Cyclades |
| Koukoule Faidona Street | 84100 | Syros | Cyclades |
| Koumpari Street | 84100 | Syros | Cyclades |
| Kountouri L. Street | 84100 | Syros | Cyclades |
| Kountouriotou Street | 84100 | Syros | Cyclades |
| Kouri Mar. Street | 84100 | Syros | Cyclades |
| Koutsodonti Annas Square | 84100 | Syros | Cyclades |
| Kritis Street | 84100 | Syros | Cyclades |
| Kyprion Agoniston Avenue | 84100 | Syros | Cyclades |
| Kyriaki Vasileiou Street | 84100 | Syros | Cyclades |
| Kythnou Street | 84100 | Syros | Cyclades |
| Ladopoulou Street | 84100 | Syros | Cyclades |
| Lampeti Ellis Street | 84100 | Syros | Cyclades |
| Lampraki Grigoriou Street | 84100 | Syros | Cyclades |
| Lavrentiou I. Street | 84100 | Syros | Cyclades |
| Leonida Street | 84100 | Syros | Cyclades |
| Leotsakou Street | 84100 | Syros | Cyclades |
| Lesvou Street | 84100 | Syros | Cyclades |
| Leventopoulou A. Street | 84100 | Syros | Cyclades |
| Lordou Vyrona Street | 84100 | Syros | Cyclades |
| Lykoudi Emmanouil Street | 84100 | Syros | Cyclades |
| Lykourgou Street | 84100 | Syros | Cyclades |
| Lysiou Street | 84100 | Syros | Cyclades |
| Lytra Nikiforou Street | 84100 | Syros | Cyclades |
| Makedonias Street | 84100 | Syros | Cyclades |
| Mandilara Nikiforou Street | 84100 | Syros | Cyclades |