Kocaeli Postal/ZIP Codes, Time and Date

Districts
Başiskele, Kocaeli
Çayırova, Kocaeli
Darıca, Kocaeli
Derince, Kocaeli
Dilovası, Kocaeli
Gebze, Kocaeli
Gölcük, Kocaeli
İzmit, Kocaeli
Kandıra, Kocaeli
Karamürsel, Kocaeli
Kartepe, Kocaeli
Körfez, Kocaeli
Postal Codes in Marmara
İstanbul
Çanakkale
Yalova
Tekirdağ
Sakarya
Kırklareli
Kocaeli
Edirne
Bursa
Bilecik
Balıkesir