Kocaeli

Metropolitan Province
  • 2,102,907 inhabitants (2023)
  • 3,612.0 km² area

Hierarchy

Child units

13
Gebze City
768,467
Gebze District
407,436
İzmit District
378,656
Darıca District
227,892
Körfez District
180,131
Gölcük District
177,441
Çayırova District
153,301
Derince District
146,409
Kartepe District
142,175
Başiskele District
121,278
Karamürsel District
59,952
Dilovası District
54,391
Kandıra District
53,845