Kocaeli (Prowins)
Det Kocaeli Prowins (üüb Türkisk: Kocaeli ili) as en prowins, wat uun det Marmara Regiuun faan a Türkei leit. Det hee 1.953.035 lidj (2019). At hoodsteed faan't prowins as İzmit.

Geografii

Steeden
Dön tjiin gratst steeden uun't prowins san:

Kwelen

Prowins uun a Türkei
Marmara Regiuun