Map of Golcuk Turkey and Greece

Gölcük, formerly known as Diolkides, is a municipality and district of Kocaeli Province, Turkey. Its area is 217 km², and its population is 17…
Gölcük, formerly known as Diolkides, is a municipality and district of Kocaeli Province, Turkey. Its area is 217 km², and its population is 175,940. The city is located at the northern gulf of Armutlu Peninsula on the coast of Gulf of İzmit, a branch of the Sea of Marmara, in the south of the province.
  • Country: Turkey
  • Province: Kocaeli
  • Area: 217 km² (84 sq mi)
  • Area code: 0262
  • Population (2022): 175,940
  • Time zone: UTC+3 (TRT)

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Data from: en.wikipedia.org