City · Türkiye
Gölcük
Gölcük is a municipality and district of Kocaeli Province, Turkey. Its area is 217 km2, and its population is 175,940 (2022). Gölcük is located on the southern shore of the Gulf of İzmit, which is the easternmost inlet of the Sea of Marmara.
Good to know
- Population: 56,189.
- Area: 207 sq km.
- Timezone: Europe/Istanbul.