Gölcük Postal Codes, Kocaeli, Marmara Turkey

Find all official postal codes and zip codes for Gölcük, located in Marmara, Kocaeli, Turkey. The table below lists the specific postal codes for various places, towns, and neighborhoods within Gölcük to ensure your mail and packages are correctly routed.

Towns in Gölcük

Gölcük on the Map

The map above highlights the geographic boundaries of the Gölcük districts in Turkey. The postal codes listed on this page correspond to specific towns, villages, and post offices within this area.

What to Know About Gölcük

Key Facts

Gölcük is a district located in the Kocaeli Province of Turkey's Marmara Region. Situated on the eastern coast of the Gulf of İzmit, Gölcük occupies a strategic position along the Sea of Marmara, approximately 48 kilometers southeast of Istanbul. The district covers an area of about 217 square kilometers and has a population of around 162,000 people according to recent estimates. Gölcük is administratively divided into 50 neighborhoods (mahalle), reflecting its urban character and dense settlement pattern. Historically significant as a naval base since the Ottoman era, Gölcük is home to the Gölcük Naval Shipyard, one of Turkey's most important military installations. The district's economy is diversified, with industries including shipbuilding, manufacturing, and logistics, complemented by agricultural activities in its rural outskirts. Gölcük also features natural attractions such as its namesake lake (Gölcük Lake) and proximity to the Kartepe mountain range. For detailed postal code information and service access across its neighborhoods, comprehensive local data is available through regional administrative resources.

Neighboring Regions

* Körfez

* İzmit

* Kartepe

* Karşıyaka (Yalova Province)