|• Municipality mayor||Ali Yıldırım Sezer (AKP)|
|• District governor||Cengiz Karabulut|
|• District||206.67 km2 (79.80 sq mi)|
|• District density||700/km2 (1,800/sq mi)|
It is the district, where the 1999 earthquake disaster happened. Gölcük is the location of one of the Turkish Navy's main naval bases. Also, Ford Otosan automobile plant is located in Gölcük. The mayor is Ali Yıldırım Sezer (AKP).
- "Area of regions (including lakes), km²". Regional Statistics Database. Turkish Statistical Institute. 2002. Retrieved 2013-03-05.
- "Population of province/district centers and towns/villages by districts - 2012". Address Based Population Registration System (ABPRS) Database. Turkish Statistical Institute. Retrieved 2013-02-27.
- District governor's official website (in Turkish)
- District municipality's official website (in Turkish)
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