Karabük Province (Turkish: Karabük ili) is a landlocked province in the northern part of Anatolia (northern central Turkey), located about 200 km (124 mi) north of Ankara, 115 km (71 mi) away from Zonguldak and 113 km (70 mi) away from Kastamonu. Its area is 4,142 km, and its population is 252,058 (2022). The main city is Karabük which is located about 100 km (62 mi) south of the Black Sea coast.
Zonguldak Province (Turkish: Zonguldak ili) is a province along the western Black Sea coast region of Turkey. Its area is 3,342 km, and its population is 588,510 (2022). Its adjacent provinces are Düzce to the southwest, Bolu to the south, Karabük to the southeast, and Bartın to the east. The capital is Zonguldak. Its Governor is Osman Hacıbektaşoğlu.
Bartın River (Bartın Çayı), anciently known as Parthenius or Parthenios (Ancient Greek: Παρθένιος), is a small river in the east of the Black Sea Region of Turkey. Its source is in the Ilgaz Mountains, in Kastamonu Province and Karabük Province. The river flows to the north, passes through Bartın, and empties into the Black Sea near Boğaz village in a delta.
The last 14 kilometres (9 mi) on the Bartın River, between Bartın and the Black Sea coast, are navigable for vessels.
Kastamonu Province (Turkish: Kastamonu ili) is a province of Turkey, in the Black Sea region in the north of the country. It is surrounded by Sinop to the east, Bartın, Karabük to the west, Çankırı to the south, Çorum to the southeast and the Black Sea to the north. Its area is 13,064 km, and its population is 378,115 (2022). The population density is 29 inhabitants per km. The provincial capital Kastamonu has a population of 128,707 (2022).
Karabük is a city in the Black Sea region of Turkey. It is the seat of Karabük Province and Karabük District. Its population is 125,403 (2022). The town lies at an elevation of 301 m (988 ft).
Karabük was built in the 1930s as the seat of the iron and steel industry of Turkey, and thus is prone to the hazardous effects of air pollution. Karabük lies in a location near Filyos River formed by the merge of Araç and Soğanlı rivers.