Karabük is located on the highway between Bartın and Ankara, which was in ancient times an important route between Amasra on the coast and central Anatolia. The railway between Ankara and Zonguldak passes through Karabük.
Safranbolu, a historically important city, which is listed in the UNESCO World Heritage List, is located in Karabük Province.
Karabük is a town and the capital district of Karabük Province in the Black Sea region of Turkey. According to the 2009 census, population of the city is 108 167. The district covers an area of 760 km2 (293 sq mi), and the town lies at an elevation of 354 m (1,161 ft).
Karabük was built in the 1930s as the seat of the iron and steel industry of Turkey. Thus it has one of the worst- if not the worst – air pollution in the country, with a hazardous Air Quality Index of 328. Karabük lies in a location near Filyos River formed by the merge of Araç and Soğanlı rivers.
Karabük Province, located about 200 km (124 mi) north of Ankara, 115 km (71 mi) away from Zonguldak and 113 km (70 mi) away from Kastamonu. In 2010 it had a population of 227,610. The main city is Karabük which is located about 100 km (62 mi) south of the Black Sea coast.
Karabük Province is one of the newest provinces of Turkey. Until 1995 it was a district of Zonguldak, when it became an il (provincial center) in its own right. Established in 1995, it comprises Karabük, Eflani, Safranbolu and Yenice districts which were formerly part of Zonguldak Province and Eskipazar and Ovacık districts which were previously part of Çankırı Province.