Kozlu is a ilçe (district) in the central part of Zonguldak Province, Turkey. It is situated at the coast of Black Sea. At 41°26′N31°45′E / 41.433°N 31.750°E / 41.433; 31.750 it is west of Zonguldak. But it is almost merged to Zonguldak. The population of Kozlu is 34739.  as of 2010. It is a relatively a new town founded after coal mines around Zonguldak were discovered. In 1926 the coal company of Kozlu was founded and Kozlu flourished . In 1936 together with the other mines around Kozlu company was bought by the government. At the present Kozlu is a typical mining town.