Düzce Province is a province in northwestern Turkey. It is on the coastline of the Black Sea and is traversed by the main highway between Istanbul and Ankara. The main town is Düzce. There are ancient Greek ruins in the province.
Düzce broke off from Bolu province and became a province in its own right after a devastating earthquake in the city in November 1999.
Düzce city is the eighty-first and the newest province of Turkey. It is situated on the Black Sea between the Capital Ankara and Istanbul. It was greatly affected by both the Marmara and Düzce earthquakes of 1999.
Ankara is 240 km to the east and Istanbul is 228 km to the west. Road D-100 passes through Düzce, while the TEM highway passes around it.
Düzce is on the plateau of the West Black Sea coast. It is bordered to the west by Sakarya, to the northeast by Zonguldak, and to the east by Bolu. It opens to the Black Sea with the valley of Büyük Melen on the northwest. Düzce is 23 km across from east to west, and 20 km from north to south.