- Inception
- 9 December 1999
- Population
- 360388, 387844, 369674
- Area
- 3641, 2492
- Elevation
- 146 m
- annual number of weddings
- 2644, 2774, 2756, 2711, 2738, 2779, 2645, 2521, 2451, 2327, 2797, 2828
- contains the administrative territorial entity
- Akçakoca, Çilimli, Cumayeri, Düzce, Gölyaka, Gümüşova, Kaynaşlı, Yığılca, Akçakoca district, Çilimli district, Gümüşova district, Gölyaka district
- female population
- 185111
- life expectancy
- 76.68, 76.71, 76.94, 76.38, 76.15
- local dialing code
- 380
- male population
- 184563
- maximum temperature record
- 42.4
- mean age
- 31.35, 31.72, 32.00, 32.32, 32.73, 33.09, 33.20, 33.42, 33.61, 33.92, 34.37, 34.74
- minimum temperature record
- -20.5
- name in kana
- デュズジェ
- native label
- Düzce ili
- number of households
- 129283
- postal code
- 81000–81999
- suicide rate
- 2.97, 2.35, 2.32, 2.87, 3.39, 3.35, 3.56, 3.48, 3.92, 4.87, 3.30, 2.76
- total fertility rate
- 3.07, 3.04, 3.15, 3.17, 3.28, 3.19, 3.06, 2.94, 2.86, 2.63, 2.47, 2.49
- vehicle registration plate code
- 81
- water as percent of area
- 0.48