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Kocaeli Province

Kocaeli Province
Selim Sırrı Paşa Mansion in İzmit
Selim Sırrı Paşa Mansion in İzmit
Location of the province within Turkey
Location of the province within Turkey
 • MayorTahir Büyükakın (AKP)
 • ValiSeddar Yavuz
3,397 km2 (1,312 sq mi)
 • Density610/km2 (1,600/sq mi)
Time zoneUTC+3 (TRT)
Area code0262
İzmit is the capital of the province of Kocaeli

Kocaeli Province (Turkish: Kocaeli ili, pronounced [koˈdʒaeli]) is a province and metropolitan municipality of Turkey and one of only three not to have the same official name as its capital, İzmit, which is thus also sometimes called Kocaeli. Its area is 3,397 km2,[2] and its population is 2,079,072 (2022).[1] The province is the successor of the Ottoman-era Sanjak of Kocaeli. The largest towns in the province are İzmit and Gebze. The traffic code is 41. The province is located at the easternmost end of the Sea of Marmara around the Gulf of İzmit. Kocaeli is bordered by the province of Istanbul and the Marmara Sea to the west, the Black Sea to the north, the province of Sakarya to the east, the province of Bursa to the south and the province of Yalova to the southwest. The metropolitan area of Istanbul extends to the Kocaeli-Istanbul provincial border. The size and natural conditions of the Bay of İzmit allow for extensive port facilities, including the Gölcük Naval Base. The province is called the industrial capital of Turkey. Kocaeli has an airport named Cengiz Topel Naval Air Station which is used for military and civilian transport. Kocaeli has two universities: Kocaeli University and Gebze Technical University.


Data taken from Kocaeli Metropolitan Municipality[3] and Central Dissemination System.[4] The information is for (xxxx-12-31).

District 2009 2010 2011 2012 2013 2014 2015
Kocaeli 1,522,408 1,560,138 1,601,720 1,634,691 1,676,202 1,722,795 1,780,055
İzmit 313,964 315,734 322,588 327,435 332,754 338,710 347,074
Gebze 297,029 305,557 314,122 319,307 329,195 338,412 350,115
Derince 123,136 124,452 126,675 128,810 130,657 133,739 136,742
Darıca 140,302 146,896 152,542 157,304 164,385 173,139 182,710
Körfez 130,730 132,779 135,692 139,220 142,884 146,210 151,149
Gölcük 136,035 137,637 141,926 143,867 145,805 149,238 152,607
Çayırova 82,494 88,523 93,640 98,367 103,536 109,698 117,230
Karamürsel 50,886 51,987 52,501 52,621 53,033 54,225 55,169
Dilovası 44,258 44,958 45,060 44,981 45,610 45,714 46,099
Kandıra 46,984 49,769 49,554 50,042 50,046 49,203 48,937
Başiskele 66,183 68,037 70,835 73,327 76,605 79,625 84,235
Kartepe 90,407 93,809 96,585 99,410 101,692 104,882 107,988


Districts of Kocaeli

Kocaeli province is divided into 12 districts:[5]

Kocaeli Metropolitan Municipality Mayors

Twin cities

See also


  1. ^ a b "Address-based population registration system (ADNKS) results dated 31 December 2022, Favorite Reports" (XLS). TÜİK. Retrieved 19 September 2023.
  2. ^ "İl ve İlçe Yüz ölçümleri". General Directorate of Mapping. Retrieved 19 September 2023.
  3. ^ "Population of Districts by Year and Dependency Ratio". Kocaeli Metropolitan Municipality. Retrieved 2015-07-29.
  4. ^ "Central Dissemination System". Turkish Statistical Institute. Retrieved 2016-02-13.
  5. ^ Büyükşehir İlçe Belediyesi, Turkey Civil Administration Departments Inventory. Retrieved 19 September 2023.

Media related to Kocaeli Province at Wikimedia Commons

40°51′07″N 29°52′41″E / 40.852°N 29.878°E / 40.852; 29.878

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Kocaeli Province
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