Kocaeli Province

Kocaeli Province
Kocaeli ili
Province of Turkey

Location of Kocaeli Province in Turkey
Country Turkey
Region East Marmara
Subregion Kocaeli
  Electoral district Kocaeli
  Total 3,626 km2 (1,400 sq mi)
Population (2010-12-31)[1]
  Total 1,560,138
  Density 430/km2 (1,100/sq mi)
Area code(s) 00262
Vehicle registration 41

Kocaeli Province (Turkish: Kocaeli ili, pronounced [kodʒaˈeli]) is a province of Turkey and one of only two to not have the same official name as its capital. This is İzmit, which is thus also sometimes called Kocaeli. 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 Marmara Sea 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[2] and Central Dissemination System.[3] The information is for (xxxx-12-31).

District 2009 2010 2011 2012 2013 2014 2015
Kocaeli 1,522,4081,560,1381,601,7201,634,6911,676,2021,722,7951,780,055
İzmit 313,964315,734322,588327,435332,754338,710347,074
Gebze 297,029305,557314,122319,307329,195338,412350,115
Derince 123,136124,452126,675128,810130,657133,739136,742
Darıca 140,302146,896152,542157,304164,385173,139182,710
Körfez 130,730132,779135,692139,220142,884146,210151,149
Gölcük 136,035137,637141,926143,867145,805149,238152,607
Çayırova 82,49488,52393,64098,367103,536109,698117,230
Karamürsel 50,88651,98752,50152,62153,03354,22555,169
Dilovası 44,25844,95845,06044,98145,61045,71446,099
Kandıra 46,98449,76949,55450,04250,04649,20348,937
Başiskele 66,18368,03770,83573,32776,60579,62584,235
Kartepe 90,40793,80996,58599,410101,692104,882107,988


Districts of Kocaeli

Kocaeli province is divided into 12 districts with the capital district of İzmit (in bold):

See also


  1. Turkish Statistical Institute, MS Excel document – Population of province/district centers and towns/villages and population growth rate by provinces
  2. "Population of Districts by Year and Dependency Ratio". Kocaeli Metropolitan Municipality. Retrieved 2015-07-29.
  3. "Central Dissemination System". Turkish Statistical Institute. Retrieved 2016-02-13.

Media related to Kocaeli Province at Wikimedia Commons

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

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