Istanbul Province Istanbul Province Istanbul Province (), also the Istanbul Metropolitan Municipality ("İstanbul Büyükşehir Belediyesi") is a province of Turkey. It has an area of and is located in the Marmara region in the north-west of the country, bordered by Tekirdağ Province to the west and Kocaeli Province to the east. The Bosphorus Strait between the Black Sea to the north and the Sea of Marmara to the south divides Istanbul Province into European and Asian sides, which makes it one of only two transcontinental provinces in Turkey, along with Çanakkale Province. Istanbul Province has a population of 14,804,116 as of 2016,
Names of Istanbul "Constantinople" instead of "Istanbul" were no longer delivered by Turkey's PTT, which contributed to the eventual worldwide adoption of the new name. In English the name is usually written "Istanbul". In modern Turkish the name is written "İstanbul" (dotted i/İ and dotless ı/I being two distinct letters in the Turkish alphabet). "Stamboul" or "Stambul" is a variant form of "İstanbul." Greek for 'the town'. Like "Istanbul" itself, forms without the initial "i-" are attested from early on in the Middle Ages, first in Arabic sources of the 10th century and Armenian ones of the 12th. Some early sources also attest