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,
Strait of Tartary empires. Since the Manchus' rise to prominence in 1644, the name "Tartars" became applied to them as well, and Manchuria (and Mongolia) became known to the Europeans as the "Chinese Tartary". Accordingly, when La Pérouse charted most of the strait between Sakhalin and the mainland "Chinese Tartary" in 1787, the body of water received the name of the Strait (or Channel, or Gulf) of Tartary. In Japan, the strait is named after Mamiya Rinzō, who traveled to the strait in 1808 whereof the name was introduced by Philipp Franz von Siebold in his book "Nippon: Archiv zur Beschreibung von Japan"