Religion In Istanbul
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Religion in Istanbul covers the issue of religion in the city of
Istanbul Istanbul is the List of largest cities and towns in Turkey, largest city in Turkey, constituting the country's economic, cultural, and historical heart. With Demographics of Istanbul, a population over , it is home to 18% of the Demographics ...
,
Turkey Turkey, officially the Republic of Türkiye, is a country mainly located in Anatolia in West Asia, with a relatively small part called East Thrace in Southeast Europe. It borders the Black Sea to the north; Georgia (country), Georgia, Armen ...
. More than 90% of Istanbul's population are Sunni Muslims and Alevism forms the second biggest religious group. A 2019 survey study by KONDA that examined the religiosity of the voting-age adults in Istanbul showed that 47% of the surveyed had a religion and were trying to practise its requirements. This was followed by nonobservant people with 34% who identified with a religion but generally did not practise its requirements. 11% stated they were fully devoted to their religion, meanwhile 4% were non-believers who did not believe the rules and requirements of a religion and 4% were atheists who did not believe in religion at all. 24% of the surveyed also identified themselves as " religious conservatives". According to the 2000 census, there were 2691 active
mosque A mosque ( ), also called a masjid ( ), is a place of worship for Muslims. The term usually refers to a covered building, but can be any place where Salah, Islamic prayers are performed; such as an outdoor courtyard. Originally, mosques were si ...
s, 123 active churches and 20 active
synagogue A synagogue, also called a shul or a temple, is a place of worship for Jews and Samaritans. It is a place for prayer (the main sanctuary and sometimes smaller chapels) where Jews attend religious services or special ceremonies such as wed ...
s in Istanbul; as well as 109 Muslim cemeteries and 57 non-Muslim cemeteries. Religious minorities include Greek Orthodox Christians, Armenian Christians, Catholic Levantines, Assyrian Christians, and
Sephardic Sephardic Jews, also known as Sephardi Jews or Sephardim, and rarely as Iberian Peninsular Jews, are a Jewish diaspora population associated with the historic Jewish communities of the Iberian Peninsula (Spain and Portugal) and their descendant ...
Jews Jews (, , ), or the Jewish people, are an ethnoreligious group and nation, originating from the Israelites of History of ancient Israel and Judah, ancient Israel and Judah. They also traditionally adhere to Judaism. Jewish ethnicity, rel ...
. Some neighbourhoods have been known with their sizeable populations of these ethnic groups, such as the Kumkapı neighbourhood, which had a significant
Armenian Armenian may refer to: * Something of, from, or related to Armenia, a country in the South Caucasus region of Eurasia * Armenians, the national people of Armenia, or people of Armenian descent ** Armenian diaspora, Armenian communities around the ...
population, the Balat neighbourhood, which used to have a sizeable
Jewish Jews (, , ), or the Jewish people, are an ethnoreligious group and nation, originating from the Israelites of History of ancient Israel and Judah, ancient Israel and Judah. They also traditionally adhere to Judaism. Jewish ethnicity, rel ...
population, the Fener neighbourhood with a large Greek population, and some neighbourhoods in Nişantaşı and Pera, which had sizeable Levantine populations. In some quarters, such as Ortaköy or Kuzguncuk, an Armenian church sits next to a synagogue, and on the other side of the road a Greek Orthodox church is found beside a mosque. Istanbul was the final seat of the Islamic Caliphate, from 1517 to 1924, when the Caliphate was dissolved and its powers were handed over to the Turkish Parliament. The seat of the Patriarch of Constantinople, spiritual leader of the
Eastern Orthodox Church The Eastern Orthodox Church, officially the Orthodox Catholic Church, and also called the Greek Orthodox Church or simply the Orthodox Church, is List of Christian denominations by number of members, one of the three major doctrinal and ...
since the 4th century AD, is located in the Fener ( Phanar) district. Also based in Istanbul are the archbishop of the Turkish Orthodox Church, the Armenian Patriarchate, and the Turkish Chief Rabbi ('' Hahambasi''). Istanbul was formerly also the seat of the Bulgarian Exarchate, before its autocephaly was recognized by other Orthodox churches.


Islam

The urban landscape of Istanbul is shaped by many communities. The most populous major religion is
Islam Islam is an Abrahamic religions, Abrahamic monotheistic religion based on the Quran, and the teachings of Muhammad. Adherents of Islam are called Muslims, who are estimated to number Islam by country, 2 billion worldwide and are the world ...
. The first mosque in Istanbul was built in
Kadıköy Kadıköy () is a municipality and Districts of Turkey, district on the Asian side of Istanbul Province, Istanbul Province, Turkey. Its area is 25 km2, and its population is 467,919 (2023). It is a large and populous area in the Asian si ...
(ancient Chalcedon) on the Asian side of the city, which was conquered by the Ottoman Turks in 1353, a full century before the conquest of
Constantinople Constantinople (#Names of Constantinople, see other names) was a historical city located on the Bosporus that served as the capital of the Roman Empire, Roman, Byzantine Empire, Byzantine, Latin Empire, Latin, and Ottoman Empire, Ottoman empire ...
across the
Bosphorus The Bosporus or Bosphorus Strait ( ; , colloquially ) is a natural strait and an internationally significant waterway located in Istanbul, Turkey. The Bosporus connects the Black Sea to the Sea of Marmara and forms one of the continental bo ...
, on the European side. The first mosque on the European side of Istanbul was built inside the Rumelian Castle in 1452. The first grand mosque which was built in the city proper is the
Eyüp Sultan Mosque The Eyüp Sultan Mosque () is a mosque in Eyüp district of Istanbul, Turkey. The mosque complex includes a mausoleum marking the spot where Abu Ayyub al-Ansari, Ebu Eyüp el-Ansari (Abu Ayyub al-Ansari), the standard-bearer and companion of the ...
(1458), while the first imperial mosque inside the city walls was the Fatih Mosque (1470) which was built on the site of the Church of the Holy Apostles, an important
Byzantine The Byzantine Empire, also known as the Eastern Roman Empire, was the continuation of the Roman Empire centred on Constantinople during late antiquity and the Middle Ages. Having survived the events that caused the fall of the Western Roman E ...
church which was originally edificed in the time of
Constantine the Great Constantine I (27 February 27222 May 337), also known as Constantine the Great, was a Roman emperor from AD 306 to 337 and the first Roman emperor to convert to Christianity. He played a Constantine the Great and Christianity, pivotal ro ...
. Many other imperial mosques were built in the following centuries, such as the famous
Süleymaniye Mosque The Süleymaniye Mosque (, ) is an Ottoman imperial mosque located on the Seven hills of Istanbul, Third Hill of Istanbul, Turkey. The mosque was commissioned by Suleiman the Magnificent () and designed by the imperial architect Mimar Sinan. An ...
(1557) which was ordered by
Suleiman the Magnificent Suleiman I (; , ; 6 November 14946 September 1566), commonly known as Suleiman the Magnificent in the Western world and as Suleiman the Lawgiver () in his own realm, was the List of sultans of the Ottoman Empire, Ottoman sultan between 1520 a ...
and designed by the great Ottoman architect Mimar Sinan, and the famous Sultan Ahmed Mosque (1616) which is also known as the "Blue Mosque" for the blue tiles which adorn its interior. Istanbul was the seat of the Islamic Caliphate, between 1517 and 1924. Some of the personal belongings of
Muhammad Muhammad (8 June 632 CE) was an Arab religious and political leader and the founder of Islam. Muhammad in Islam, According to Islam, he was a prophet who was divinely inspired to preach and confirm the tawhid, monotheistic teachings of A ...
and the earliest
caliph A caliphate ( ) is an institution or public office under the leadership of an Islamic steward with Khalifa, the title of caliph (; , ), a person considered a political–religious successor to the Islamic prophet Muhammad and a leader of ...
s who followed him are today preserved in the Topkapı Palace, the
Eyüp Sultan Mosque The Eyüp Sultan Mosque () is a mosque in Eyüp district of Istanbul, Turkey. The mosque complex includes a mausoleum marking the spot where Abu Ayyub al-Ansari, Ebu Eyüp el-Ansari (Abu Ayyub al-Ansari), the standard-bearer and companion of the ...
and in several other prominent mosques of Istanbul. The conquest of the Byzantine capital of
Constantinople Constantinople (#Names of Constantinople, see other names) was a historical city located on the Bosporus that served as the capital of the Roman Empire, Roman, Byzantine Empire, Byzantine, Latin Empire, Latin, and Ottoman Empire, Ottoman empire ...
in 1453 enabled the Ottomans to consolidate their empire in
Anatolia Anatolia (), also known as Asia Minor, is a peninsula in West Asia that makes up the majority of the land area of Turkey. It is the westernmost protrusion of Asia and is geographically bounded by the Mediterranean Sea to the south, the Aegean ...
and
Thrace Thrace (, ; ; ; ) is a geographical and historical region in Southeast Europe roughly corresponding to the province of Thrace in the Roman Empire. Bounded by the Balkan Mountains to the north, the Aegean Sea to the south, and the Black Se ...
. The Ottomans later revived the title of caliph during the reign of Sultan Selim. Despite the absence of a formal institutional structure,
Sunni Sunni Islam is the largest branch of Islam and the largest religious denomination in the world. It holds that Muhammad did not appoint any successor and that his closest companion Abu Bakr () rightfully succeeded him as the caliph of the Mu ...
religious functionaries played an important political role. Justice was dispensed by religious courts; in theory, the codified system of
sharia Sharia, Sharī'ah, Shari'a, or Shariah () is a body of religious law that forms a part of the Islamic tradition based on Islamic holy books, scriptures of Islam, particularly the Quran, Qur'an and hadith. In Islamic terminology ''sharīʿah'' ...
regulated all aspects of life, at least for the Muslim subjects of the empire. The head of the judiciary ranked directly below the sultan and was second in power only to the grand vizier. Early in the Ottoman period, the office of grand mufti of Istanbul evolved into that of Sheikh ul-Islam (shaykh, or leader of Islam), which had ultimate jurisdiction over all the courts in the empire and consequently exercised authority over the interpretation and application of sharia. Legal opinions pronounced by the Sheikh were considered definitive interpretations.


Christianity

Constantinople Constantinople (#Names of Constantinople, see other names) was a historical city located on the Bosporus that served as the capital of the Roman Empire, Roman, Byzantine Empire, Byzantine, Latin Empire, Latin, and Ottoman Empire, Ottoman empire ...
is generally considered to be the center and the "cradle of Orthodox Christian civilization". The city has been the
seat A seat is a place to sit. The term may encompass additional features, such as back, armrest, head restraint but may also refer to concentrations of power in a wider sense (i.e " seat (legal entity)"). See disambiguation. Types of seat The ...
of the
Ecumenical Patriarchate The Ecumenical Patriarchate of Constantinople (, ; ; , "Roman Orthodox Patriarchate, Ecumenical Patriarchate of Istanbul") is one of the fifteen to seventeen Autocephaly, autocephalous churches that together compose the Eastern Orthodox Church. ...
since the 4th century AD, and continues to serve as the seat of some other Orthodox churches, such as the Turkish Orthodox Church and the Armenian Patriarchate. The city was formerly also the seat of the Bulgarian Exarchate, before its autocephaly was recognized by other Orthodox churches. Following the Turkish conquest of Constantinople in 1453, the Ottoman Sultan
Mehmed II Mehmed II (; , ; 30 March 14323 May 1481), commonly known as Mehmed the Conqueror (; ), was twice the sultan of the Ottoman Empire from August 1444 to September 1446 and then later from February 1451 to May 1481. In Mehmed II's first reign, ...
established the Millet System, according to which the different ethnic groups within Constantinople and the rest of the Ottoman Empire were to be governed by a group of institutions based on faith. For this purpose, Mehmed II also founded previously non-existent religious authorities such as the Armenian Patriarchate of Constantinople in 1461. Earlier, the Byzantines considered the Armenian Church as heretic and did not allow the Armenians to have churches inside the walls of Constantinople. Several Armenian saints, such as Saint Narses, were exiled and imprisoned in the Princes' Islands near Constantinople, in the
Sea of Marmara The Sea of Marmara, also known as the Sea of Marmora or the Marmara Sea, is a small inland sea entirely within the borders of Turkey. It links the Black Sea and the Aegean Sea via the Bosporus and Dardanelles straits, separating Turkey's E ...
. With the Millet System, a great deal of the internal affairs regarding these communities were assigned to the administration of these religious authorities; such as the
Ecumenical Patriarchate The Ecumenical Patriarchate of Constantinople (, ; ; , "Roman Orthodox Patriarchate, Ecumenical Patriarchate of Istanbul") is one of the fifteen to seventeen Autocephaly, autocephalous churches that together compose the Eastern Orthodox Church. ...
for the affairs of all Orthodox Christians, the Armenian Patriarchate for the affairs of the Armenian (and for some time also the Syriac) Christians, and later the Chief Rabbi for the affairs of the Jews. As middleman minorities, Greeks ( Phanariots) and
Armenians in Istanbul Armenians in Istanbul (; ) are a major part of the Turkish Armenian community and historically one of the largest ethnic minorities of Istanbul, Turkey. The city is often referred to as Bolis (ÕŠÕ¸Õ¬Õ«Õ½) by Armenians, which is derived from the ...
they were overrepresented in
commerce Commerce is the organized Complex system, system of activities, functions, procedures and institutions that directly or indirectly contribute to the smooth, unhindered large-scale exchange (distribution through Financial transaction, transactiona ...
. The wealthy, Constantinople-based ''Amira'' class, a social elite whose members included the Duzians (Directors of the Imperial Mint), the Balyans (Chief Imperial Architects) and the Dadians (Superintendent of the Gunpowder Mills and manager of industrial factories). It was the wealth of the extensive Phanariots merchant class that provided the material basis for the intellectual revival that was the prominent feature of Greek life in the half century and more leading to the outbreak of the
Greek War of Independence The Greek War of Independence, also known as the Greek Revolution or the Greek Revolution of 1821, was a successful war of independence by Greek revolutionaries against the Ottoman Empire between 1821 and 1829. In 1826, the Greeks were assisted ...
in 1821. Into the 19th century, the Christians of Istanbul tended to be either
Greek Orthodox Greek Orthodox Church (, , ) is a term that can refer to any one of three classes of Christian Churches, each associated in some way with Greek Christianity, Levantine Arabic-speaking Christians or more broadly the rite used in the Eastern Rom ...
, members of the
Armenian Apostolic Church The Armenian Apostolic Church () is the Autocephaly, autocephalous national church of Armenia. Part of Oriental Orthodoxy, it is one of the most ancient Christianity, Christian churches. The Armenian Apostolic Church, like the Armenian Catholic ...
or Catholic Levantines. The everyday life of the Christians (50%), particularly the Greeks (260,000) and Armenians (160,000), living in Istanbul changed significantly following the bitter conflicts between these ethnic groups and the Turks during the Decline of the Ottoman Empire, which began in the 1820s and continued for a century. The conflicts reached their culmination in the decade between 1912 and 1922; during the
Balkan Wars The Balkan Wars were two conflicts that took place in the Balkans, Balkan states in 1912 and 1913. In the First Balkan War, the four Balkan states of Kingdom of Greece (Glücksburg), Greece, Kingdom of Serbia, Serbia, Kingdom of Montenegro, M ...
, the
First World War World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Central Powers. Fighting to ...
and the
Turkish War of Independence , strength1 = May 1919: 35,000November 1920: 86,000Turkish General Staff, ''Türk İstiklal Harbinde Batı Cephesi'', Edition II, Part 2, Ankara 1999, p. 225August 1922: 271,000Celâl Erikan, Rıdvan Akın: ''Kurtuluş Savaşı tarih ...
. The city's Greek Orthodox community was exempted from the population exchange between Greece and Turkey in 1923 following the establishment of the Turkish Republic. However, a series of special restrictions and taxes during the years of the
Second World War World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
(see, e.g., the wealth tax ''
Varlık Vergisi The Varlık Vergisi (, "wealth tax" or "capital tax") was a tax mostly levied on non-Muslim citizens under the Republican People's Party (CHP) government in Turkey in 1942, with the stated aim of raising funds for the country's defense in case of ...
''), and the Istanbul Pogrom of 1955 which caused the deaths of 15 Greeks and the injury of 32 others, greatly increased emigration from Istanbul to Greece. In 1964, all Greeks without Turkish citizenship residing in Turkey (around 12,000) were deported. Today, most of Turkey's remaining Greek and Armenian minorities live in or near Istanbul. The number of the Armenians in Istanbul today amount to approximately 40,000 or 70,000, while the Greek community amounted to slightly more than 3,000 at the beginning of the 21st century. As of 2019, an estimated 18,000 of the country's 25,000 Assyrians live in
Istanbul Istanbul is the List of largest cities and towns in Turkey, largest city in Turkey, constituting the country's economic, cultural, and historical heart. With Demographics of Istanbul, a population over , it is home to 18% of the Demographics ...
. Beside the mostly Catholic Levantines, who are the descendants of European ( Genoese, Venetian and French) traders who established trading outposts during the Byzantine and Ottoman periods, there is also a small, scattered number of Bosphorus Germans. A number of places reflect past movements of different communities into Istanbul, most notably Arnavutköy (Albanian village), Polonezköy (Polish village) and Yenibosna (New Bosnia). There were more than 40,000 Catholic Italians in Istanbul at the turn of the 20th century, a figure which not only included the descendants of the local Genoese and Venetian merchants who lived there since the Byzantine and early Ottoman periods, but also the numerous Italian workers and artisans who came to the city from Italy during the 19th century.
Giuseppe Garibaldi Giuseppe Maria Garibaldi ( , ;In his native Ligurian language, he is known as (). In his particular Niçard dialect of Ligurian, he was known as () or (). 4 July 1807 – 2 June 1882) was an Italian general, revolutionary and republican. H ...
and
Giuseppe Mazzini Giuseppe Mazzini (, ; ; 22 June 1805 – 10 March 1872) was an Italian politician, journalist, and activist for the unification of Italy (Risorgimento) and spearhead of the Italian revolutionary movement. His efforts helped bring about the ...
came to Constantinople in 1832, and again in 1833. Garibaldi lived in Beyoğlu and taught Italian, French and Mathematics in the foreign schools of this district. Garibaldi also established the ''Società Operaia Italiana di Mutuo Soccorso'' on May 17, 1863, in Beyoğlu, and became its first President ( Mazzini was the second President). The ''Società Operaia Italiana di Mutuo Soccorso'' is still active and is located in its original site, on a side street of İstiklal Avenue. The number of Istanbul's Italians decreased after the end of the Ottoman Empire for several reasons. The Turkish Republic no longer recognized the trade privileges that were given to the descendants of the Genoese and Venetian merchants, and foreigners were no longer allowed to work in Turkey in a wide number of sectors, including many artisanships, in which numerous Istanbulite Italians used to work. The ''
Varlık Vergisi The Varlık Vergisi (, "wealth tax" or "capital tax") was a tax mostly levied on non-Muslim citizens under the Republican People's Party (CHP) government in Turkey in 1942, with the stated aim of raising funds for the country's defense in case of ...
'' (Wealth Tax) of the
World War II World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
years, which imposed higher tariffs on non-Muslims and foreigners in Turkey, also played an important role in the migration of Istanbul's Italians to Italy—who still live in the city, but in far fewer numbers when compared with the early 20th century. The influence of the Italian community of Istanbul, however, is still visible in the architecture of many quarters, particularly
Galata Galata is the former name of the Karaköy neighbourhood in Istanbul, which is located at the northern shore of the Golden Horn. The district is connected to the historic Fatih district by several bridges that cross the Golden Horn, most nota ...
, Beyoğlu and Nişantaşı. The Mor Ephrem Syriac Orthodox church, opened on 8 October 2023, is the first church built since the foundation of the Republic of Turkey.


Judaism

The
Sephardic Sephardic Jews, also known as Sephardi Jews or Sephardim, and rarely as Iberian Peninsular Jews, are a Jewish diaspora population associated with the historic Jewish communities of the Iberian Peninsula (Spain and Portugal) and their descendant ...
Jews Jews (, , ), or the Jewish people, are an ethnoreligious group and nation, originating from the Israelites of History of ancient Israel and Judah, ancient Israel and Judah. They also traditionally adhere to Judaism. Jewish ethnicity, rel ...
have lived in the city for over 500 years, see the history of the Jews in Turkey. The Sephardic Jews contributed much to the rising power of the
Ottoman Empire The Ottoman Empire (), also called the Turkish Empire, was an empire, imperial realm that controlled much of Southeast Europe, West Asia, and North Africa from the 14th to early 20th centuries; it also controlled parts of southeastern Centr ...
by introducing new ideas, methods and craftsmanship. The first Gutenberg press in Istanbul was established by the Sephardic Jews in 1493, who excelled in many areas, particularly
medicine Medicine is the science and Praxis (process), practice of caring for patients, managing the Medical diagnosis, diagnosis, prognosis, Preventive medicine, prevention, therapy, treatment, Palliative care, palliation of their injury or disease, ...
,
trade Trade involves the transfer of goods and services from one person or entity to another, often in exchange for money. Economists refer to a system or network that allows trade as a market. Traders generally negotiate through a medium of cr ...
and
banking A bank is a financial institution that accepts Deposit account, deposits from the public and creates a demand deposit while simultaneously making loans. Lending activities can be directly performed by the bank or indirectly through capital m ...
. The Camondo family was highly influential in the Ottoman banking sector. The famous ''Camondo Stairs'' on the ''Bankalar Caddesi'' (''Banks Street'') in Karaköy (
Galata Galata is the former name of the Karaköy neighbourhood in Istanbul, which is located at the northern shore of the Golden Horn. The district is connected to the historic Fatih district by several bridges that cross the Golden Horn, most nota ...
) was built by them. More than 20,000 Sephardic Jews still remain in Istanbul today. Romaniotes and
Ashkenazi Jews Ashkenazi Jews ( ; also known as Ashkenazic Jews or Ashkenazim) form a distinct subgroup of the Jewish diaspora, that emerged in the Holy Roman Empire around the end of the first millennium CE. They traditionally speak Yiddish, a language ...
resided in Istanbul even before the Sephardim, but their proportion has since dwindled; today, just of Istanbul's Jews are Ashkenazi. The ''Avusturya Sinagogu'' (''Austrian Synagogue''), also known as the ''AÅŸkenaz Sinagogu'' ( Ashkenazi Synagogue) is one of the most famous synagogues in Istanbul and stands out with its interesting architecture. A wave of Ashkenazi Jews came to Istanbul during the 1930s and 1940s following the rise of
Nazism Nazism (), formally named National Socialism (NS; , ), is the far-right totalitarian socio-political ideology and practices associated with Adolf Hitler and the Nazi Party (NSDAP) in Germany. During Hitler's rise to power, it was fre ...
in
Germany Germany, officially the Federal Republic of Germany, is a country in Central Europe. It lies between the Baltic Sea and the North Sea to the north and the Alps to the south. Its sixteen States of Germany, constituent states have a total popu ...
which persecuted the Ashkenazi Jews of central and eastern Europe. Today, a total of 20 active synagogues are to be found in the city, the most important of them being the Neve Shalom Synagogue inaugurated in 1951, in the BeyoÄŸlu quarter. The Turkish Grand Rabbi in Istanbul (currently Ishak Haleva) presides over community affairs. A decrease in the population of the city's Jewish community occurred after the independence of the
State of Israel Israel, officially the State of Israel, is a country in West Asia. It Borders of Israel, shares borders with Lebanon to the north, Syria to the north-east, Jordan to the east, Egypt to the south-west, and the Mediterranean Sea to the west. Isr ...
in 1948, but the Turkish Jews who migrated to that country helped to establish strong relationships between Turkey and Israel. The founders of the State of Israel and prominent Israeli politicians such as
David Ben-Gurion David Ben-Gurion ( ; ; born David Grün; 16 October 1886 – 1 December 1973) was the primary List of national founders, national founder and first Prime Minister of Israel, prime minister of the State of Israel. As head of the Jewish Agency ...
, Yitzhak Ben-Zvi and Moshe Shertok had all studied in the leading Turkish schools of Istanbul in their youth, namely Galatasaray High School and Istanbul University. As of 2022, the Jewish population in Turkey is around 14,500, with the majority of them living in either Istanbul or İzmir.


References and notes

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Istanbul Istanbul is the List of largest cities and towns in Turkey, largest city in Turkey, constituting the country's economic, cultural, and historical heart. With Demographics of Istanbul, a population over , it is home to 18% of the Demographics ...