Armenian genocide survivors in the context of Franco-Turkish War

Yerevan (UK: /ˌjɛrəˈvæn/ YERR-ə-VAN, US: /-ˈvɑːn/, -⁠VAHN; Armenian: Երևան [jɛɾɛˈvɑn] ; sometimes spelled Erevan) is the capital and largest city of Armenia, as well as one of the world's oldest continuously inhabited cities. Situated along the Hrazdan River, Yerevan is the administrative, cultural, and industrial centre of the country, as its primate city. It has been the capital since 1918, the fourteenth in the history of Armenia and the seventh located in or around the Ararat Plain. The city also serves as the seat of the Araratian Pontifical Diocese, which is the largest diocese of the Armenian Apostolic Church and one of the oldest dioceses in the world.

The history of Yerevan dates back to the 8th century BC, with the founding of the fortress of Erebuni in 782 BC by King Argishti I of Urartu at the western extreme of the Ararat Plain. Erebuni was "designed as a great administrative and religious centre, a fully royal capital." By the late ancient Armenian Kingdom, new capital cities were established and Yerevan declined in importance. The city was mostly depopulated by the Great Surgun of 1603–05, when the Safavid Empire forcibly deported hundreds of thousands of Armenians to Iran. In 1679, the city was mostly destroyed by an earthquake, and then rebuilt on a smaller scale. In 1828, Yerevan became part of the Russian Empire, which led to the repatriation of Armenians whose ancestors had been forcibly relocated in the 17th century. After World War I, Yerevan became the capital of the First Republic of Armenia as thousands of survivors of the Armenian genocide in the Ottoman Empire arrived in the area. The city expanded rapidly during the 20th century while Armenia was a part of the Soviet Union. In a few decades, Yerevan was transformed from a provincial town within the Russian Empire to Armenia's principal cultural, artistic, and industrial centre, as well as becoming the seat of national government.

The phenomenon of large-scale migration of Christians is the main reason why Christians' share of the population has been declining in many countries. Many Muslim countries have witnessed disproportionately high emigration rates among their Christian minorities for several generations. Today, most Middle Eastern people in the United States are Christians, and the majority of Arabs living outside the Arab World are Arab Christians.

Push factors motivating Christians to emigrate include religious discrimination, persecution, and cleansing. Pull factors include prospects of upward mobility as well as joining relatives abroad.

Armenian populations exist throughout the world. Although Armenian diaspora communities have existed since ancient times, most of the Armenians living outside of Armenia today are either descendants of Armenian genocide survivors or more recent immigrants from post-Soviet Armenia. According to various estimates, the total number of ethnic Armenians in the world is up to 11 million, a majority of whom live outside of Armenia.

The tables below list countries and territories where Armenians live according to official data and estimates by various individuals, organizations, and media. See also։ Historical Armenian population, Armenian speakers, Armenian population by urban area, and List of Armenian ethnic enclaves.