Today there are thought to be perhaps 15,000 Armenians remaining in Baku after most fled in the early 1990s following anti-Armenian pogroms. Those remaining are almost exlusively cases of mixed marriages, usually where the wife is Armenian and the husband Azeri.
Before the arrival of Turkish tribes a thousand years ago, Azerbaijan was a Christian state known as Caucasian Albania, or in Armenian Aghvan (sp?). Their church followed the same branch of Christianity as the Armenian Church, and they used the same alphabet.
On the lowlands, the Turkic conquers began to assimilate the local population, who slowly adopted the language and religion of the Turks. In the mountains, pockets of Christians remained, and the Albanian Church remained intact until the 1800s, when the Russian rulers abolished the Albanian Church and what remained was absorbed into the Armenian Church.
The Turkic tribes were called Turks or Tartars until the founding of Azerbaijan in 1918, when that term came into use for the country and people.
(Check accuracy of the text above!!! -Raffi)