Christianity has a presence in Iraq dating to the first century, and Syriac Christianity, the Syriac language and Syriac alphabet evolved in Assyria in northern Iraq.

The Arab Christian community in Iraq is relatively small, and further dwindled due to the Iraq War to just several thousand.
Most Arab Christians in Iraq belong traditionally to Greek Orthodox and Catholic Churches and are concentrated in major cities such as Baghdad, Basra and Mosul.

The vast majority of the remaining 450,000 to 900,000 Christians in Iraq are Assyrian people, who follow Syriac Christianity, most notably the Chaldean Catholic Church, Assyrian Church of the East, Ancient Church of the East, Syriac Orthodox Church, Assyrian Evangelical Church and Assyrian Pentecostal Church.
More than two-thirds of Iraqi Christians have fled or immigrated to other countries this century.
In the 1987 Iraq census there were 1.4 million Christians in a population of 22 million but the numbers had fallen to 800-900,000 by the outbreak of the 2003 war due to emigration (Irinnews 2006 and BBC article 2010).

While there has been voluntary relocation of many Assyrian Christian families to the Assyrian homeland in northern Iraq, recent reporting indicates that the overall Christian population may have dropped by as much as 50 percent since the fall of Ba'athist Iraq in 2003, with many fleeing to Syria, Jordan, and Lebanon (2010 est.)
Significant persecution and displacement of Iraqi Christians in Mosul and other areas held by ISIS occurred from 2014 onwards, with Christian houses identified with the Arabic letter "N" for "Nasrani" (Christian).
Christianity has a presence in Iraq dating to the first century, and Syriac Christianity, the Syriac language and Syriac alphabet evolved in Assyria in northern Iraq.
The Arab Christian community in Iraq is relatively small, and further dwindled due to the Iraq War to just several thousand. Most Arab Christians in Iraq belong traditionally to Greek Orthodox and Catholic Churches and are concentrated in major cities such as Baghdad, Basra and Mosul.
The vast majority of the remaining 450,000 to 900,000 Christians in Iraq are Assyrian people, who follow Syriac Christianity, most notably the Chaldean Catholic Church, Assyrian Church of the East, Ancient Church of the East, Syriac Orthodox Church, Assyrian Evangelical Church and Assyrian Pentecostal Church. More than two-thirds of Iraqi Christians have fled or immigrated to other countries this century. In the 1987 Iraq census there were 1.4 million Christians in a population of 22 million but the numbers had fallen to 800-900,000 by the outbreak of the 2003 war due to emigration (Irinnews 2006 and BBC article 2010).
While there has been voluntary relocation of many Assyrian Christian families to the Assyrian homeland in northern Iraq, recent reporting indicates that the overall Christian population may have dropped by as much as 50 percent since the fall of Ba'athist Iraq in 2003, with many fleeing to Syria, Jordan, and Lebanon (2010 est.) Significant persecution and displacement of Iraqi Christians in Mosul and other areas held by ISIS occurred from 2014 onwards, with Christian houses identified with the Arabic letter "N" for "Nasrani" (Christian).
Arab Christians