Administrative divisions of Iraq
Iraq is divided into 18 first-level administrative divisions:
Largest cities in Iraq
| # | City | Population |
|---|---|---|
| 1 | BaghdadCapital | 5,054,000 |
| 2 | Mosul | 1,316,000 |
| 3 | Duhok | 986,000 |
| 4 | Irbil | 926,000 |
| 5 | Basra | 870,000 |
| 6 | As Sulaymaniyah | 723,170 |
| 7 | Najaf | 665,552 |
| 8 | Kirkuk | 601,433 |
| 9 | Al Hillah | 594,605 |
| 10 | Karbala | 510,692 |
Baghdad is the largest urban area in Iraq with about 5,054,000 people.
Terrain, rivers & lakes
Highest terrain in Iraq: ≈ 3,570 m — read from the global elevation model, so summit heights are approximate. The physical map paints elevation bands from green lowlands to brown highlands.
🌊 Rivers
- Dicle
- Tigris
- Gharraf Canal
- Atshan
- Hindiyah Channel
- Shatt al Hillah
- Euphrates
- Al Furat
- Karkheh
- Shatt al Arab
🏞️ Lakes
- Lake Habbaniyah
- Buhayrat ath Tharthar
- Lake Razazah
- Lake Hammar
Ethnic groups in Iraq
Arab 75-80%, Kurdish 15-20%, other 5% (includes Turkmen, Yezidi, Shabak, Kaka'i, Bedouin, Romani, Assyrian, Circassian, Sabaean-Mandaean, Persian)
Regionally, Arab is the most common ethnic group across most of the 18 divisions, while Kurdish predominates in 4 divisions (Dihok, Arbil, As-Sulaymaniyah, At-Ta'mim).
Source: CIA World Factbook · regional dominance compiled by Glostats from censuses and surveys
Religions in Iraq
Muslim (official) 95-98% (Shia 61-64%, Sunni 29-34%), Christian 1% (includes Catholic, Orthodox, Protestant, Assyrian Church of the East), other 1-4% (2015 est.)
Regionally, Muslim is the most common religious group across most of the 18 divisions.
Source: CIA World Factbook (2015 est.) · regional dominance compiled by Glostats from censuses and surveys
Languages in Iraq
Arabic (official), Kurdish (official); Turkmen (a Turkish dialect) and Syriac (Neo-Aramaic) are recognized as official languages where native speakers of these languages are present
Regionally, Arabic is the most common language group across most of the 18 divisions, while Kurdish predominates in 4 divisions (Dihok, Arbil, As-Sulaymaniyah, At-Ta'mim).
Source: CIA World Factbook · regional dominance compiled by Glostats from censuses and surveys
Explore more
Sources: boundaries, cities, rivers and lakes from Natural Earth (public domain, 1:10m); elevation from the AWS Open Data terrain tiles (SRTM/GMTED); ethnic, religious and language shares from the CIA World Factbook; regional dominance compiled by Glostats from national censuses and surveys. Page generated 2026-10-19. More about our data.