With a population of 3,384,569 (2007 census), the city is the largest in the country. Many of the wealthiest people live in the southeast (Bole), southwest (old airport), CMC, Ayat and Lamberet parts of town. There are more than 120 international missions and embassies in Addis Ababa, making the city a hub for international diplomacy concerning Africa. The headquarters of the African Union and the UN Economic Commission for Africa (UNECA) are both in the city. The European Union and the United States both have two delegations in Addis Ababa, one for bilateral relations with Ethiopia and one for the African Union.