Located more or less at the dead centre of Ethiopia, and surrounded by the state of Oromia, the capital city of Ethiopia is governed as a 540 square km city-state of which less than 5% is rural. According to 2013 estimates of the Central Statistical Agency of Ethiopia, the population of Addis Ababa is 3.1 million of which 51.6% are female. Almost half of Addis Ababa cosmopolitan population is Amhara, with Oromo, Gurage and Tigraian residents respectively making up 19%, 17% and 7.6% of the remainder. More than 80% of its residents are Orthodox Christians. The capital city is subdivided into six zones and 28 woredas. Amharic is the working language, but English is widely spoken.