Approximately three million people live in the City of Buenos Aires (the Federal Capital of Argentina with 202 km² [78. 3 mi²]). The City is divided into 48 districts or barrios (neighborhoods). Its metropolitan area, Great Buenos Aires (Gran Buenos Aires), is the 22nd most populated urban center in the world with over 14 million people. Most of the country's activity is highly concentrated in this single city and its surroundings.