Argentina is highly urbanized, with the ten largest metropolitan areas accounting for half of the population, and fewer than one in ten living in rural areas. About 3 million people live in Buenos Aires proper, and the Greater Buenos Aires metropolitan area totals around 13 million, making it one of the largest urban areas in the world. The metropolitan areas of Córdoba and Rosario have around 1.3 million inhabitants each, and six other cities (Mendoza, Tucumán, La Plata, Mar del Plata, Salta and Santa Fe) have at least half a million people each.