The population is unequally distributed amongst the provinces, with about 60% living in the Pampa region (21% of the total area), including 15 million people in Buenos Aires Province, and 3 million each in Córdoba Province, Santa Fe Province and the Autonomous City of Buenos Aires. Seven other provinces each have about one million people: Mendoza, Tucumán, Entre Ríos, Salta, Chaco, Corrientes and Misiones. Tucumán is the most densely populated (with 60 inhabitants/km2, the only Argentine province more densely populated than the world average), while the southern province of Santa Cruz has less than 1 inhabitant/km2.