Chad's national statistical agency projected the country's 2015 population between 13,630,252 and 13,679,203, with 13,670,084 as its medium projection; based on the medium projection, 3,212,470 people lived in urban areas and 10,457,614 people lived in rural areas. The country's population is young: an estimated 47% is under 15. The birth rate is estimated at 42.35 births per 1,000 people, and the mortality rate at 16.69. The life expectancy is 52 years.