structure Baby boom Demographic analysis Demographic transition List of countries by median age Middle East Youth Initiative Overpopulation Political demography Population Population growth Sex ratio Waithood References Citations Additional references U.S. Census Bureau, Demographic Internet Staff (June 27, 2011). "International Programs, International Data Base". Information Gateway. U.S. Census Bureau. "Population Reference Bureau – Inform, Empower, Advance". Population Reference Bureau. "Databases". United Nations. Zarulli, Virginia, et al. "Women Live Longer than Men Even During Severe Famines and Epidemics". Proceedings of the National Academy of Sciences, National Academy of Sciences, Jan 3 2018. External links World Population Prospects, the 2010 Revision, Website of the United Nations Population Division with population pyramids for all countries U.S. Census Bureau, International Statistical Agencies U.S. Census Bureau, International Database (IDB) Australian animated population pyramids, Australian Bureau of Statistics Interactive population pyramids of metropolitan France 1901-2060 (INSEE) Demographic economics Ageing Demographics Demography Population geography Statistical charts and diagrams