•Trends in birth, death, and migration are changing the absolute and relative size of young and old, rural and urban, and ethnic majority and minority populations within and among emerging and established powers.
•These demographic reconfigurations will offer social and economic opportunities for some powers and severely challenge established arrangements in others.
World population will grow
•The 31st October is a symbolic date. The world population reached exactly 7 billion on 31 October 2011., which is based on interpolated data from the original 5-year period estimates prepared by the Population Division.
•World population is projected to grow by about 1.2 billion between 2009 and 2025— from 6.8 billion to around 8 billion people.
Growth rate will be low
•Although the global population increase is substantial—with concomitant effects on resources—the rate of growth will be slower than it was, down from levels that added 2.4 billion persons between 1980 and today.
Global population growth:
A developing country phenomenon
A developing country phenomenon
Populations Growing, Declining, and
Diversifying—at the Same Time
Diversifying—at the Same Time
•Demographers project that Asia and Africa will account for most of the population growth out to 2025 while less than 3 percent of the growth will occur in the “West”—Europe, the United States, Canada, Australia, and New Zealand.
•In 2025, roughly 16 percent of humanity will live in the West, down from the 18 percent in 2009 and 24 percent in 1980.
World Population in 2025, Selected Countries
Europe is the only world region projected to decline in population by 2050.
•In aggregate, the countries of Sub-Saharan Africa are projected to add about 350 million people during the same period, while those in Latin America and the Caribbean will increase by about 100 million.
Declining population in some countries
•Between now and 2025, Russia, Ukraine, Italy, almost all countries in Eastern Europe, and Japan are expected to see their populations decline by several percent. These declines could approach or exceed 10 percent of the current population in those countries.
“Oldest” Vs “youngest” countries
•By 2025, the national population age structures promises to be more varied than ever, and the gap between the youngest and oldest profiles will continue to widen.
•The “oldest” countries—those in which people under age 30 form less than one-third of the population—will mark a band across the northern edge of the world map.
•In contrast, the “youngest” countries, where the under-30 group represents 60 percent of the population or more, will nearly all be located in Sub-Saharan Africa.
Proportions Aged 65+ and Under Five: 1950-2050
Oldest and Youngest Countries: (median age)
