http://www.un.org/ga/Istanbul+5/statereport.htm

Three billion people - nearly every other person on earth - already live in cities. Today the planet hosts 19 cities with 10 million or more people; 22 cities with 5 to 10 million people; 370 cities with 1 to 5 million people; and 433 cities with 0.5 to 1 million people. By 2030, over 60 percent of the world's population (4.9 billion out of 8.1 billion people) will live in cities. The current worldwide rate of urbanization (that is, the percentage, per year, that the urban share of the total population is expanding) is about 0.8 percent, varying between 1.6 percent for all African countries to about 0.3 percent for all highly industrialized countries. Urbanization of poverty is a growing phenomenon; it is estimated that between one-quarter and one-third of all urban households in the world live in absolute poverty. Starting with this 2001 edition, the State of the World's Cities Report takes the reader through Africa, the Arab States, Asia and the Pacific, the highly industrialized countries, Latin America and the Caribbean and countries with economies in transition to understand better how shelter, society, environment, economy, and, above all, systems of governance can contribute to urban vibrancy and viability in a globalizing world. (Au)