Demographics

Are compact cities healthy cities? One argument for compact cities is that they are good for our health.  The New Zealand Public Health Advisory Committee in 2008, for example, cited four principles for healthy urban planning based on the density of development: urban regeneration, compact growth, focused decentralisation, and linear concentration.  The aim is less time in cars and more use of active transport.  read more »

Perhaps the most surprising development in urban areas over the past year was the ascendancy of Delhi to rank second in the world in population, following only Tokyo – Yokohama. Based upon the new United Nations population estimate, the 7th annual edition of Demographia World Urban Areas places Delhi's population at 22.6 million.  read more »

Detroit, not only in the US but across the globe, has become the poster child for urban decay.  The city lost 25% of its population between 2000-2010, and over half its population since 1950.  Over 90,000 houses stand empty, and many neighborhoods have been completely abandoned.   read more »

A new census leads us to ask how population has changed, but usually discussion is focused on changes since the last census. But even more interesting is to appreciate the vaster changes over a greater sweep of time, for example: the fifty years since 1960, when the United States had 179 million people, toward the end of the post-war Baby Boom.  read more »

For years, demographers have been predicting that the population of Japan would begin to decline. The  census of Japan, conducted every five years, however, still continues to show slight population growth, with 288,000 people having been added between 2005 and 2010. This growth was so small that the nation of Japan added fewer people than seven US metropolitan areas (Dallas-Fort Worth, Houston, Washington, Atlanta, Riverside-San Bernardino, Phoenix and Raleigh) and less than the Toronto metropolitan area over the same period of time.  read more »

Dramatic shifts in population growth across the United States in the last decade should surprise no one. Some patterns are continuing trends of earlier decades, but other patterns show substantial change.  I show these changes in three ways, first a conventional choropleth map coloring counties by broad classes from high losses to moderate and high percent gain, second a map in which absolute gains and losses are depicted by proportional symbols, with colors showing the rate of change, and third, a look a counties that experienced either extreme loss and gain.   read more »

We live in an era of the heady drumbeat of urban triumphalism. In a world that is now, by some measures, predominately urban, observers like historian Peter Hall envision a “coming golden age” of great cities. It is time to look at such claims more closely, replacing celebratory urban legends with careful analysis. Although the percentage of people living in cities is certain to grow, much of this growth will be in smaller cities, suburbs and towns.  read more »

The National Bureau of Statistics of China has just released the first results of the 2010 census. The new figures portray a radically reduced population growth rate, rapid urbanization and an unprecedented domination of population growth by the East Coast.  read more »

These may be far from the best of times, but they are no longer the worst. Last year’s annual “Best Cities for Jobs” list was by far the most dismal since we began compiling our rankings almost five years ago. Between 2009 and 2010, only 13 of 397 metropolitan areas experienced any growth at all. For this year’s list, which measured job growth in the period between January 2010 and January 2011, most of the best-performing areas experienced actual employment increases — even if they were modest.  read more »

Urbanist media can’t seem to get enough of the megacity these days. Much of the commentary surrounding this topic is disconcertingly celebratory about these leviathans despite such phenomena as overcrowding, high levels of congestion and sprawling slums.  read more »