Cities Agglomeration And Spatial Equilibrium

Using a series of simple models and economic theory, Glaeser illustrates the primary features of urban economics including the concepts of spatial equilibrium and agglomeration economies.

220 million Americans crowd together in the 3% of the country that is urban. 35 million people live in the vast metropolis of Tokyo, the most productive urban area in the world. The central city of Mumbai alone has 12 million people, and Shanghai almost as many. We choose to live cheek by jowl, in a planet with vast amounts of space. Yet despite all of the land available to us, we choose to live in proximity to cities. Using economics to understand this phenomenon, the urban economist uses the tools of economic theory and empirical data to explain why cities exist and to analyze urban issues such as housing, education, crime, poverty and social interaction. Drawing on the success of his Lindahl lectures, Edward Glaeser provides a rigorous account of his research and unique thinking on cities. Using a series of simple models and economic theory, Glaeser illustrates the primary features of urban economics including the concepts of spatial equilibrium and agglomeration economies. Written for a mathematically inclined audience with an interest in urban economics and cities, the book is written to be accessible to theorists and non-theorists alike and should provide a basis for further empirical work.

Empirical research on cities starts with a spatial equilibrium condition: workers and firms are assumed to be indifferent across space. This condition implies that research on cities is different from research on countries, and that work on places within countries needs to consider population, income and housing prices simultaneously. Housing supply elasticity will determine whether urban success shows up in more people or higher incomes. Urban economists generally accept the existence of agglomeration economies, which exist when productivity rises with density, but estimating the magnitude of those economies is difficult. Some manufacturing firms cluster to reduce the costs of moving goods, but this force no longer appears to be important in driving urban success. Instead, modern cities are far more dependent on the role that density can play in speeding the flow of ideas. Finally, urban economics has some insights to offer related topics such as growth theory, national income accounts, public economics and housing prices.

Empirical research on cities starts with a spatial equilibrium condition: workers and firms are assumed to be indifferent across space. This condition implies that research on cities is different from research on countries, and that work on places within countries needs to consider population, income and housing prices simultaneously. Housing supply elasticity will determine whether urban success shows up in more people or higher incomes. Urban economists generally accept the existence of agglomeration economies, which exist when productivity rises with density, but estimating the magnitude of those economies is difficult. Some manufacturing firms cluster to reduce the costs of moving goods, but this force no longer appears to be important in driving urban success. Instead, modern cities are far more dependent on the role that density can play in speeding the flow of ideas. Finally, urban economics has some insights to offer related topics such as growth theory, national income accounts, public economics and housing prices.

This second edition studies the economic reasons for the existence of a variety of agglomerations arising from the global to the local.

When firms and people are located near each other in cities and in industrial clusters, they benefit in various ways, including by reducing the costs of exchanging goods and ideas. One might assume that these benefits would become less important as transportation and communication costs fall. Paradoxically, however, cities have become increasingly important, and even within cities industrial clusters remain vital. Agglomeration Economics brings together a group of essays that examine the reasons why economic activity continues to cluster together despite the falling costs of moving goods and transmitting information. The studies cover a wide range of topics and approach the economics of agglomeration from different angles. Together they advance our understanding of agglomeration and its implications for a globalized world.

Originally published in 1990, The Isolated City State asks the questions, why have the world’s major cities experienced explosive growth? Why does the socio-economic status in North America roughly increase with distance from the city centre, while the socio-economic status in South America roughly decreases? What are the reasons behind the sudden decline of some large, central cities? Will recovery if it happens be equally rapid? Generally, to understand the phenomenon, simplifications are made which make it impossible to understand other phenomena. This major study synthesises a vast amount of theorising and research to provide answers to the major questions of urban geography.

One of our great urbanists and one of our great public health experts join forces to reckon with how cities are changing in the face of existential threats the pandemic has only accelerated Cities can make us sick. They always have—diseases spread more easily when more people are close to one another. And disease is hardly the only ill that accompanies urban density. Cities have been demonized as breeding grounds for vice and crime from Sodom and Gomorrah on. But cities have flourished nonetheless because they are humanity’s greatest invention, indispensable engines for creativity, innovation, wealth, and connection, the loom on which the fabric of civilization is woven. But cities now stand at a crossroads. During the global COVID crisis, cities grew silent as people worked from home—if they could work at all. The normal forms of socializing ground to a halt. How permanent are these changes? Advances in digital technology mean that many people can opt out of city life as never before. Will they? Are we on the brink of a post-urban world? City life will survive but individual cities face terrible risks, argue Edward Glaeser and David Cutler, and a wave of urban failure would be absolutely disastrous. In terms of intimacy and inspiration, nothing can replace what cities offer. Great cities have always demanded great management, and our current crisis has exposed fearful gaps in our capacity for good governance. It is possible to drive a city into the ground, pandemic or not. Glaeser and Cutler examine the evolution that is already happening, and describe the possible futures that lie before us: What will distinguish the cities that will flourish from the ones that won’t? In America, they argue, deep inequities in health care and education are a particular blight on the future of our cities; solving them will be the difference between our collective good health and a downward spiral to a much darker place.