There is no consensus as to what exactly constitutes a suburb. This paper examines the range of suburban definitions in terms of their structure and the topical issues that they grapple with. Suburbs have been defined according to many different dimensions from location and transportation modes to culture and physical appearance. Given this confusion, one approach is to abandon the term; another is to use it with greater precision. This is more than just an issue of semantics. Rather how people talk and think about suburbs shapes how they can see such areas being developed and redeveloped in the future.2 Defining Suburbs
The Problem of DefinitionWhat is a suburb? In the coming decades billions of people will move to urban areas. The middle projection from the United Nations is that from 2010 to 2050 the world's urban population will increase from 3.5 billion to 6.3 billion, that is by 80% (U.N. 2010, 29; Clapson and Hutchinson 2010). Many of these new urban dwellers will live in areas that are suburban. How many people, and what that means, depends heavily on how suburbs are defined. This paper explores this issue of how to define suburbs. This is more than just an issue of semantics. As a vibrant literature on framing in planning work suggests, how urbanists, the press, and the public talk and think about suburbs shapes how they can see such areas being developed and redeveloped in the future (Caplan and Nelson, 1973;Rein and Schon 1994;Healey 2009). In coming decades, as new suburban areas are built and older ones head toward redevelopment, clearer definitions, or better alternatives to the term suburb, can help focus academic and practical debates on important issues.