Sociology Plus
Concentric Zone Theory Definition
The Concentric Zone Theory was a model proposed by E. Burgess, a member of the Chicago school, which posits that cities in industrialised societies develop in a series of five concentric rings radiating outwards from the central business district (CBD). This structure is viewed as an ideal type representing the natural tendencies of urban expansion. The theory suggests that competition for land dictates the arrangement of these zones, following principles analogous to ecological competition between species.
Structure and Composition
Burgess’s model delineates five successive zones based on residential composition: the innermost ring is the central business district, containing primary commercial and service facilities. Surrounding this are the zone of transition, an area undergoing development where older housing is replaced by run-down accommodation; the zone containing manual workers; the middle-class suburbs; and finally, the commuters’ zone on the city fringes. The theory further suggests that successive waves of migration follow one another, with ethnic or racial groups moving outwards from the zone of transition as they prosper.
Theoretical Underpinnings
The theory is rooted in the principles of urban ecology, suggesting that these zones are created by impersonal forces independent of population intention. Competition for land drives this spatial arrangement, where activities capable of affording high rents occupy prime central locations. Social and economic mobility causes changes in territorial occupation through ecological processes such as invasion, domination, and succession. These processes result in an ‘urban mosaic’ formed by distinct local communities within each zone, defined by occupational status or ethnic identity.
Criticisms and Legacy
While the theory remains useful, particularly in illustrating the dynamics of the zone of transition, it has faced extensive criticism. Critics have argued that cities are better described as sectors rather than concentric rings, suggesting that land values may be determined more by cultural values than purely competitive forces. Although later geographers and economists developed more complex diagrams using large datasets, the original theory contributed significantly to the development of urban sociology, particularly in the study of housing class and invasion-succession models within Chicago sociology.