This trend, which the authors call employment deconcentration, is distinct from the other well-known regional trend, namely, the postwar movement of jobs and people from the frostbelt to the sunbelt. The authors also show that deconcentration has been accompanied by a similar trend within metropolitan areas, wherein employment share of the denser sections of MSAs has declined and that of the less dense sections risen. The authors provide a general equilibrium model with density-driven congestion costs to suggest an explanation for employment deconcentration.

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