Ch. 13.2 Models of Urban Structure

Urban Clusters and City Models

Sociologists, economists, and geographers have developed three models to help explain where different types of people tend to live in an urban area-the concentric zone, sector, and multiple nuclei models.
Concentric Zone Model - AP Human Geography
Tiny Urban Farm in the City Lives Green (ABC 7 News )

Concentric Zones

The population expands around the whole city always making the urban area expand.

Sector

A cities sector always expands with the population.