These cities are characterized by growth that occurred primarily during the period between the end of the Second World War and the economic downturn of 1973-1974. These cities, adjacent to the Urban cities, experienced rapid development fueled by an expanding population and the expanding highway system.

Highway accessibility led to many of these cities developing as centers of office, commercial, institutional, and industrial uses, resulting in a high density of jobs. The increased influence of automobiles resulted in a development pattern that reflects an increased emphasis on traffic movement and circulation, which contributes to their transitional character between denser urban cities and more spread-out suburban areas. Similar to Urban areas, the age of their building stock and access to transit – facilitated by their relatively high street connectivity – provides opportunities for redevelopment at high densities.

Urban Edge areas face similar urban challenges, such as managing increased surface temperatures and safeguarding drinking water quality, which requires tailored environmental and infrastructure solutions.