During the past two decades, urban populations have been gradually increasing in the OECD area.
Demographic trends such as population growth can strongly affect economic, social, and environmental conditions that consequently shape national and regional policies. In 2017, around half of the population of the OECD (48%) lived in regions with predominantly urban population (“predominantly urban regions”), which represented only 8% of the total OECD surface area. The remaining population lived in either intermediate regions (27%) or in regions with predominantly rural population (“predominantly rural regions”) ( 3.1).