Methodology

In 2011, the Commission Directorates-General for Regional and Urban Policy, Agriculture and Rural Development, Eurostat and the Joint Research Centre (JRC) together with the OECD revised the Degree of urbanisation classification (DEGURBA) and prepared a common methodology, to be used by the entire Commission as well as the OECD.

The methodology classifies Local Administrative Units level 2 (LAU2 or communes) based on a combination of criteria of geographical contiguity and minimum population threshold applied to 1 km2 population grid cells.

This approach, based on mapping the territory by a grid square cell of 1 km2, avoids distortions caused by using LAU2 varying in size and/or shape.

This Degree of urbanisation creates a three-way classification of LAU2 as follows:

  • Cities (alternate name: densely populated areas):
    At least 50% of the population lives in urban centres.
  • Towns and suburbs (alternate name: intermediate density areas):
    At least 50% of the population lives in urban clusters and
    Less than 50% of the population lives in urban centres.
  • Rural areas (alternate name: thinly populated areas):
    At least 50% of the population lives in rural grid cells.
     

Schematic overview of the system of urban/rural typologies including the DEGURBA classification:

Click to enlarge