It is well-known that there are significant differences among the European Union regions, which have been heightened due to the most recent enlargement in 2004. This paper aims to analyze this diversity and propose a classification of European Regions (EU) that is adjusted to the different axes of socioeconomic development and, simultaneously, is useful for European regional policy purposes. The data used in this paper were published by the European Union Statistical Office (Eurostat) and correspond to the main statistical indicators of NUTS2 (Nomenclature of Territorial Units for Statistics) regions in the EU. Multivariate statistical techniques allowed the identification of clusters of socioeconomic similarity, which are contrasted with the classes considered in the financial proposal of the European Commission (EC) for the period 2007-2013. It was found that each of the two main groups of the EC classification – convergence regions and competitiveness and employment regions – comprises at least two significantly different groups of regions, which differ not only in their average income but also in other indicators associated with their particular weaknesses. Also, it has been revealed that two other groups–phasing-in regions and phasing-out regions –, beyond their inexpressive denomination, lack homogeneity, being spread throughout different clusters.
