This diploma thesis deals with the main causes, characteristics and effects of structural weaknesses in the peripheral regions of Ireland. In addition to the localization of predominantly rural peripheral areas studies of demographic and socioeconomic conditions of these regions were one of the main focuses of this work. Ireland has been influenced by invasions and conquests from the beginning on. According to the Celts and Vikings, it was the Anglonormans who had a profound and lasting influence on the present-day republic. Constantly changing structures of power, arbitrary land divisions and natural space as well as the great famine and emigration of the nineteenth century hindered an economic progress. Even after the independence of 1922, the country of emigration and agriculture on the fringe of Europe remained behind its potential and an economic and social standstill took place until the middle of the 20th century.Finally, with the opening of the market and the accession to the European Union in the 1970s, the transition to an industrialized state was made within a few decades. Investments from the outside made a socio-economic rise possible, at least in some parts of the country. However, as in the history of Ireland, the rural regions have remained unaffected. The peripheral areas, which are often difficult to access, reinforce the emigration of the already scarce population due to their unfavorable situation and structural weakness. As a result, structural functionalities are increasingly shifting to central areas and thus, intensifying the thinning out of rural areas. In order to counteract this, it is necessary to use appropriate measures for the sustainable strengthening of these peripheral regions in a targeted manner.