The study examines one of the major Albanian dialect groups – Northern Gheg, further divided into western and eastern parts, – employing several quantitative methods. The aim of the research is to identify the influence of language contacts on the development of the Albanian dialectal area and its subareas. It is found that the Northeastern Gheg varieties, which have been in recent language contact with Slavic dialects, are simpler and more innovative than the Northwestern Gheg varieties. The application of dialectometric methods, in particular to the lexical data, allows us to hypothesize that the very formation of the Northeastern Gheg dialect group is due to language contact.