Abstract: T he hierarchy of urban settlements was first brought within the purview of geographical enquiries by G. K. Zipf in 1931, when he coined the term Central Places. The concept of Central Places was further developed by Walter Christaller in his monumental work on “Central Places in Southern Germany (1933)”. The theory postulates that to maintain efficiency of the settlements, the number of hierarchical central goods and services (functions) fall into categories. The theory is based on a distinction between centres, which are the seats of a supply of goods and services, and peripheries (regions complementing the centre) where demand, i.e. population using them, resides. The notion of centrality justifies clustering in a same place production of service of same level and of same range intended at the population which is scattered in the complementary region (or influence area), whose customers are polarised by the centre.