Unlike the mahalle, the semts never were legal administrative units. The
mahalle, however, was always both a basic urban administrative unit and a
social and economic entity. However, these two meanings never completely
overlapped. The centrally determined administrative network of Ottoman
Istanbul and the web of local identities did not necessarily coincide. This was
so in the inceptive fifteenth and sixteenth centuries as well as in the “modernizing” nineteenth. The perception of the urban population regarding their
environment and their self-definition in relation to their immediate surrounding
was always more important than the religious/administrative matrix imposed
upon the cityscape for purposes of control or tax collection.