Urban areas are defined on the basis of a number of criteria. In general, there appears to be three main criteria for determining the status of a settlement and these are;
(a) The land use approach; (b) The functional area approach; and (c) The density approach. The first relates to the extent to which the settlement is closely built up and the uses to which the built up area are put to.
The second approach identifies the hinterland over which a settlement is considered important particularly in the provision of jobs, services and facilities while the third approach is based on the scale of some phenomena such as population, buildings etc (The UK Department for Communities and Local Government, 2002). Similarly, the United Nations Statistics Division (2007) states that the definition of urban/rural areas is based on both qualitative and quantitative criteria that may include any combination of the following: size of population, population density, distance between built-up areas, predominant type of economic activity, conformity to legal or administrative status and urban characteristics such as specific services and