Kenya belongs to the middle-income countries of Sub-Saharan Africa. It has one of the fastest growing populations of the continent, having witnessed a 40 percent population increase in ten years’ time (Kenya CBS, 1994). Overall, its average population density is not particularly high when compared to other African countries. However, the largest part of Kenya consists of sparsely populated dry lowlands, and 18 percent of the land accommodates 80 percent of the population. Population concentrations are found in the highland areas of central and western Kenya and along the shores of Lake Victoria and the Indian Ocean.