Demographic analysis can be attached to whole societies or to knot defined by criteria such as culture, origin, monotheism and ethnicity. It can be a very common knowledge that can be appropriate to any kind of energetic living population, i.e., one that diversify over measure or track. Demography is the statistical study of man populations. It encloses the muse of the size, makeup, and distribution of these populations, and spatial and/or temporal innovate in them in response to consanguineous, transmigration, senescent, and extinction (Kotler and Schlesinger, 2001). This notice will sustain the co-partners to decide how much metropolis to allot to performance and advertising. Formal demography limits its goal of meditation to the menstruation of population’s outgrowth, while the broader field of social demography population meditation also psychoanalyses the relationships between frugal, companionable, cultural and biologic outgrowth reputation a population. In improved countries with useful registration systems, enrolment statistics are the cream regularity for rate the number of extraction and deaths. Segmenting a population into demographics allows circle to charged the size of a potentially market and also to see whether its products and services are extension that company’s most essential consumers (Capron and Glazer, 2001). Direct data come from essential statistics registries that track all lineage and deaths as well as indubitable diversify in lawful state such as matrimony, divorce, and migration. Epidemiologists rely on other scientific instruct like biology to better understand ailing outgrowth, statistics to make potent use of the data and draw appropriate conclusions, social sciences to better perceive next and distal source, and engineering for exposure assessment. Epidemiology has helped develop methodology utility in clinical exploration, common soundness studies and, to a inferior extent, basic examination in the biological sciences (Cooper, 2000). Analytic epidemiology generalship ponders to test the conclusions of figurative surveys or laboratory observations. Major areas of epidemiologic study conclude disease etymology, insurrection examination, affection surveillance and screening, bio monitoring, and comparisons of treat effects such as in clinical trials. It is the cornerstone of public euphoria, and informs policy decisions and evidence-based Art by identifying endanger agent for disease and targets for obviating healthcare. The discipline is critical to illness thwarting because it sheds skylight on why a particular disease start, how it spreads, and its effective control. Epidemiology is the science that meditations the patterns, causes, and effects of health and distemper plight in explain populations (Pearce and Robinson, 2005). It concentrate on bunch rather than individuals and often takes a historical optical. Descriptive epidemiology view a population to see what line segment are attached by a disorder, succeed changes or variations in its occurrence or mortality over opportunity and in separate locations, and serve recognize syndromes or present associations with risk substitute. Epidemiologists help with study design, collection and statistical analysis of data, and interpretation and dissemination of terminate (Kotler, 2008).