Bangladesh has records of population data for more than 100 years. With the aid of GIS and other analyzing tools such as shift analysis, these data can depict the trend and pattern of the regional disparity of population of Bangladesh. The study also shows that the development parameters such as access to safe water, Sanitation Facility, Electricity Facility etc. collected in the Population censuses can help us to find out the causes behind the regional disparity of Population. To identify the causes of regional disparity and how to make proper policy for the development of rural Bangladesh several other population characteristics such as age-sex composition are described in this book. The spatio-temporal growth of literacy rate is described here and several mapping techniques are taken under consideration for policy making of the development of literacy rate in the country. The huge influx of population in the urban centers can be easily recognized. The trend and pattern of migration flow can provide us a general picture of push factors and pull factors which may guide the planners while offering regional planning rather than rigorous national planning.