Demography is the scientific study of human populations primarily with respect to their size, their structure and their development; it takes into account the quantitative aspects of their general characteristics. The Study of Demography is an important area of investigation in the field of economics especially since problem of economic development and development planning come to the fore front in most developing countries. Population growth, size and distribution cannot be discussed exhaustively except in the context of economic growth or change. This book covers all the aspects of Demography and covers topics like Theories of population, Historical evidence of population growth, population growth pattern in developed and developing countries, factors that affect population growth, technique of analysis, gross reproduction rate, meaning of life table, population projection and changes in family structure. This book is also a beginner's guide for demography concepts and its analysis.