Abstract: Sex is an easily identifiable characteristic of an individual. Sex composition of a population refers to the balance between male and female in any population. It can be expressed either in the form of proportion of a particular sex in the population or as a ratio between the population of two sexes. As is obvious, the first one gives the number of males per hundred females or number of males per thousand females in the population and is the most widely used measure of sex ratio the world over. On the country the second provides the number of females per hundred males or number of females per thousand males in the population.