Census helps in presenting a clear picture of different aspects of population. This helps government in the preparation and execution of plans relating to education, health, employment etc. Census tells whether the population is increasing or decreasing. The knowledge of rate of birth helps in the formation of plans to cater to the needs of people in future. It also gives the ratio of urban to rural population and is helpful in holding elections because on the basis of population only, the number of voters is fixed in a constituency or polling station. Besides, census helps in improving the law and order, economic, social and other conditions too.
The first census in our country was conducted in 1872. Since then it has been repeated every ten years. The latest census was done in the year 1992.