In the present paper we have to study future population forecasting in India by the geometrical model used to census population data. Design is based on the projected population of India, estimated for the design period. Changes in population over the years occur, and the system should be designed into account of the population at the end of the design period. Factors affecting changes in population are increase due to births, decrease due to deaths, increase and decrease due to the migration and increase due to the annexation. The present and past population record in India can be obtained from the census population records. After collecting these population records, the population at the end of design period is predicted using various geometrical methods as suitable for the growth pattern.

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