Multiple choice After how many years is the population census carried out in India? 5 years 7 years 9 years 10 years Reveal answer Fill a bubble to check yourself D Correct answer Explanation The population census in India is conducted every 10 years. The first synchronous census was conducted in 1881, and since independence, it has been regularly conducted decennially (1951, 1961, 1971, 1981, 1991, 2001, 2011).