Demographics
According to the 2011 census Hardoi district has a population of 4,091,380, roughly equal to the nation of Lebanon or the US state of Oregon. This gives it a ranking of 51st in India (out of a total of 640). The district has a population density of 683 inhabitants per square kilometre (1,770 /sq mi) . Its population growth rate over the decade 2001-2011 was 20.39%. Hardoi has a sex ratio of 856 females for every 1000 males, and a literacy rate of 68.89%.
In 1901, the population of Hardoi district was 1,092,834 and Hardoi had 12,174 inhabitants. By the time, the main city was Shahabad with 20,036 inhabitants, Mallanwan 11,158.
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