Demographics
According to the 2011 census Giridih district has a population of 2,445,203 roughly equal to the nation of Kuwait or the US state of New Mexico. This gives it a ranking of 182nd in India (out of a total of 640). The district has a population density of 497 inhabitants per square kilometre (1,290 /sq mi) . Its population growth rate over the decade 2001-2011 was 28.33%. Giridih has a sex ratio of 943 females for every 1000 males, and a literacy rate of 65.12%.
Khortha, a blend of Magahi and Bengali, is the main language spoken in Giridih district. The tribal people speak Santhali.
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