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Abstract
In this Paper the present study reveals in TamilNadu there are 32 districts 215 sub districts 1097 towns and 15979 villages as per census 2011, the top ten lowest Child Sex ratio District wise in TamilNadu state during 2001 – 2011. Tamil Nadu is the 11th largest state regarding the geographical area and 7th largest state in respect of population in India. The sex ratio is usually defined as the number of female per thousand males. Sex ratio in Tamil Nadu has declined decadal population 2001 – 2011 the sex ratio large variation from one district to another district in TamilNadu state. TamilNadu trend child sex ratio 2001 – 2011 from 987 in 2001 to 996 in 2011 .sex ratio 0-6 also total 942 in 2001 to 943 in 2011 .