Kothwatanr is a village in Jamua tehsil in district of Giridih, Jharkhand, India. As per the data provided by Census of India in 2011, total population of Kothwatanr was 324 which includes 165 males and 159 females. Kothwatanr covers 165.28 ha area. Pincode of Kothwatanr is 815318.