Jamnia Chak is a village in Narayanpur tehsil in district of Jamtara, Jharkhand, India. As per the data provided by Census of India in 2011, total population of Jamnia Chak was 117 which includes 61 males and 56 females. Jamnia Chak covers 19.84 ha area. Pincode of Jamnia Chak is 815351.