Purana Lohmarwa is a village in Saraiyahat tehsil in district of Dumka, Jharkhand, India. As per the data provided by Census of India in 2011, total population of Purana Lohmarwa was 291 which includes 143 males and 148 females. Purana Lohmarwa covers 34.91 ha area. Pincode of Purana Lohmarwa is 814151.