Bamanwas Nau is a village in Narnaul tehsil in district of Mahendragarh, Haryana, India. As per the data provided by Census of India in 2011, total population of Bamanwas Nau was 1,697 which includes 866 males and 831 females. Bamanwas Nau covers 589 ha area. Pincode of Bamanwas Nau is 123001.