Rongjangphong is a village in Donka tehsil in district of Karbi Anglong, Assam, India. As per the data provided by Census of India in 2011, total population of Rongjangphong was 116 which includes 60 males and 56 females. Rongjangphong covers 25 ha area. Pincode of Rongjangphong is 782448.