Rongmarjang is a village in Phuloni tehsil in district of Karbi Anglong, Assam, India. As per the data provided by Census of India in 2011, total population of Rongmarjang was 35 which includes 11 males and 24 females. Rongmarjang covers 48 ha area. Pincode of Rongmarjang is N/A.