Kothal Bagan is a village in Diphu tehsil in district of Karbi Anglong, Assam, India. As per the data provided by Census of India in 2011, total population of Kothal Bagan was 158 which includes 85 males and 73 females. Kothal Bagan covers 30 ha area. Pincode of Kothal Bagan is 782460.