Kotmi Sonar is a village in Akaltara tehsil in district of Janjgir Champa, Chhattisgarh, India. As per the data provided by Census of India in 2011, total population of Kotmi Sonar was 7,662 which includes 3,953 males and 3,709 females. Kotmi Sonar covers 1420.37 ha area. Pincode of Kotmi Sonar is 495552.