Kolson Kalan is a village in Tariani Chowk tehsil in district of Sheohar, Bihar, India. As per the data provided by Census of India in 2011, total population of Kolson Kalan was 2,529 which includes 1,306 males and 1,223 females. Kolson Kalan covers 315 ha area. Pincode of Kolson Kalan is 843329.