Barharwa Kalan is a village in Kotwa tehsil in district of Purba Champaran, Bihar, India. As per the data provided by Census of India in 2011, total population of Barharwa Kalan was 16,045 which includes 8,458 males and 7,587 females. Barharwa Kalan covers 1403.9 ha area. Pincode of Barharwa Kalan is 845437.