Mehnaul Kalan is a village in Gaunaha tehsil in district of Pashchim Champaran, Bihar, India. As per the data provided by Census of India in 2011, total population of Mehnaul Kalan was 2,739 which includes 1,485 males and 1,254 females. Mehnaul Kalan covers 165.1 ha area. Pincode of Mehnaul Kalan is 845102.