Sukhlahi is a village in Mainatanr tehsil in district of Pashchim Champaran, Bihar, India. As per the data provided by Census of India in 2011, total population of Sukhlahi was 4,568 which includes 2,426 males and 2,142 females. Sukhlahi covers 447 ha area. Pincode of Sukhlahi is 845306.