Dharahia is a village in Sidhaw tehsil in district of Pashchim Champaran, Bihar, India. As per the data provided by Census of India in 2011, total population of Dharahia was 2,243 which includes 1,160 males and 1,083 females. Dharahia covers 358.9 ha area. Pincode of Dharahia is N/A.