Gunakarpur is a village in Lakhnaur tehsil in district of Madhubani, Bihar, India. As per the data provided by Census of India in 2011, total population of Gunakarpur was 3,030 which includes 1,623 males and 1,407 females. Gunakarpur covers 197.4 ha area. Pincode of Gunakarpur is 847403.