Phunagaon is a village in Barsoi tehsil in district of Katihar, Bihar, India. As per the data provided by Census of India in 2011, total population of Phunagaon was 3,041 which includes 1,591 males and 1,450 females. Phunagaon covers 178 ha area. Pincode of Phunagaon is 855102.