Gamhar Gachhi is a village in Kadwa tehsil in district of Katihar, Bihar, India. As per the data provided by Census of India in 2011, total population of Gamhar Gachhi was 432 which includes 225 males and 207 females. Gamhar Gachhi covers 24 ha area. Pincode of Gamhar Gachhi is N/A.