Kachhwi 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 Kachhwi was 8,930 which includes 4,585 males and 4,345 females. Kachhwi covers 884 ha area. Pincode of Kachhwi is N/A.