Kachhiawan is a village in Nagar Nausa tehsil in district of Nalanda, Bihar, India. As per the data provided by Census of India in 2011, total population of Kachhiawan was 3,872 which includes 2,026 males and 1,846 females. Kachhiawan covers 267 ha area. Pincode of Kachhiawan is 801302.