Amaithi Kalan is a village in Manjha tehsil in district of Gopalganj, Bihar, India. As per the data provided by Census of India in 2011, total population of Amaithi Kalan was 1,840 which includes 943 males and 897 females. Amaithi Kalan covers 128 ha area. Pincode of Amaithi Kalan is N/A.