Kaithahar Khurd is a village in Rajpur tehsil in district of Buxar, Bihar, India. As per the data provided by Census of India in 2011, total population of Kaithahar Khurd was 3,194 which includes 1,669 males and 1,525 females. Kaithahar Khurd covers 314 ha area. Pincode of Kaithahar Khurd is 802213.