Kaithwalia is a village in Sugauli tehsil in district of Purba Champaran, Bihar, India. As per the data provided by Census of India in 2011, total population of Kaithwalia was 3,865 which includes 2,021 males and 1,844 females. Kaithwalia covers 300 ha area. Pincode of Kaithwalia is N/A.