Kaithaulia is a village in Baruraj tehsil in district of Muzaffarpur, Bihar, India. As per the data provided by Census of India in 2011, total population of Kaithaulia was 2,484 which includes 1,300 males and 1,184 females. Kaithaulia covers 120 ha area. Pincode of Kaithaulia is 843127.