Killiyur is a village in Ulundurpettai tehsil in district of Viluppuram, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Killiyur was 4,941 which includes 2,526 males and 2,415 females. Killiyur covers 442.38 ha area. Pincode of Killiyur is 606102.