Kalavanur 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 Kalavanur was 1,032 which includes 501 males and 531 females. Kalavanur covers 350.24 ha area. Pincode of Kalavanur is 606102.