Adaiyur 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 Adaiyur was 2,315 which includes 1,159 males and 1,156 females. Adaiyur covers 740.17 ha area. Pincode of Adaiyur is 607201.