Sirunahalur 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 Sirunahalur was 1,720 which includes 889 males and 831 females. Sirunahalur covers 396.42 ha area. Pincode of Sirunahalur is 606205.