Madiyanur 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 Madiyanur was 2,540 which includes 1,309 males and 1,231 females. Madiyanur covers 611.32 ha area. Pincode of Madiyanur is 606115.