Periyavalayam is a village in Udayarpalayam tehsil in district of Ariyalur, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Periyavalayam was 3,282 which includes 1,624 males and 1,658 females. Periyavalayam covers 1045.31 ha area. Pincode of Periyavalayam is 621802.