Vellaiyur is a village in Gangavalli tehsil in district of Salem, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Vellaiyur was 3,139 which includes 1,622 males and 1,517 females. Vellaiyur covers 1119.03 ha area. Pincode of Vellaiyur is 636116.