Thevaiyur is a village in Veppanthattai tehsil in district of Perambalur, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Thevaiyur was 4,655 which includes 2,330 males and 2,325 females. Thevaiyur covers 1031 ha area. Pincode of Thevaiyur is 621115.