Melaiyur is a village in Thiruvidaimarudur tehsil in district of Thanjavur, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Melaiyur was 2,828 which includes 1,422 males and 1,406 females. Melaiyur covers 549.28 ha area. Pincode of Melaiyur is 612101.