Rayampettai is a village in Thiruvaiyaru tehsil in district of Thanjavur, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Rayampettai was 2,947 which includes 1,463 males and 1,484 females. Rayampettai covers 210.28 ha area. Pincode of Rayampettai is 613204.