Mandalakkottai is a village in Orathanadu tehsil in district of Thanjavur, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Mandalakkottai was 1,329 which includes 641 males and 688 females. Mandalakkottai covers 380.5 ha area. Pincode of Mandalakkottai is 614625.