Mannankadu is a village in Pattukkottai tehsil in district of Thanjavur, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Mannankadu was 2,658 which includes 1,207 males and 1,451 females. Mannankadu covers 620.4 ha area. Pincode of Mannankadu is 614613.