Annappanpettai is a village in Papanasam tehsil in district of Thanjavur, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Annappanpettai was 1,856 which includes 933 males and 923 females. Annappanpettai covers 549.1 ha area. Pincode of Annappanpettai is 613003.