Thondalvai is a village in Narketpalle tehsil in district of Nalgonda, Telangana, India. As per the data provided by Census of India in 2011, total population of Thondalvai was 3,083 which includes 1,592 males and 1,491 females. Thondalvai covers 1329 ha area. Pincode of Thondalvai is 508254.