Thillaivilagam is a village in Thiruthuraipoondi tehsil in district of Thiruvarur, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Thillaivilagam was 6,298 which includes 3,045 males and 3,253 females. Thillaivilagam covers 2080.39 ha area. Pincode of Thillaivilagam is 614706.