Agastyarmoolai is a village in Tirukkoyilur tehsil in district of Viluppuram, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Agastyarmoolai was 574 which includes 291 males and 283 females. Agastyarmoolai covers 53.23 ha area. Pincode of Agastyarmoolai is 605756.