Athandamarudur 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 Athandamarudur was 2,239 which includes 1,130 males and 1,109 females. Athandamarudur covers 236.48 ha area. Pincode of Athandamarudur is 605803.