Pethasamudram is a village in Kallakkurichi tehsil in district of Viluppuram, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Pethasamudram was 1,823 which includes 906 males and 917 females. Pethasamudram covers 580.78 ha area. Pincode of Pethasamudram is 606301.