Pennaivalam 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 Pennaivalam was 3,720 which includes 1,907 males and 1,813 females. Pennaivalam covers 685.02 ha area. Pincode of Pennaivalam is 605803.