Alagappasamudram is a village in Panruti tehsil in district of Cuddalore, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Alagappasamudram was 3,000 which includes 1,548 males and 1,452 females. Alagappasamudram covers 622.08 ha area. Pincode of Alagappasamudram is 600073.