Alalasundram is a village in Sirkali tehsil in district of Nagapattinam, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Alalasundram was 1,190 which includes 592 males and 598 females. Alalasundram covers 259.42 ha area. Pincode of Alalasundram is 609101.