Siddamalli is a village in Mayiladuthurai tehsil in district of Nagapattinam, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Siddamalli was 2,289 which includes 1,121 males and 1,168 females. Siddamalli covers 608 ha area. Pincode of Siddamalli is 609205.