Sitharkadu 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 Sitharkadu was 4,577 which includes 2,254 males and 2,323 females. Sitharkadu covers 459.41 ha area. Pincode of Sitharkadu is 609003.