Sannavanam is a village in Karaikkudi tehsil in district of Sivaganga, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Sannavanam was 2,629 which includes 1,323 males and 1,306 females. Sannavanam covers 1536.13 ha area. Pincode of Sannavanam is 630306.