Kothamangalam 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 Kothamangalam was 3,551 which includes 1,775 males and 1,776 females. Kothamangalam covers 1224.99 ha area. Pincode of Kothamangalam is 630105.