Virudhunagar District is an administrative district of Tamil Nadu state in southern India. Virudhunagar is the district headquarters. Virudhunagar district was formed by the separation of Old Ramanathapuram District on 1987 into Ramanathapuram District, Sivagangai District and the west part as Virudhunagar District. Virudhunagar District was formerly called Karmavirer Kamarajar District. As of 2011, Virudhunagar district had a population of 1,942,288 with a sex-ratio of 1,007 females for every 1,000 males.