Then Harirajapuram is a village in Chidambaram tehsil in district of Cuddalore, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Then Harirajapuram was 771 which includes 379 males and 392 females. Then Harirajapuram covers 356.71 ha area. Pincode of Then Harirajapuram is 608602.