Ja Sithamur is a village in Tirukkoyilur tehsil in district of Viluppuram, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Ja Sithamur was 1,977 which includes 1,020 males and 957 females. Ja Sithamur covers 323.87 ha area. Pincode of Ja Sithamur is 605757.