Tirukostiyur is a village in Tirupathur tehsil in district of Sivaganga, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Tirukostiyur was 2,074 which includes 1,050 males and 1,024 females. Tirukostiyur covers 726.84 ha area. Pincode of Tirukostiyur is 630210.