Kariakoilvalavu is a village in Attur tehsil in district of Salem, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Kariakoilvalavu was 1,939 which includes 979 males and 960 females. Kariakoilvalavu covers 821.88 ha area. Pincode of Kariakoilvalavu is 636138.