Chas is a Sub-District (Tehsil/Block/Mandal) in the Bokaro District of Jharkhand. As par Census 2011 information the sub-district code of Chas is 02595. There are about 9 sub-districts in Bokaro and Chas is one of them. Bermo, Chandankiyari, Chandrapura, Gumia, Jaridih, Kasmar, Nawadih, Peterwar etc. are other sub-districts in Bokaro.There are about 125 villages in Chas sub-district, which you can browse from villages list.