 Chas is situated on the banks of Garga river and Dhanbad-Bokaro-Ranchi Expressway passes through it.As per 2011 Census of India, Chas Nagar Parishad had a total population of 141,640, of which 74,720 were males and 66,913 females.Scheduled Castes numbered 6,507 and Scheduled Tribes numbered 796.