Kochas is a town and corresponding community development block in Rohtas district of Bihar state, India. It is located at an elevation of 69 m above MSL. National Highway 319 passes through Kochas. The nearest airport is Varanasi Airport. The most famous cultural event of Kochas is Krishn Lila unfortunately it is known and famous as "Kans Lila". Beside Krishn Lila other famous cultural activities are Chhath Puja, Durga Puja and other religious functions.