Khammam District (Telugu: ఖమ్మం జిల్లా, Urdu: کھمم ضلع, is a district in Andhra Pradesh, India. It had a population of 2,565,412 of which 19.81% were urban as of 2001 census. Khammam town is the district headquarters. The present name of Khammam is derived from the old name Kammamet. Later it was called Khammam Mettu and subsequently as Khammam. The Godavari River enters Khammam district from Warangal district and flows nearly 250 km across the district.Khammam district is one of the "Coal mining districts of India."The district has the Singareni Colleries head town , Kothagudem which is also called "Coal town of South India."