Gatesville is a city in and the county seat of Coryell County, Texas, United States. The population was 15,751 at the 2010 census. The city has five of the eight prisons and state jails for women operated by the Texas Department of Criminal Justice. One of the facilities, the Mountain View Unit, has the state's death row for women.Gatesville is part of the Killeen?Temple?Fort Hood Metropolitan Statistical Area.