Coalinga (formerly, Coaling Station, Coalingo and Coalinga Station) is a city in Fresno County, California. The population was 11,668 at the 2000 census and was estimated at 18,061 in 2007. It is the site of both Pleasant Valley State Prison and Coalinga State Hospital. Coalinga is located 52 miles (84 km) southwest of Fresno, at an elevation of 673 feet (205 m).