Coalinga ( or ) is a city in the Pleasant Valley in Fresno County and the western San Joaquin Valley, in central California about 80 miles sout…Coalinga ( or ) is a city in the Pleasant Valley in Fresno County and the western San Joaquin Valley, in central California about 80 miles southeast of Salinas. It was formerly known as Coaling Station A, Coalingo, and Coalinga Station.