The Diablo Range is largely unpopulated outside of the San Francisco Bay Area. Major nearby communities include Antioch, Concord, Walnut Creek, San Ramon, Pleasanton, Livermore, Fremont, Milpitas, San Jose, Morgan Hill, and Gilroy and the Central Valley city of Tracy. South of Pacheco Pass, the only major nearby communities (those with a population over 15,000) are Los Banos, and Hollister. The small town of Coalinga may also be notable for its location on State Route 198, one of the few routes through the mountains. Also the town of Kettleman City is also on State Route 41, another route that crosses the mountains. There are 8 trans-Diablo routes that connect the Central Valley to the coast (4 of them to the Bay Area).