Yermo is a town in San Bernardino County, California. Its name is derived from the Spanish word for wilderness. It is located 13 miles east of Barstow in the Mojave Desert on Interstate 15, just south of the Calico Mountains. The town has a population of 1,500-2,000 (2009). Yermo hosts the 1859 acre (7.5 Square kilometer) storage and industrial annex of the Marine Corps Logistics Base Barstow.