Trona is an unincorporated community in San Bernardino County, California, United States, within the census-designated place of Searles Valley. Trona is at the western edge of Searles Lake, a dry lakebed at the bottom of in Searles Valley, southwest of Death Valley. The town takes its name from the mineral trona, abundant in the lake. It is about 170 miles (274 km) northeast of Los Angeles, on State Route 178. The ZIP code is 93562. Trona is known for its isolation and desolation. as well as the nearby Trona Pinnacles. The local school plays on a dirt football field because the searing heat and highly saline soil kills grass. At one point it boasted an 18 hole golf course that was all sand except for the greens.