Trona is an unincorporated community in San Bernardino County, California. In 2000 it had a population of 2,742.Trona is at the western edge of Searles Lake, a dry lake bed in Searles Valley, southwest of Death Valley.
Starting in the late 1800s mining industry set up around Searles Dry Lake to mine borax. Trona was officially established in 1913, as a self-contained company town, wholly operated by its resident mining company to house employees. Employees were paid in company scrip instead of cash. The mining company also built a library, a scrip-accepting for-profit grocery store, a school, basic housing, and minimal recreation facilities. TheTrona Railway was built in 1913–14 to provide the town with a rail connection to theSouthern Pacific (now the Union Pacific) line at Searles. The railway still operates today.