Petersburg is a former settlement in Kern County

Kern County, California

Spreading across the southern end of the California Central Valley, Kern County is the fifth-largest county by population in California. Its economy is heavily linked to agriculture and to petroleum extraction, and there is a strong aviation and space presence. Politically, it has generally...

, California

California

California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...

. It was located on Greenhorn Creek 4.5 miles (7.2 km) west-northwest of Miracle Hot Springs

Miracle Hot Springs, California

Miracle Hot Springs is an unincorporated community in Kern County, California...

, at an elevation of 4731 feet (1442 m). Petersburg still appeared on maps as of 1956.

A post office operated at Petersburgh from 1858 to 1863. The place was named for Peter Gardett, early merchant there.