Bakersfield is a city in Kern County, California, United States. It is the county seat and largest city of Kern County. The city covers about 151 sq mi near the southern end of the San Joaquin Valley and the Central Valley region. Bakersfield's population as of the last official United States Census in 2010 is 347,483 making it the 53rd-most populous city in the United States of America and the 9th-most populous city in California. The Bakersfield–Delano Metropolitan Statistical Area, which includes all of Kern County, had a 2010 census population of 839,631, making it the 62nd-largest metropolitan area in the United States. The more built-up portion of the metro area that includes Bakersfield and areas immediately around the city, such as East Bakersfield, Oildale and Rosedale, has a population of 523,994.
Bakersfield is a significant hub for both agriculture and energy production. Kern County is the most productive oil-producing county in California and the fourth-most productive agricultural county in the United States.