Bakersfield is a large city at the southern end of the Central Valley of California, United States. It is one of the fastest-growing large-population cities in the USA, and is located roughly equidistant between Los Angeles and Fresno, 110 miles to the south and north respectively. As of 2007, the population was estimated at 323,213 within the city limits, making it the 11th largest city in California and the 58th largest city in the United States according to U.S. Census estimates. The Bakersfield Metropolitan Statistical Area (MSA) has a population of 780,711, making it the 65th largest metropolitan area in the country. It is California's third largest inland city, after Fresno and Sacramento. The city's economy relies on agriculture, petroleum extraction and refining, and manufacturing. Bakersfield is also the 11th fastest growing city in the United States with a population of over 100,000, and the fastest growing city in the United States with a population of over 250,000.