Southern California

Southern California (SoCal) is a megaregion, or megapolitan area, in the southern area of the U.S. state of California. Large urban areas include Greater Los Angeles and Greater San Diego. The urban area stretches along the coast from Ventura through the Southland and Inland Empire to San Diego. The United States - Mexico border makes up the southern border. Southern California is a major economic center for the state of California and the nation.

Southern California's population encompasses eight metropolitan, or MSA, areas: Los Angeles County and Orange County together make up the Los Angeles metropolitan area; the Inland Empire consists of Riverside and San Bernardino Counties; the San Diego metropolitan area; the Bakersfield metropolitan area; the Oxnard-Thousand Oaks-Ventura metro area; the Santa Barbara metro area; the San Luis Obispo metropolitan area; and the El Centro area. Out of these, three are heavy populated areas; the Los Angeles area with over 12 million inhabitants, the Riverside-San Bernardino area with over 4 million inhabitants, and the San Diego area with over 3 million inhabitants. For CSA metropolitan purposes, the five counties of Los Angeles, Orange, Riverside, San Bernardino, and Ventura are all combined to make up the Los Angeles metropolitan area; with San Diego as Southern California's other CSA metropolitan area. With over 22 million people, roughly 60% of California's population resides in Southern California.

To the east of Southern California are the Colorado Desert and the Colorado River at the border with the state of Arizona, and the Mojave Desert at the border with the state of Nevada. To the south lies the international border with Mexico, and to the west lies the Pacific Ocean. With combined surface area of 56,512 sq mi, Southern California alone is bigger than England.