California (pronounced [ˌkæ.lɪ.ˈfɔɹ.njə]) is the most populous state of the United States. Located on the Pacific coast of North America, it is bordered by Oregon, Nevada and Arizona in the United States, and Baja California in Mexico. The state's four largest cities are Los Angeles, San Diego, San Jose and San Francisco. California is known for its Mediterranean climate and ethnically diverse population. The state has 58 counties.