California is the most populous state in the United States with over 39.5 million people. Located in the West Coast region of the United States, it is the third-largest state by area and is bordered by Oregon to the north, Nevada to the east, Arizona to the southeast, and the Mexican state of Baja California to the south. It is home to many major cities including San Diego, Los Angeles, and San Francisco, as well as world-famous attractions like Yosemite National Park, the Hollywood Sign, and Lake Tahoe. California has a diverse range of climates, from the Mediterranean climate of the coastal region to the rugged Sierra Nevada mountains and deserts in the south. California is one of the most diverse states in the US, with a large mix of cultures, languages, and religions making up the unique population.