California's San Mateo is a city located in the San Francisco Bay Area. It is the county seat of San Mateo County and is the fourth most populous city in the county. The city is home to many tech companies, including Oracle, Sony, and Electronic Arts. San Mateo is also known for its diverse population, with over half of its residents being foreign-born. The city is a popular tourist destination, offering a variety of attractions such as the San Mateo Japanese Garden, Coyote Point Recreation Area, and the San Mateo County History Museum.