Santa Clara County, California is the most recently founded county in Northern California.
 The county seat and largest city is San Jose; with about 1,000,000 residents, it is the 10th-most populous city in the United States, California's third-most populous city and the most populous city in the San Francisco Bay Area
 For over a century (19002020), California experienced an explosion in population growth, adding an average of more than 300,000 people per year

