The Bay Area as a whole may be one of the most densely populated places in California, but no city in the region has passed the 1 million residents mark … yet. According to the latest census results, San Jose is still the third largest city in the state and the 10th most populous city in the country. It is also the only one of the top 10 cities with a population of under 1 million. Based on current trends, it may take till 2021 to get there.