St. Louis is the second-largest city in Missouri, United States. It sits near the confluence of the Mississippi and the Missouri Rivers, on the western bank of the latter. As of 2019, the city proper had an estimated population of around 300,000, while the bi-state metropolitan area, which extends into Illinois, had an estimated population of over 2.8 million, making it the largest metropolitan area in Missouri, the second-largest in Illinois, the seventh-largest in the Great Lakes Megalopolis, and the 22nd-largest in the United States.
