Greater St. Louis
The Greater St. Louis Metropolitan Area surrounds the city of St. Louis, Missouri. St. Louis is the main city and commercial center for the area. It also includes the St. Louis, MO-IL metropolitan statistical area (MSA) and the St. Louis–St. Charles–Farmington, MO–IL combined statistical area (CSA). The MSA area is the 21st-largest, as of 2020.
In the St. Louis, MO-IL metropolitan statistical area (MSA), it includes the Illinois counties (Bond, Calhoun, Clinton, Jersey, Macoupin, Madison, Monroe, and St. Clair (known collectively as the Metro East)) and the Missouri counties (Crawford (only the City of Sullivan), Franklin, Jefferson, Lincoln, St. Charles, St. Louis (separate from and not inclusive of the city of St. Louis), and Warren).