Metro East is a region in southern Illinois that contains eastern and northern suburbs and exurbs of St. Louis, Missouri, United States. It encompasses five Southern Illinois counties (and parts of three others) in the St. Louis Metropolitan Statistical Area. The region's most populated city is Belleville, with 45,000 residents. The Metro East is the second largest urban area in Illinois after the Chicago metropolitan area and, as of the 2000 census, the population of the Metro East statistical area was 599,845 residents, a figure that had risen to above 700,000 in 2010. The significant growth in the Metro East is mainly due to people in smaller outlying towns in Illinois moving to the area for better economic/job opportunities. Geography The Metro East is a loose collection of small and mid-sized cities sitting along the American Bottom and the bluffs of the Mississippi River. According to the U.S. Census Bureau, the five counties of the region have a total area of 6,974 km2 (2,692 mi2). 6,787 km2 (2,620 mi2) of it is land and 186 km2 (71 mi2) of it (2.74%) is water. As of the 2020 census, the most populated cities in the region included the following Demographics As of the 2010 census, there had been a major shift in population from the older rust belt industrial cities in the Mississippi River bottom, such as East St. Louis and Alton, to the more suburban satellite cities, such as, Belleville, Edwardsville, and O'Fallon sitting on the bluffs. This is mainly due to continued white flight. As of the census of 2000, there were 599,845 people, 229,888 households, and 160,260 families residing in the five Metro East counties. The most common language is English, although various other languages are spoken. German speakers exist in southeastern Madison, and Clinton, and southern and eastern St. Clair Counties. Spanish is spoken in the Fairmont City area, and in parts of Clinton County. The largest concentration of African-Americans is in Madison, Venice, western Granite City, East St. Louis, Washington Park, Belleville, Cahokia, Alorton and Alton. Secondary languages tend to be cultural or reminiscent of ancestry, and not related to the general business of the area. List of counties Bond Calhoun Clinton Jersey Madison Monroe St. Clair List of cities, towns, and villages Notes: ^ means part of city in another county/counties Bold indicates county seat Clinton County Jersey County Madison County St. Clair County Colleges