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Belleville

City in Illinois
Belleville is a city and the county seat of St. Clair County, Illinois, United States. The population was 42,404 at the 2020 census, making it the most populated city in the Metro East region of Greater St. Louis, and in all of Southern Illinois. Wikipedia
ZIP code(s): 62220-62223, 62225, 62226
Population: 41,295 (2022)
Area code: 618
Founded: 1814