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Herculaneum

City in Missouri
Herculaneum is a city in Jefferson County, Missouri, and is a suburb of St. Louis. The population was 4,273 at the 2020 United States Census. The City of Herculaneum was the first county seat of Jefferson County from January 1, 1819, to 1839. The... Wikipedia
ZIP code: 63048
Population: 4,912 (2021)
Area code: 636
Elevation: 440 ft (130 m)
Incorporated: July 27, 1819 (April 1972)