Boonville is a city in Boon Township, Warrick County, Indiana, United States. The population was 6,246 at the 2010 census. The city is the …Boonville is a city in Boon Township, Warrick County, Indiana, United States. The population was 6,246 at the 2010 census. The city is the largest community in and the county seat of Warrick County. Boonville was founded in 1818 and named for Jesse Boon, father of Ratliff Boon. A post office has been in operation at Boonville since 1820. Boonville was incorporated in 1858.
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