Lewisport is a home rule-class city in the floodplain of the Ohio River in Hancock County, Kentucky, in the United States. The population wa…Lewisport is a home rule-class city in the floodplain of the Ohio River in Hancock County, Kentucky, in the United States. The population was 1,670 at the 2010 census, and is also the most populous community in the county. It is included in the Owensboro metropolitan area.