Port Gibson is a city in Claiborne County, Mississippi, United States. The population was 1,567 at the 2010 census. Port Gibson is the county seat of Claiborne County, which is bordered on the west by the Mississippi River. It is the site of the Claiborne County Courthouse. The first European settlers in Port Gibson were French colonists in 1729; it was part of La Louisiane. It was chartered as a town in 1803 after the United States acquired the territory... Show more

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