Fulton County is the westernmost county of the U.S. state of Kentucky, with its western boundary the Mississippi River. As of the 2010 census, the population was 6,813. Its county seat is Hickman. The county was formed in 1845 from Hickman County, Kentucky and named for Robert Fulton, the inventor of steamboat.Fulton County residents were largely pro-Confederate during the American Civil War. Forces from both armies passed through the county during different periods of the conflict.