Hanson is a city in Hopkins County, Kentucky, United States. The population was 625 at the 2000 census. It is named for Henry B. Hanson, a civil engineer and surveyor who plotted the town for the Henderson and Nashville Railroad. CSX Transportation runs through Hanson and operates a siding track there named after the town. The companies that supply power to Hanson residents are Kentucky Utilities and Kenergy. The Hanson Historic District is located in the city.