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 (now CSX Transportation). 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.
Hanson is located at 37°25′4″N 87°28′50″W / 37.41778°N 87.48056°W / 37.41778; -87.48056 (37.417794, -87.480647).
According to the United States Census Bureau, the city has a total area of 2.4 square miles (6.1 km²), all of it land.