Benton is a U.S. home rule-class city in Marshall County, Kentucky. The current mayor of this city is Rita Dotson. The population was 4,349 at the 2010 census. It is the county seat of Marshall County.
According to the United States Census Bureau, the city has a total area of 3.9 square miles (10 km2), all land.
Benton was named for Thomas Hart Benton, a senator from Missouri.
In 1908, Benton drove its African American residents out of town, becoming a sundown town along with the rest of Marshall County.
On January 23, 2018, a shooting occurred at Marshall County High School, near Benton, resulting in 19 injuries and 2 fatalities.
As of the 2010 Census, there were 4,349 people, 1,809 households, and 1,154 families residing in the city. The population density was 1,007.4 people per square mile (389.0/km2). There were 2,032 housing units at an average density of 470.7 per square mile (181.73/km2). The racial makeup of the city was 97.4% White (96.4% non-Hispanic), 0.4% African American, 0.1% Native American and Alaska Native, 0.6% Asian, 0.6% from other races, and 0.9% from two or more races. Hispanics or Latinos of any race were 1.8% of the population.
There were 1,809 households, out of which 27.2% had children under the age of 18 living with them, 48.5% were married couples living together, 11.4% had a female householder with no husband present, 3.9% had a male householder with no wife present, and 36.2% were non-families.