Kennett is a city in Dunklin County, Missouri, United States. The population was 11,260 at the 2000 census, but a 2008 estimate indicates a 4.9% decrease in population to 10,707. Kennett is the county seat of Dunklin County. The city is located in the southeast corner (or "Bootheel") of Missouri, 4 miles east of Arkansas and 20 miles from the Mississippi River.
White settlers built log cabins in the area in the first half of the 19th century, naming their settlement Chilletecaux in honor of a Delaware Indian chief who lived there. The town was renamed Butler in the late 1840s, but the city encountered mail delivery problems due to the existence of another Missouri town named Butler and a Missouri county named Butler. It was finally named Kennett in 1851, in honor of the mayor of St. Louis, Luther M. Kennett. The town began to take on its present form in the 1890s with the coming of a railroad to the area and the start of a massive state-funded drainage program in the St. Francis River basin.
Kennett is located at 36°14′17″N 90°3′6″W / 36.23806°N 90.05167°W / 36.23806; -90.05167 (36.237974, -90.051727). According to the United States Census Bureau, the city has a total area of 8.7 square miles (18.2 km²).The entire 18.2 km² (8.7) is land; none of the city is covered by water.