- Kennett City is a small city located in Southeast Missouri, United States. It is the county seat of Dunklin County and has a population of around 10,000 people. The city is known for its rich agricultural heritage, with cotton and soybeans being major crops in the area. It is also home to several manufacturing and distribution facilities. Kennett City offers various recreational opportunities, including parks, golf courses, and fishing spots. The city has a strong community spirit, with annual events and festivals bringing residents together.