DeWitt is the second largest city in Arkansas County, Arkansas, United States, which also serves as the county seat of the southern district of Arkansas County. Population was 3,292 at the time of the 2010 census. The city is located on the Arkansas Grand Prairie, known for rice farming and duck hunting. DeWitt is home to the DeWitt School District and the DeWitt Municipal Airport.

Arkansas County is a county located in the U.S. state of Arkansas. As of the 2020 census, the population was 17,149. Located in the Arkansas Delta, the county has two county seats, DeWitt and Stuttgart.