Prairie County was formed on November 25,1846, and was named for its most obvious physical characteristics. The county lies on a spread of level land between the lower White and Arkansas rivers that is known at the Grand Prairie as early at 1819. The landscape is rich, flat, delta farmland, with rolling hills in the extreme northwest corner. The county has dual seats, Des Arc and DeValls Bluff. The economic base of the county is agriculture, cotton and rice, soybeans, wheat, and catfish, along with agriculture-related commerce and some industry. The scenic White River makes its way through the county, past both County Seats, on its way to the Mississippi River. In the north of the county are Cypress and Des Arc Bayous, Lake Des Arc, Spring and Horn Lakes and part of the Cache River and to the south, LA Grue Bayou and Peckerwood Lake which covers 4,000 acres. As of the 2010 census, Prairie County had a population of 8,715 residents.