Prairie County was formed November 25, 1846. The first county seat was Brownsville, now a part of Lonoke County. In 1873, the county seat was moved to DeValls Bluff and in 1875 to Des Arc. Today, Prairie County has two county seats, one in Des Arc and one in DeValls Bluff.
The county was named after the Grand Prairie because of the large open countryside. Located in east-central Arkansas, the county is long and narrow, measuring about 50 miles in length and 24 miles in width. Prairie County includes incorporated towns like Des Arc, Hazen, DeValls Bluff, Biscoe, and Ulm.
Rice is the chief crop grown here, but farmers raise soybeans and wheat as well. There are two large cooperative grain storage and drying facilities, three wholesale seed plants and seven bulk fertilizer plants located in Prairie County.
Our county is noted for hunting, fishing and water sports, and there are approximately 17,000 acres in Prairie County managed by the Arkansas Game and Fish Commission. Natural attractions like the White River and Lake Des Arc attract many visitors who enjoy leisure and recreation.