 Randolph County is also served by one public owned/public use general aviation airport, Pocahontas Municipal Airport, and six community water systems provide potable water to customers in the county.Randolph County is located where the foothills of the Ozark Mountains intersect the Arkansas Delta (in Arkansas, usually referred to as "the Delta") in the southeast part of the county.Two of the six primary geographic regions of Arkansas, the Ozarks are a mountainous subdivision of the U.S.