Area code 870 is a telephone area code in the North American Numbering Plan (NANP). It is used in the state of Arkansas in the United States. It was established in 1997 as a split from 501. It covers a large portion of eastern and northern Arkansas, such as Jonesboro, Pine Bluff, Texarkana, West Memphis, and the Arkansas Delta region. It was overlaid by 327 on February 20, 2024.