Area code 865

Area code 865 is a telephone area code in the North American Numbering Plan (NANP) serving Knoxville, Tennessee, and the nine surrounding counties (Anderson, Blount, Grainger, Jefferson, Knox, Loudon, Roane, Sevier, and Union) in central East Tennessee. The area incorporates most of the region defined as the Knoxville-Sevierville-La Follette Combined Statistical Area.

Cities in the numbering plan area include Knoxville, Alcoa, Bean Station, Clinton, Gatlinburg, Harriman, Jefferson City, Kingston, Lenoir City, Maryville, Maynardville, Norris, Oak Ridge, Pigeon Forge, Plainview, Rockwood, Rutledge, Sevierville and Townsend.