What is what area code is 864?

Area code 864 is a telephone area code in the North American Numbering Plan (NANP) for the upstate area of South Carolina. This area includes cities such as Greenville, Spartanburg, Anderson, and Greenwood. The area code was established on March 22, 1995, as a split from area code 803 to accommodate the increasing demand for telephone numbers in the region. Today, area code 864 serves a population of over 1 million people and covers an area of approximately 6,581 square miles.