864 Area Code: Greenville, South Carolina

The 864 area code covers the Upstate region of South Carolina, with Greenville as the primary city. Greenville sits in the foothills of the Blue Ridge in northwestern South Carolina, organized around a downtown that has reshaped itself substantially over the past three decades alongside a substantial concentration of advanced manufacturing — BMW's only US assembly plant sits in the surrounding Upstate, and Michelin's North American headquarters is in the city itself. The 864 footprint extends through Spartanburg, Anderson, the surrounding upstate counties, and the small communities along the foothills of the southern Appalachians.

In records the directory has compiled for 864 numbers, other South Carolina cities — Charleston and Columbia — recur frequently. Neither is inside the 864 footprint. The pattern reflects standard public-record dynamics, with phone numbers porting across South Carolina and addresses linked across multiple cities. The directory currently documents 568 distinct prefixes within 864 in detail, a working subset of the prefix population the code carries.

Greenville's median household income runs below the US figure, but the broader Upstate region's working economy supports a higher overall profile when the surrounding counties are taken into account. Home values come in well above the national median in line with broader Sun Belt pricing pressure, the city's median age sits a few years under the US reading, and population places Greenville among the larger cities in the South Carolina Upstate — substantial enough to anchor a regional economy organized around manufacturing, healthcare, and the surrounding foothills.