North American Numbers Source-cited · ownership disclosed
Area code
864
In service
United States · since 1995

Greenville

Created in a 1995 split of area code 803, 864 serves the western third of South Carolina (the Upstate), anchored by Greenville and Spartanburg. It is overlaid by 821.

The essentials Numbering data · NumberResearch · as of 2026-09-18
Place
Greenville
Type
geographic
Status
in service
In service since
1995
Projected exhaust
2054 Q3

Status, dates and counts are read from NumberResearch (NANPA / CNAC / FCC records). Assignment records show initial assignees, not the carrier serving a number today.

A · Where it is

Where 864 is

Western third of South Carolina (Upstate); roughly twelve counties including Greenville, Spartanburg, Anderson and Pickens..

Communities served wholly or partly by 864:

GreenvilleSpartanburgAndersonClemsonGreerMauldinGaffney
B · Relationships

How it relates to other codes

The codes 864 was split from, spawned, or shares its area with. A split divides the map and changes some numbers; an overlay shares the same ground and changes none — what's the difference?

Split from · 1995 803 Columbia 864 split off from 803, which had been South Carolina's sole area code for 48 years.
Overlay · 2024 821 Greenville (overlay) All-service overlay covering the same Upstate territory.
What's changing. Overlaid by 821 (2024); ten-digit dialing mandatory. Re-check NANPA.
C · History

How 864 got here

1995-12-03
Established via a split of the original 803 area code.
Source: Wikipedia
2024-08-19
Overlay 821 in-service date.
Source: Wikipedia
D · Capacity

How full it is

Prefixes assigned
800
Prefixes available
0
Thousands-blocks assigned
3,957

Prefix-assignment counts describe allocation to carriers, not how many individual numbers are in use. Full technical records: NumberResearch ↗.

Compare 864 with another code →
Sources
Wikipedia ↗
Area code 864
NumberResearch.org ↗
Live status, dates, assignment counts and exhaust forecast — data as of 2026-09-18 (CC BY 4.0).

Place, relationships and history above are compiled by North American Numbers from the sources listed and last checked 2026-09-18. A check date is not an expert review — see how this is made. Flag an error.