North American Numbers Source-cited · ownership disclosed
Area code
839
In service
United States · since 2020

Columbia (overlay)

An all-service overlay of area code 803, added in 2020 to provide additional numbering capacity for the central Midlands region.

The essentials Numbering data · NumberResearch · as of 2026-09-18
Place
Columbia (overlay)
Type
geographic
Status
in service
In service since
2020
Projected exhaust
2046 Q1

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 839 is

Central South Carolina (Midlands); identical territory to 803, anchored by Columbia..

Communities served wholly or partly by 839:

ColumbiaRock HillAikenSumter

Serves the same geographic area as 803.

B · Relationships

How it relates to other codes

The codes 839 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?

Overlay · 2020 803 Columbia Overlay laid on top of the original 803 Midlands territory.
What's changing. Active overlay of 803 since May 2020.
C · History

How 839 got here

2019
Approved as an all-service overlay by the SC PSC; permissive dialing began October 2019.
Source: Wikipedia
2020-05
Overlay implemented for new central office code assignments; ten-digit dialing mandatory.
Source: Wikipedia
D · Capacity

How full it is

Prefixes assigned
203
Prefixes available
597
Thousands-blocks assigned
1,676

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

Compare 839 with another code →
Sources
Wikipedia ↗
Area code 839
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.