Columbia, Rock Hill, and Sumter anchor the 803 area code, covering South Carolina's Midlands region across 21 counties. It's been in service since January 1, 1947, one of the original 86 area codes assigned when the North American Numbering Plan launched — though its footprint has shrunk twice since, giving up territory to 864 in 1995 and 843 in 1998.
In 2020, an all-services overlay, 839, joined the same Midlands footprint as growth pushed the region toward number exhaustion.
This guide covers 803's counties and cities, where its boundaries stop, the three-stage history that shaped today's territory, what's fueling ongoing demand, and how much room is left in the numbering pool.
Counties and cities at a glance
| City | County | Region |
|---|---|---|
| Columbia | Richland | Central Midlands |
| Rock Hill | York | Northeast Midlands |
| Sumter | Sumter | East Midlands |
| Aiken | Aiken | Southwest Midlands |
| Camden | Kershaw | North-central |
| Orangeburg | Orangeburg | South-central |
What 803 does NOT cover
What 803 does NOT cover:
- Upstate SC — Greenville, Spartanburg, Anderson → 864
- Coastal & Pee Dee SC — Charleston, Myrtle Beach, Florence → 843
- Charlotte metro, just across the NC border → 704 / 980
- Augusta, Georgia, just across the border from Aiken → 706
From a statewide code to a three-stage territory
1947 — 803 launched as one of the original North American area codes, covering the entire state of South Carolina.
1995 — 864 split off the Upstate — Greenville, Spartanburg, and Anderson — narrowing 803's reach for the first time.
1998 — 843 split off the coast and Pee Dee region — Charleston, Myrtle Beach, and Florence — leaving 803 with just the Midlands.
April 25, 2020 — 839 launched as an all-services overlay on the same Midlands territory the South Carolina Public Service Commission approved back in 2018, after Columbia-area growth pushed 803 toward exhaustion. Existing 803 numbers stayed unchanged; new lines could be assigned either code from that date on.
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What's driving demand across the Midlands
Central South Carolina's economy runs on a mix of public institutions and steady population growth:
Fort Jackson The U.S. Army's largest basic training installation sits just outside Columbia, adding a steady stream of military and civilian staff lines.
State government As South Carolina's capital, Columbia hosts a large concentration of state agencies and related offices.
University of South Carolina The flagship campus in Columbia drives student, faculty, and staff phone demand every academic year.
Many of these Midlands businesses are moving their phone systems onto UCaaS (Unified Communications as a Service) — one cloud platform for calling, video, and messaging that scales cleanly as a company opens new offices across the region, the same pattern behind newer overlays like 801 in Utah. Contact us to set up an 803 or 839 number for your South Carolina business.
Number availability across 803/839
Before the overlay, state regulators projected the standalone 803 pool would run out of new number blocks by late 2020 — a direct result of Columbia-metro growth outpacing the supply of unassigned prefixes. The 839 overlay reset that clock by opening an entirely new set of prefixes across the same footprint, and the combined 803/839 pool now has considerably more headroom than 803 alone ever did.
Time zone & how to dial an 803 number
The Midlands run on Eastern Time (ET) — EST (UTC −5) in winter, EDT (UTC −4) during Daylight Saving Time. Since the 839 overlay activated, all local calls within the 803/839 region require ten digits: dial 1, then the area code, then the seven-digit number.
Key takeaways
- 803 covers South Carolina's Midlands — Columbia, Rock Hill, and Sumter — in service since 1947.
- Its footprint narrowed twice: 864 split off in 1995, 843 split off in 1998.
- The 839 overlay joined the same territory on April 25, 2020, after regulators projected 803 would run out of numbers.
- Anchors include Fort Jackson, state government, and the University of South Carolina.
- Time zone: Eastern (ET), with mandatory 10-digit dialing.
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Frequently asked questions
What is the 803 area code?
It covers South Carolina's Midlands region, including Columbia, Rock Hill, and Sumter, and has been active since 1947.
Where is the 803 area code located?
Central South Carolina — 21 counties in the Midlands, excluding the Upstate (864) and coastal Pee Dee region (843).
Is 803 a Florida area code?
No. It has never been assigned to Florida — this is strictly a South Carolina code.
What state is the 803 area code in?
South Carolina — specifically the Midlands, anchored by the capital, Columbia.
What time zone is the 803 area code?
Eastern Time Zone (ET) — EST (UTC −5) in winter and EDT (UTC −4) during Daylight Saving Time.
Why does the Midlands have two area codes, 803 and 839?
839 was added in 2020 as an overlay after regulators projected 803 would exhaust its number supply; both codes now serve identical territory.
How do I get an 803 area code number?
Sign up with a VoIP provider such as My Country Mobile, search for available numbers in either code, choose a Midlands prefix, select a plan, and activate.
