Area codes in Sumter, South Carolina
Sumter, South Carolina uses 2 area codes — 803 and 839. The main Sumter area code is 803.
Area codes serving Sumter
Phone numbers in Sumter are written as ten digits — for example (803) 555-0190 — and fall in the Eastern Time zone.
How Sumter came to have 2 area codes
The original Sumter area code is 803, in service since 1947. As the area ran low on available numbers, an overlay code was added over the same region for new phone lines: 839 (2020). Existing numbers kept their original code — an overlay never forces anyone to change their number — which is why Sumter now uses all 2 codes and every local call is dialed with ten digits.
All South Carolina area codes · Is a Sumter call a scam?
Nearby cities
- Columbia area codes
- Summerville area codes
- Charleston area codes
- Monroe area codes
- Rock Hill area codes
- Mount Pleasant area codes
- Aiken area codes
- Charlotte area codes
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Frequently asked questions
What is the area code for Sumter?
The main area code for Sumter, South Carolina is 803. Sumter is now served by 2 area codes in total: 803, 839.
How many area codes does Sumter have?
Sumter has 2 area codes: 803, 839.
Why does Sumter have more than one area code?
As Sumter used up the numbers available in its original area code (803, in service since 1947), additional "overlay" codes were added over the same area so new phone numbers could keep being assigned.
How do you dial a Sumter number?
Dial all 10 digits — the area code (803 or 839) followed by the 7-digit local number. From abroad, dial +1, then the area code and number.
Sourced from the official NANPA (North American Numbering Plan Administrator) numbering database, current as of August 2, 2026. Refreshed monthly.