South Carolina business phone guide

South Carolina's business economy

South Carolina had 5.5 million residents in the Census Bureau's July 2024 estimate, up 7.0% from April 2020. The U.S. population grew 2.6% over the same period. County Business Patterns counted 122,958 business establishments in the state in 2023 with 2,067,143 mid-March employees and $109.5 billion in annual payroll. The average establishment has 16.8 employees. 53.6% of establishments with employees had fewer than five people. The three largest sectors by establishments are retail trade (18,647), other services (except public administration) (12,908), and health care and social assistance (12,694).

South Carolina compared with the U.S.

South Carolina has 22.4 business establishments per 1,000 residents, 8.7% below the U.S. figure of 24.6. Establishments average 16.8 employees against 16.7 nationally, and payroll per employee is $52,961 (22.5% below the U.S. $68,342). 53.6% of establishments with employees have fewer than five people (U.S.: 55.5%), while 5.3% have 50 or more. Averages are pulled up by large employers; the size table is the better guide to what a typical business here looks like.

Phone numbers and carriers in South Carolina

NANPA lists 6 geographic area codes in service in South Carolina, with 2,765 central office codes assigned across 241 rate centers and held by 86 carriers. 803 has the most assigned codes (784). 6 of them are part of overlays. The newest in service is 821, since August 19, 2024.

Small-business industries in South Carolina

Among the 141 phone-heavy small-business industries these guides cover, the largest in South Carolina by establishment count are full-service restaurants (4,583), limited-service restaurants (4,227), and offices of real estate agents and brokers (3,337). Follow an industry for its metro-level counts and what a phone system costs a typical team.

Metro and micropolitan areas

16 Census metro or micropolitan areas include part of South Carolina. The largest is Charlotte, NC-SC with 2.9 million residents.

Picking a local number in South Carolina

Every South Carolina area code requires ten-digit dialing for local calls, according to NANPA's dialing-plan data, so customers always see and dial the full number. In overlays (803/839, 821/864, and 843/854), the codes share one territory, so a new number may come from any code in the overlay. The city pages show which codes dominate each place, which is the best guide to the number your customers will recognize.

Largest South Carolina cities for local numbers

118 South Carolina cities and towns have their own local-number page. The most populous are Charleston (843/854), Columbia (803/839), Mount Pleasant (843/854), and Rock Hill (803/839).

What phone service costs a South Carolina business

Per-seat phone plans multiply by headcount. For the rounded average establishment size in South Carolina, 17 users on RingCentral RingEX Core come to $510.00 a month and on Ooma Office Pro $424.15, at month-to-month list prices checked September 28, 2026. Callata comes to $339.00 a month for 17 users ($99 a month with 5 users included, then $20 per additional user), below both.

Callata in South Carolina

Callata Office costs $99 per month for up to 5 people, and each additional user is $20 a month. That covers up to 3 local numbers, calling from a browser or your cell, transcribed voicemail, recorded calls with AI summaries, after-hours routing and E911 on each number.

Porting a number you already use in South Carolina is free, and business texting is available once the carrier registration (10DLC) is approved; the registration carries a one-time $49 fee. Which specific numbers are open in a given area code depends on carrier inventory at the time you sign up.

AI agents are optional: an AI receptionist or scheduler can pick up when the team is busy or closed, take a message, send a text or email, or transfer the call. They draw on prepaid AI minutes ($0.25/minute), disclose that they are AI, and outbound AI calls require prior consent and are limited to 8am–9pm.