843 Area Code: The Number Behind South Carolina's Coast

Introduction

The 843 area code covers South Carolina's entire coastline, from Charleston's historic harbor to Myrtle Beach's tourist strip and down to Hilton Head Island. It matters right now because this stretch of coast is one of the fastest-growing regions in the state, and a local number still signals real roots to customers who have plenty of out-of-state numbers to compare it against. This guide covers where 843 reaches, how it split off from a much older code, what the 854 overlay means for new lines, and how a business claims a number here today. Keep reading, because the overlay changes how new numbers get assigned, and that detail trips up a lot of businesses moving to the Lowcountry.

Key Takeaways:

• The 843 area code covers Charleston, Myrtle Beach, Hilton Head, and the rest of coastal South Carolina.
• It split off from area code 803 on March 22, 1998, as the state's population outgrew a single prefix.
• The 854 overlay entered service on October 19, 2015, adding capacity without changing existing 843 numbers.
• Tourism, the Port of Charleston, and coastal relocation keep demand for new local lines high year-round.

Charleston to Hilton Head: Where the 843 Area Code Reaches

The 843 area code covers virtually the entire South Carolina coast, stretching from the North Carolina border near Myrtle Beach down to the Georgia line near Hilton Head Island. It reaches inland far enough to cover Florence and parts of the Pee Dee region, giving it one of the largest geographic footprints of any coastal code in the country. Businesses expanding further inland toward Columbia should also look at the 803 area code guide, since that market runs on a very different growth pattern.

• Charleston — the anchor city, home to the Port of Charleston and a fast-growing tech and tourism economy
• Myrtle Beach — the state's top tourist destination, with hundreds of hotels and vacation rentals
• Hilton Head Island — a resort and retirement hub with a large seasonal population swing
• Florence — an inland hub city serving the Pee Dee region's healthcare and logistics sectors
• Beaufort — a historic coastal city and home to Marine Corps Air Station Beaufort

From 803 to 843: The 1998 Split That Created This Code

1. Before 1998 — a single area code, 803, covered the entire state of South Carolina.
2. March 22, 1998 — regulators split off the 843 area code to serve the coastal and eastern portion of the state, while 803 stayed with the Midlands and Columbia.
3. October 19, 2015 — the 854 overlay entered service across the same 843 territory to add more available numbers.

This was a geographic split, not an overlay, so every existing coastal number simply became an 843 number overnight, with no changes needed for callers already using the region.

Same Numbers, One New Overlay: What 854 Changed in 2015

Most guides mention the 854 overlay only in passing. What actually matters for a business here is that 854 changed nothing about existing 843 lines. It was added purely to expand the pool of available numbers once the region's growth started outpacing supply.

• Existing 843 numbers kept their prefix permanently when 854 launched
• New numbers assigned after October 2015 could come from either 843 or 854
• The South Carolina Public Service Commission approved the overlay plan back in December 2013
• Ten-digit dialing became mandatory across the combined 843/854 territory on September 18, 2015
• 854 was South Carolina's first all-service overlay, meaning it applies to landlines, mobiles, and VoIP alike

Businesses that already had an 843 number never had to reprint a business card or update a website footer because of this change.

Tourism, the Port, and Retirees: Why Coastal Carolina Keeps Growing

Generic area code guides mention tourism and stop there. The real driver behind steady demand for 843 area code numbers is a mix of industries that rarely overlap this cleanly in one region.

The Port of Charleston's Freight Economy

The Port of Charleston is one of the busiest container ports on the East Coast, anchoring a logistics, warehousing, and manufacturing supply chain that stretches across the Lowcountry. Freight brokers, trucking companies, and manufacturers serving the port routinely need a Charleston-area phone presence.

Myrtle Beach's Year-Round Tourism Machine

Myrtle Beach draws millions of visitors annually, supporting a constant churn of hospitality, real estate, and vacation rental businesses that all depend on a local number to build trust with out-of-town guests booking ahead of a trip.

Hilton Head and the Coastal Retirement Boom

Hilton Head and the surrounding coastal counties keep attracting retirees and remote workers relocating from colder states, which drives ongoing demand for local service providers, from healthcare practices to home contractors, all needing a number that reads as local from day one.

Ten Digits, Every Call: Dialing Rules for 843 and 854

Every number in the 843 area code runs on Eastern Time, observing Daylight Saving Time the same way as the rest of the East Coast. Because 843 shares its territory with the 854 overlay, callers cannot rely on seven-digit dialing habits from decades ago.

• Local calls require the full 10-digit format: 843-XXX-XXXX
• International callers dial +1-843-XXX-XXXX
• Ten-digit dialing became mandatory here on September 18, 2015
• Central Time contacts sit one hour behind Charleston for most of the year
• West Coast contacts sit three hours behind, so late mornings and early afternoons work best for outreach

Anyone saving an area code 843 contact should store the full 10-digit number, since a coastal neighbor could just as easily be dialing from an 854 number today.

Is That 843 Call Real? What Coastal Residents Are Reporting

The 843 area code is legitimate and assigned to real South Carolina coastal numbers, but scammers spoof it just like any other growing prefix. Fraud reports along the coast tend to cluster around a handful of repeat schemes.

• Fake timeshare and vacation rental scams targeting Myrtle Beach visitors
• Bogus utility disconnection threats timed around bill due dates
• Robocalls pitching auto warranties to numbers that never registered a vehicle in the state
• One-ring missed calls designed to bait an expensive international callback

Under FCC guidelines, carriers must authenticate outbound caller ID through STIR/SHAKEN, so a legitimate local number still carries real weight even as spoofing attempts continue. Providers such as Rozper apply this authentication automatically, which matters for any business that cannot afford to look like a spoofed call to a new client.

843 vs. 854 vs. 803: Picking the Right South Carolina Code

• 843 — the coast, covering Charleston, Myrtle Beach, Hilton Head, and the Pee Dee region
• 854 — the overlay sharing the same coastal footprint as 843, assigned to newer numbers
• 803 — the Midlands and Columbia, an entirely separate market inland
• Ten-digit dialing — required across both 843 and 854, so neither code behaves like a standalone shorthand anymore

Picking the wrong code is an easy mistake for firms opening a satellite office near Columbia instead of the coast, since an inland number tells Charleston or Myrtle Beach customers nothing about local roots. For any business courting tourism, port logistics, or coastal retirees, an 843 area code south carolina number reads as native to the exact market that matters most.

Getting a Local 843 Number: Five Steps

1. Pick a provider with live 843 inventory and STIR/SHAKEN compliance built in, since not every carrier still has open blocks in the busiest coastal exchanges.
2. Choose a number format that fits your brand, standard or vanity.
3. Set up call routing to mobile phones, softphones, or a shared team queue so no client call ever goes unanswered.
4. Turn on business SMS for booking confirmations and customer updates.
5. Port an existing number if you already have one, with no service gap.

Most providers activate a new line in under fifteen minutes, and Rozper backs its numbers with 99.999% uptime and coverage across 150+ countries, which suits hospitality and logistics teams coordinating with guests and freight partners well beyond South Carolina. Locking in a number through an 843 area code south carolina provider now means a business sounds like a coastal neighbor before the first call even connects.

Conclusion

The 843 area code has covered South Carolina's coast since it split off from 803 on March 22, 1998, and it still stretches from Myrtle Beach to Hilton Head today. The 854 overlay, added in 2015, expanded the number supply without touching a single existing 843 line, so both codes now share the same territory under mandatory 10-digit dialing. Understanding that split-then-overlay history helps any business claim the 843 identity with confidence, whether the number is brand new or years old.

Coastal South Carolina keeps adding jobs and phone lines every quarter, driven by the Port of Charleston, Myrtle Beach's tourism economy, and a steady wave of coastal relocation. Rozper makes claiming a Charleston-area number quick, with setup measured in minutes rather than weeks. A local line signals real roots in a market that rewards exactly that kind of presence. Get your 843 number activated now, before the next busy season fills your calendar.