Area codes in Hilton Head Island, South Carolina
Hilton Head Island, South Carolina uses 2 area codes — 843 and 854. The main Hilton Head Island area code is 843.
Area codes serving Hilton Head Island
Phone numbers in Hilton Head Island are written as ten digits — for example (843) 555-0190 — and fall in the Eastern Time zone.
How Hilton Head Island came to have 2 area codes
The original Hilton Head Island area code is 843, in service since 1998. As the area ran low on available numbers, an overlay code was added over the same region for new phone lines: 854 (2015). Existing numbers kept their original code — an overlay never forces anyone to change their number — which is why Hilton Head Island now uses all 2 codes and every local call is dialed with ten digits.
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Frequently asked questions
What is the area code for Hilton Head Island?
The main area code for Hilton Head Island, South Carolina is 843. Hilton Head Island is now served by 2 area codes in total: 843, 854.
How many area codes does Hilton Head Island have?
Hilton Head Island has 2 area codes: 843, 854.
Why does Hilton Head Island have more than one area code?
As Hilton Head Island used up the numbers available in its original area code (843, in service since 1998), additional "overlay" codes were added over the same area so new phone numbers could keep being assigned.
How do you dial a Hilton Head Island number?
Dial all 10 digits — the area code (843 or 854) 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.