Charleston County, South Carolina has 34 ZIP codes in this list, from 29401 to 29487. They cover 14 places, among them Charleston, North Charleston, Mount Pleasant and Johns Island.
The ZIP code areas of Charleston County add up to about 800 square miles of land (2,071 sq km) as the Census Bureau draws them. The largest is 29458 (Mc Clellanville), with 113 square miles.
Places with more than one code here: Charleston (15 codes), North Charleston (4 codes), Mount Pleasant (3 codes).
Using these codes
In an address, the ZIP code comes last, after the city and the two-letter state: Charleston, SC 29401.
Tap a ZIP code to open it in the look-up, with a copy button for the address line.
A code can cross a county line, and one town can have several codes. The table shows the main place of each code.
"No area" means the Census Bureau draws no area for that code. Such codes are usually for post office boxes or a single building.
Places and counties: GeoNames. Areas: U.S. Census Bureau, 2024 ZIP Code Tabulation Areas. Checked in November 2026. This site is not connected with the United States Postal Service; for mailing, confirm the address with USPS.
ZIP Codes